Setup and catalitic converter question???

SS_Firehawk · 05-28-2013, 12:48 AM

Quote:

Originally Posted by DEpointfive0

^^OP, please don't argue with SS_Firehawk, he fights for your freedom and is currently sitting in god damn Afganistan...
He wins

Quote:

Originally Posted by chrischhorn

He's burning down DEpointfive0's family tree FOR US! Or is his in Pakistan...... WTH are you again?

ROFL, you both are ridiculous. I'm in AFG. I just help make our various death machines and personnel even better death machines using networks. Our PSDS2/PGSS/PTDS balloons do a good job of giving battlefield commanders a great view of what's going on. Reapers are the shizzle, and now we can extend networking through portable radios. Send 9 lines that sync with GPS location, and simplify the process.

I'm a net admin lol. I make networks go vroom... reliably

DEpointfive0 · 05-28-2013, 01:20 AM

Quote:

Originally Posted by chrischhorn

He's burning down DEpointfive0's family tree FOR US! Or is his in Pakistan...... WTH are you again?

Lol!
SS can kill the rest of my family tree in the terrorist countries, and I'm from Iran Chris...

DarkJak · 05-28-2013, 01:40 AM

It may not translate to your application fully, but from what I've heard about the Motordyne XYZ pipe, the resonator option is slightly quieter than the HFC option and doesn't add any restriction vs a straight pipe. So removing the resonator and adding an HFC section probably won't make it any quieter than it already is if loudness is your main concern, unless you go for something really high cell count, which would be pretty restrictive.
Another possibility is getting a resonated Y-pipe. Off the top of my head, I know Motordyne and Litespeed both offer them. Motordyne's section can be switched for straight piped or HFC, and Litespeed offers in both SS and Ti.

Voice59 · 05-28-2013, 09:54 AM

This might be a stupid question/statement. But i just got rid of my stillen exhaust and installed the MXP true dual exhaust on it. It wasn't a huge change in sound but one that I noticed and liked. My only question is...is a true dual better or worse?

JARblue · 05-28-2013, 10:00 AM

Quote:

Originally Posted by Voice59

This might be a stupid question/statement. But i just got rid of my stillen exhaust and installed the MXP true dual exhaust on it. It wasn't a huge change in sound but one that I noticed and liked. My only question is...is a true dual better or worse?

TDX provides greater flow, which theoretically, should increase power up top. However, there is a little loss of back pressure, which theoretically, can impact torque at the lower end. Generally speaking, people will argue that a TDX is better than non-TDX (from a performance standpoint).

SS_Firehawk · 05-28-2013, 12:18 PM

Quote:

Originally Posted by DarkJak

It may not translate to your application fully, but from what I've heard about the Motordyne XYZ pipe, the resonator option is slightly quieter than the HFC option and doesn't add any restriction vs a straight pipe. So removing the resonator and adding an HFC section probably won't make it any quieter than it already is if loudness is your main concern, unless you go for something really high cell count, which would be pretty restrictive.
Another possibility is getting a resonated Y-pipe. Off the top of my head, I know Motordyne and Litespeed both offer them. Motordyne's section can be switched for straight piped or HFC, and Litespeed offers in both SS and Ti.

Quote:

Originally Posted by SS_Firehawk

Buy a Motordyne Y pipe and get their HFC

Quote:

Originally Posted by SS_Firehawk

Your OP is retarded then. Reread what you wrote. I shouldn't even help your rude @ss. Buy the Lightspeed resonated Y pipe or again the Motordyne Y pipe, but get the resonator.

For your understanding:
Cat= catalytic converter
HFC= high flow catalytic converter
my original MD Y pipe and HFC recommendation= 3" 200 cell high flow cat.

a cat and HFC do the same exact thing, but one flows better than the other.

Deja Vu? I think so.

synolimit · 05-28-2013, 08:20 PM

Quote:

Originally Posted by SS_Firehawk

Your OP is retarded then. Reread what you wrote. I shouldn't even help your rude @ss. Buy the Lightspeed resonated Y pipe or again the Motordyne Y pipe, but get the resonator.

For your understanding:
Cat= catalytic converter
HFC= high flow catalytic converter
my original MD Y pipe and HFC recommendation= 3" 200 cell high flow cat.

a cat and HFC do the same exact thing, but one flows better than the other.

I did, see nothing wrong. Don't want a cat unless i need it for sound and when im talking about cats i think people get the point Cupcake since this is a performance forum. not to mention i said 100-200-300 cell cat. you know any stock cats running that big?! If I do need one will it do anything in the mid pipe? Pretty simple.

Easy Chief. You can't tell what my face was like, my demeanor or the context of me asking if you read my OP. so pull your head out of your *** tough guy. I could care less where you're at right now. And thanks for the kindergarten lessen for someone who knows more about cars than I bet you do.

gomer_110 · 05-28-2013, 08:30 PM

Simple answer is cats need heat to work. The closer to the engine the more effective they will be. Since all you care about is sound and not emissions putting it in the mid-pipe should still yield the desired effect.

synolimit · 05-28-2013, 08:44 PM

[QUOTE=Voice59;2335740]This might be a stupid question/statement. But i just got rid of my stillen exhaust and installed the MXP true dual exhaust on it. It wasn't a huge change in sound but one that I noticed and liked. My only question is...is a true dual better or worse?

That's 60mm pipe right? Any chance you could measure the pipe with a caliper? I'm curious if its OD or ID.

I've decided to build my own cbe but can only find 2.5" OD which is 60mm ID. But if yours is 60mm OD my low end will get killed.

synolimit · 05-28-2013, 08:46 PM

Quote:

Originally Posted by gomer_110

Simple answer is cats need heat to work. The closer to the engine the more effective they will be. Since all you care about is sound and not emissions putting it in the mid-pipe should still yield the desired effect.

Thank you! What I thought.

SS_Firehawk · 05-28-2013, 08:48 PM

Quote:

Originally Posted by synolimit

I did, see nothing wrong. Don't want a cat unless i need it for sound and when im talking about cats i think people get the point Cupcake since this is a performance forum. not to mention i said 100-200-300 cell cat. you know any stock cats running that big?! If I do need one will it do anything in the mid pipe? Pretty simple.

Easy Chief. You can't tell what my face was like, my demeanor or the context of me asking if you read my OP. so pull your head out of your *** tough guy. I could care less where you're at right now. And thanks for the kindergarten lessen for someone who knows more about cars than I bet you do.

If you are getting cats to adjust sound but want maximum performance, you are going about it wrong. I happen to run a cat in my midpipe. It works just fine. I have pictures videos, dyno sheets, everything you were asking. I did not run it to make my exhaust quieter. I ran it because I didn't want the fumes. Not only that, it is connected to a 70mm Y pipe with an exhaust that has a similar db rating. To make this even more interesting, I run long tubes, matching the db and rasp TP's give. Holy shat, I know WTF I'm talking about! Miracle! 70mm is 2.75", there are no cats on the market that directly bolt on in that size. However there are at 3". It still works just fine. To quantify my understanding to your issue, I also bought a resonator I can swap out with the HFC. All is takes is a V clamp and two bolts. Now all of a sudden, I can change how loud the car is.

If you can get over yourself and look at my journal, I have links on the top of my page. And I was actually trying to help you out. Let me know when you come back down to earth. I didn't brag about being where I am or doing what I do. I poked fun at it after the fact. My rank is not a Chief and you haven't been on your knees long enough to call me cupcake. Hopefully you actually find what the hell your looking for. I've been there and done that.

synolimit · 05-29-2013, 11:17 AM

Quote:

Originally Posted by SS_Firehawk

If you are getting cats to adjust sound but want maximum performance, you are going about it wrong. I happen to run a cat in my midpipe. It works just fine. I have pictures videos, dyno sheets, everything you were asking. I did not run it to make my exhaust quieter. I ran it because I didn't want the fumes. Not only that, it is connected to a 70mm Y pipe with an exhaust that has a similar db rating. To make this even more interesting, I run long tubes, matching the db and rasp TP's give. Holy shat, I know WTF I'm talking about! Miracle! 70mm is 2.75", there are no cats on the market that directly bolt on in that size. However there are at 3". It still works just fine. To quantify my understanding to your issue, I also bought a resonator I can swap out with the HFC. All is takes is a V clamp and two bolts. Now all of a sudden, I can change how loud the car is.

If you can get over yourself and look at my journal, I have links on the top of my page. And I was actually trying to help you out. Let me know when you come back down to earth. I didn't brag about being where I am or doing what I do. I poked fun at it after the fact. My rank is not a Chief and you haven't been on your knees long enough to call me cupcake. Hopefully you actually find what the hell your looking for. I've been there and done that.

I am over myself. All I did was ask you a question because you told me something that was irrelevant. I know what Y pipe I want (did want) and if I need a cat ill buy one. Therefore the buy two motordyne comment wasn't needed so I asked if you read the OP. no need to call me an ***.

Lmao how am I going about it the wrong way if like you said adding your resonator back in will make your car louder?? Seems like I'm going about it the best way. And when did I say you didn't have knowledge? Miracle! I didn't. But you must not have a great knowledge at reading since you told me two things I simply said weren't going to happen. That's all, nothing more, nothing less. And who said I would buy something that bolts in? I make my own stuff and I can see many hfc I can buy and weld in for the size I'd need.

SS_Firehawk · 05-29-2013, 12:57 PM

Quote:

Originally Posted by synolimit

I am over myself. All I did was ask you a question because you told me something that was irrelevant. I know what Y pipe I want (did want) and if I need a cat ill buy one. Therefore the buy two motordyne comment wasn't needed so I asked if you read the OP. no need to call me an ***.

Lmao how am I going about it the wrong way if like you said adding your resonator back in will make your car louder?? Seems like I'm going about it the best way. And when did I say you didn't have knowledge? Miracle! I didn't. But you must not have a great knowledge at reading since you told me two things I simply said weren't going to happen. That's all, nothing more, nothing less. And who said I would buy something that bolts in? I make my own stuff and I can see many hfc I can buy and weld in for the size I'd need.

Actually, the resonator will make it quieter. Yes a HFC/cat will quiet things down compared to an open pipe, but muffler is nowhere in the description. You implied my ignorance on your followup post

Quote:

Originally Posted by synolimit

And thanks for the kindergarten lessen for someone who knows more about cars than I bet you do.

Now your just insulting me. Let me break down where the confusion is. Black and red is you with red being the sentence in question, blue is me interpreting that sentence.

Quote:

Originally Posted by synolimit

Ok first I couldn't find this answer and frankly never read or heard anyone say anything about it ever so I'm asking now.

I like fast intentions stuff because of the quality of non restricted flow they have when they sand down the welds on the inside!! Big plus to me. But their stuff is expensive. To keep down on the cost I decided to go with their resonated test pipes.(No problem here, RTP's, you removed the stock cats) Also I'm all about weight and power so no HFC's for me even if they were the same price. So from my understanding, you do not want cats, which you state here)

Now I don't think Top Speeds quality on the inside will be the same but because they're so cheap and people here like them and they fit good and have good power I'm going with the single 70mm CBE with a 12" resonator in the mid section and the 8" resonator in the middle above the two mufflers in the back. Plus their Y pipe too.(You decided on the TS exhaust. Yes, I know it comes with a Y pipe. The Y pipe still maintains the stock mounting points)

So ill have two resonators in the TP's, one in the mid pipe and one coming off the split for the mufflers. I have a feeling this might still be really loud so time for my question!!You think it's too loud, most of us think now "He doesn't want cats, it's too loud, okay... Resonator then is a good recommendation

Where can you install a catalitic converter????( WTF?!? Why is OP asking about the part he says he doesn't want?) I assume since most are installed at the motor they need heat to work! But I don't care if they "work." I care that if I want to install just 1 down the road to cut down on loudness and cost ill just add a 70mm 100-200-300 cell cat in the mid pipe like before or after the mid pipes 12" resonator. (So you understand a bit about cats... Okay, then maybe he wants it for another reason outside of using it as a muffler? I'll recommend the easiest way to implement a cat in the midpipe without hacking up the exhaust. He can sell the current Y pipe and get some cash back.)

What do you all think?

Recommend Motordyne Y pipe with an optional high flow cat. OP now does not have to rip apart his new exhaust and if it not what he wanted, he can:
1: Sell the MD Y pipe and HFC
2: Try the resonator option (or make your own to bolt right in because you clam to fab your own stuff)
3: Do the straight pipe where the HFC would be instead if it is not what you wanted.
4: I even mentioned the Litespeed Y pipe and resonator as well

Then another member damn near posted my recommendations verbatim. Man, we both must have misread your first post... Doubtful.

Quote:

Originally Posted by synolimit

I don't want hfc's. did you read my OP?

Now this is insulting. Now you question my intelligence on the matter. This in turn led me to believe you are being an @ss. So I tell you... And then give you a followup option, and explaining that your first post is retarded then because the info does not make sense. Maybe I should have said "confusing" instead of retarded. You get butt hurt and proclaim your OP is perfectly fine. You then puff your chest and insist I read it wrong, then list Cell densities... because this is a "performance" forum?!?! How long have you been reading here? People ask questions about stock cats and high flow cats ALL THE TIME. FYI, this is a tech area within a Z forum, not "performance forum".

So after all this, I continue to assist, I spent 3 months planning my first batch of mods while I was away from home the first time. I measured inner and outer diameters, I looked at headers, I worried about rasp, I worried about fitment. I went through it already. Why watch some other dude go through the same $hit when I can help? So I again shrugged off your remarks and explained I've gone through this. Yeah I was being facetious and snide; After calling me Chief and Cupcake, then implying I have elementary knowledge on the subject, I think it was in line with our exchange.

I'm done trying to help you. In reality, your exhaust will look so busted and janky after you hack it to pieces, it will make for entertainment in the future, I'll look forward to it. I hope you dedicate post 50 to me too

synolimit · 05-30-2013, 12:19 AM

In response to your blue

"You think it's too loud, most of us think now "He doesn't want cats, it's too loud, okay... Resonator then is a good recommendation" "

I have no idea if its to loud. Hence the thread being called "setup and cat question?" Why would more resonators be a good recommendation if the setup would already have 4??? Hence the idea about ONE cat, ONLY!! If the setup is to loud for me. Common sence to me says "I removed 2 cats, setups to loud, I already have 4 resonators, how bout a hfc cat since that's what was keeping the car quite before or what keeps other cars somewhat quite with dual hfc setups. Also you quoted saying I want to keep cost down. WHY TELL ME BUY A $500 Y pipe when I have one free in my CBE kit???? Not to mention you tell me to buy their hfc too! That's more than my whole CBE!! A 70mm hfc is $100 off a ton of sites and I'd be set. See why your comment is so stupid now in my eyes and why I'd ask if you read the OP?

"( WTF?!? Why is OP asking about the part he says he doesn't want?)"

Again, only if my "FEELING" of it being to loud is correct. Since its a feeling and I have no idea if ill hate it or not. I had a question about where to install a cheap, simple, fast, easy, $100 hfc fix. It had nothing to really do with if it would quieting it down because I'd assume 95% that it would. Was just wondering if the cat would work there. Yes, even though I don't care about pollution as i said, I was still curious if it'd work in the mid pipe so far away from the motor.

PS you gave no help, thanks. And yes my stuff will be busted since I don't make anything like reversed FMIC setups, AOS's, custom fuel lines, exhausts etc etc. guess I should just stop now. O, and I forgot the under side of my car needs to be so damn pretty since this is what 304ss looks like after being in ohio hahaha, yeah my care meters real high on that one

Voice59 · 06-02-2013, 02:51 PM

Quote:

Originally Posted by SS_Firehawk

Actually, the resonator will make it quieter. Yes a HFC/cat will quiet things down compared to an open pipe, but muffler is nowhere in the description. You implied my ignorance on your followup post Now your just insulting me. Let me break down where the confusion is. Black and red is you with red being the sentence in question, blue is me interpreting that sentence.

Recommend Motordyne Y pipe with an optional high flow cat. OP now does not have to rip apart his new exhaust and if it not what he wanted, he can:
1: Sell the MD Y pipe and HFC
2: Try the resonator option (or make your own to bolt right in because you clam to fab your own stuff)
3: Do the straight pipe where the HFC would be instead if it is not what you wanted.
4: I even mentioned the Litespeed Y pipe and resonator as well

Then another member damn near posted my recommendations verbatim. Man, we both must have misread your first post... Doubtful.

Now this is insulting. Now you question my intelligence on the matter. This in turn led me to believe you are being an @ss. So I tell you... And then give you a followup option, and explaining that your first post is retarded then because the info does not make sense. Maybe I should have said "confusing" instead of retarded. You get butt hurt and proclaim your OP is perfectly fine. You then puff your chest and insist I read it wrong, then list Cell densities... because this is a "performance" forum?!?! How long have you been reading here? People ask questions about stock cats and high flow cats ALL THE TIME. FYI, this is a tech area within a Z forum, not "performance forum".

So after all this, I continue to assist, I spent 3 months planning my first batch of mods while I was away from home the first time. I measured inner and outer diameters, I looked at headers, I worried about rasp, I worried about fitment. I went through it already. Why watch some other dude go through the same $hit when I can help? So I again shrugged off your remarks and explained I've gone through this. Yeah I was being facetious and snide; After calling me Chief and Cupcake, then implying I have elementary knowledge on the subject, I think it was in line with our exchange.

I'm done trying to help you. In reality, your exhaust will look so busted and janky after you hack it to pieces, it will make for entertainment in the future, I'll look forward to it. I hope you dedicate post 50 to me too

This might be my favorite post on this site. LOL. Well done.

05-28-2013, 01:40 AM	#18 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,393 Drives: 2009 370Z Rep Power: 13448	It may not translate to your application fully, but from what I've heard about the Motordyne XYZ pipe, the resonator option is slightly quieter than the HFC option and doesn't add any restriction vs a straight pipe. So removing the resonator and adding an HFC section probably won't make it any quieter than it already is if loudness is your main concern, unless you go for something really high cell count, which would be pretty restrictive. Another possibility is getting a resonated Y-pipe. Off the top of my head, I know Motordyne and Litespeed both offer them. Motordyne's section can be switched for straight piped or HFC, and Litespeed offers in both SS and Ti. __________________ @stupidtoycars \| My track vids 09 7AT\|MCS 2WNR\|Topgunz Rotrex\|Ecutek (Eugene)\|Maxxis RC1\|Titan-7 TS-5\|OSG LSD\|Rear Mount Derale Oil Cooler (WIP)+25 Trans Cooler\|Fismo\|G-LOC R12/R10\|Zeta III L\|NLR Wing and Splitter\|CJM Pan and Fuel Hat\|Radium Surge Tank\|AP Racing CP9668

05-28-2013, 08:30 PM	#23 (permalink)
gomer_110 A True Z Fanatic Join Date: Aug 2011 Location: Perrysburg, OH Posts: 17,992 Drives: '11 Nismo #528 GM Rep Power: 36940	Simple answer is cats need heat to work. The closer to the engine the more effective they will be. Since all you care about is sound and not emissions putting it in the mid-pipe should still yield the desired effect. synolimit likes this. __________________ '11 370Z Nismo #528 Fast Intentions \| Stillen \| Motordyne \| Uprev \| CSF \| Zspeed \| Z1 Motorsports \| AST \| Swift \| SPC \| SPL \| Whiteline \| Hotchkis \| Bride \| Schroth \| Robispec \| Cusco \| Nismo \| Volk \| Forgestar \| Hoosier \| RJM '17 Titan Bone Stock

05-28-2013, 08:44 PM	#24 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	[QUOTE=Voice59;2335740]This might be a stupid question/statement. But i just got rid of my stillen exhaust and installed the MXP true dual exhaust on it. It wasn't a huge change in sound but one that I noticed and liked. My only question is...is a true dual better or worse? That's 60mm pipe right? Any chance you could measure the pipe with a caliper? I'm curious if its OD or ID. I've decided to build my own cbe but can only find 2.5" OD which is 60mm ID. But if yours is 60mm OD my low end will get killed. __________________ 13 370z-

05-30-2013, 12:19 AM	#29 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	In response to your blue "You think it's too loud, most of us think now "He doesn't want cats, it's too loud, okay... Resonator then is a good recommendation" " I have no idea if its to loud. Hence the thread being called "setup and cat question?" Why would more resonators be a good recommendation if the setup would already have 4??? Hence the idea about ONE cat, ONLY!! If the setup is to loud for me. Common sence to me says "I removed 2 cats, setups to loud, I already have 4 resonators, how bout a hfc cat since that's what was keeping the car quite before or what keeps other cars somewhat quite with dual hfc setups. Also you quoted saying I want to keep cost down. WHY TELL ME BUY A $500 Y pipe when I have one free in my CBE kit???? Not to mention you tell me to buy their hfc too! That's more than my whole CBE!! A 70mm hfc is $100 off a ton of sites and I'd be set. See why your comment is so stupid now in my eyes and why I'd ask if you read the OP? "( WTF?!? Why is OP asking about the part he says he doesn't want?)" Again, only if my "FEELING" of it being to loud is correct. Since its a feeling and I have no idea if ill hate it or not. I had a question about where to install a cheap, simple, fast, easy, $100 hfc fix. It had nothing to really do with if it would quieting it down because I'd assume 95% that it would. Was just wondering if the cat would work there. Yes, even though I don't care about pollution as i said, I was still curious if it'd work in the mid pipe so far away from the motor. PS you gave no help, thanks. And yes my stuff will be busted since I don't make anything like reversed FMIC setups, AOS's, custom fuel lines, exhausts etc etc. guess I should just stop now. O, and I forgot the under side of my car needs to be so damn pretty since this is what 304ss looks like after being in ohio hahaha, yeah my care meters real high on that one __________________ 13 370z- Last edited by synolimit; 05-30-2013 at 12:29 AM.

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05-28-2013, 09:54 AM	#19 (permalink)
Voice59 Premium Member Join Date: Sep 2011 Location: Va Beach, Virginia Posts: 1,418 Drives: 2009 Nissan 370z Rep Power: 15	This might be a stupid question/statement. But i just got rid of my stillen exhaust and installed the MXP true dual exhaust on it. It wasn't a huge change in sound but one that I noticed and liked. My only question is...is a true dual better or worse?