Setup and catalitic converter question???

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).

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.

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.

05-28-2013, 01:40 AM	#1 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,397 Drives: 2009 370Z Rep Power: 16805	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, 08:44 PM	#4 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3391	[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-

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05-28-2013, 09:54 AM	#2 (permalink)
Voice59 Premium Member Join Date: Sep 2011 Location: Va Beach, Virginia Posts: 1,418 Drives: 2009 Nissan 370z Rep Power: 17	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?