+ 370z Muffler Delete +

Phimosis · 06-03-2009, 01:46 PM

Quote:

Originally Posted by Captain Tuttl

???

How would removing the mufflers effect the level of CO emissions?

The video sounds really good BTW.

It's not that it changes the ammount, it could potentially be a problem dropping CO under the floorboard instead of out the back, especially when idling.

butters167 · 06-02-2009, 03:22 PM

Batman when you were making your video did you happen to check and see how hot everything got underneath with the exhaust after you made your runs.

Phimosis · 06-02-2009, 03:42 PM

I did this to my car before I got any aftermarket parts.

I ran it like this for right at one week. I did worry about fumes, heat, melting things, but I kept checking and everything looked fine..... I also made sure I was always moving.... and even shut it off at stop lights.

The sound is bad azz. It's way racier than my Stillen exhaust, but is about twice as loud (3db). I love the "cackle" when you come off the throttle for shifts or when when you use compression deceleration after downshifts.

If you chop up your rear muffler section and reuse the tips, you could have "custom" exhaust a system built for under $100.

The downsides: 1) It's too loud for everyday use and would be annoying on long drives or taking your boss to lunch. 2) you could easily get ticketed with that sound level if a cop saw you on the throttle. 3) It's still small diameter tubing and you're probably not ganing hp. 4) There's a lot of droning. This may be from exhaust pulses hitting the heat shield over the gas tank and may go away with exahust tips in the appropriate location.

PS. Batman, can you repost the original "muffler delete" video to youtube without the music or post that video to a different site so we can see the full length vid in all its glory?

Thanks,

Phim

Advice on exhaust?

batman_4 · 06-02-2009, 06:28 PM

Quote:

Originally Posted by Phimosis

PS. Batman, can you repost the original "muffler delete" video to youtube without the music or post that video to a different site so we can see the full length vid in all its glory?

Thanks,

Phim

I tried uploading my original vid to youtube, photobucket, myspace, and some other forum and couldn't get audio because of the rights.

Quote:

Originally Posted by butters167

Batman when you were making your video did you happen to check and see how hot everything got underneath with the exhaust after you made your runs.

It was hot but can't make an accurate calculation as the street is burning hot as well.

Quote:

Originally Posted by SoCal 370Z

Ahhhhh...nothing like the odorless fumes of carbon monoxide in the morning whilst driving to Richard Wagner's "Ride of the Valkyries"!

Negative sir, don't have any CO smell....i think that comes along when changing the catalytic converters.

Quote:

Originally Posted by Diversion

Edit: Yikes, it looks like the pipes are pointing upwards into the car? Think that will burn something up?

Highly doubt it will to much damage. As someone mentioned that the pipes point upwards, i noticed that there is an aluminum shield (silver thing in vid) that takes the heat from the pipes....not saying its OK as i think that shield protects the gas tank from heat but it should be fine for a week or so before i get some tips customized.

Thanks on the feedback, makes me feel that my Z sounds possessed now....especially when downshifting

Captain Tuttl · 06-02-2009, 07:18 PM

Have you noticed a drop in fuel economy or other undesirable outcome from the reduced backpressure.

With some new pipes, mounts and tips, this seems to be a cheap mod.

batman_4 · 06-02-2009, 09:21 PM

Quote:

Originally Posted by Captain Tuttl

Have you noticed a drop in fuel economy or other undesirable outcome from the reduced backpressure.

With some new pipes, mounts and tips, this seems to be a cheap mod.

Fuel economy has been affected but i blame it on myself since i've been accelerating more than usual just to hear the exhaust

I plan on getting this cheap set-up done by mid next week. In my meantime i'll wait for a bigger variety in exhausts.

ChrisSlicks · 06-02-2009, 07:38 PM

Quote:

Originally Posted by batman_4

Negative sir, don't have any CO smell....i think that comes along when changing the catalytic converters.

CO is completely odorless, and deadly. I don't recommend you go sniffing your exhaust.

And Semtex is correct, the muffler has nothing to do with emissions.

semtex · 06-02-2009, 06:17 PM

I would think that it won't have any impact. Mufflers are strictly for sound suppression. As far as emissions control goes, that's what the catalytic converters are for. The exhaust gases have already been 'scrubbed' by the time they get down to the mufflers.

Shift · 06-02-2009, 07:40 PM

Did nothing for me....

Diversion · 06-02-2009, 08:23 PM

Just remember I muffler deleted my WRX weeks after I bought it and I remember it sounding like complete crap.. But it was fun being loud for a few days.

LiquidZ · 06-02-2009, 09:22 PM

That doesn't sound bad at all really.

butters167 · 06-02-2009, 10:36 PM

Took mine off today after reading this post. Its sounds pretty good but is a little loud for me, only took 15 minutes to remove. I'll probably leave it off until my exhaust comes in a couple weeks.

NisMoDo · 06-02-2009, 10:44 PM

it actually sounds waaay better then i expected.
sounds more beefier now.

DIGItonium · 06-02-2009, 10:46 PM

Wow that sounds really nice. I'd like something like that, but a bit smoother with the exhaust on and not as loud lol.

JonnieN · 06-03-2009, 12:50 AM

With just the Berk HFC and the stillen Gen 3 intake and a full (OEM) cat back. Would it sound anything close to this?

06-02-2009, 03:22 PM	#2 (permalink)
butters167 Base Member Join Date: May 2009 Location: Oklahoma Posts: 59 Drives: 6sp 370Z sport pkg Rep Power: 18	Batman when you were making your video did you happen to check and see how hot everything got underneath with the exhaust after you made your runs. xerokiler likes this.

06-02-2009, 03:42 PM	#3 (permalink)
Phimosis Enthusiast Member Join Date: May 2009 Location: Oildale, CA Posts: 412 Drives: 2013 911 4S Rep Power: 418	I did this to my car before I got any aftermarket parts. I ran it like this for right at one week. I did worry about fumes, heat, melting things, but I kept checking and everything looked fine..... I also made sure I was always moving.... and even shut it off at stop lights. The sound is bad azz. It's way racier than my Stillen exhaust, but is about twice as loud (3db). I love the "cackle" when you come off the throttle for shifts or when when you use compression deceleration after downshifts. If you chop up your rear muffler section and reuse the tips, you could have "custom" exhaust a system built for under $100. The downsides: 1) It's too loud for everyday use and would be annoying on long drives or taking your boss to lunch. 2) you could easily get ticketed with that sound level if a cop saw you on the throttle. 3) It's still small diameter tubing and you're probably not ganing hp. 4) There's a lot of droning. This may be from exhaust pulses hitting the heat shield over the gas tank and may go away with exahust tips in the appropriate location. PS. Batman, can you repost the original "muffler delete" video to youtube without the music or post that video to a different site so we can see the full length vid in all its glory? Thanks, Phim Advice on exhaust? Last edited by Phimosis; 06-02-2009 at 03:49 PM.

06-02-2009, 06:17 PM	#8 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 55 Posts: 5,995 Drives: People to drink Rep Power: 34	I would think that it won't have any impact. Mufflers are strictly for sound suppression. As far as emissions control goes, that's what the catalytic converters are for. The exhaust gases have already been 'scrubbed' by the time they get down to the mufflers. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

06-02-2009, 09:22 PM	#11 (permalink)
LiquidZ A True Z Fanatic Join Date: Nov 2008 Location: Columbus, OH Posts: 1,940 Drives: Mag. Black 2009 370Z Rep Power: 706	That doesn't sound bad at all really. __________________

06-02-2009, 10:36 PM	#12 (permalink)
butters167 Base Member Join Date: May 2009 Location: Oklahoma Posts: 59 Drives: 6sp 370Z sport pkg Rep Power: 18	Took mine off today after reading this post. Its sounds pretty good but is a little loud for me, only took 15 minutes to remove. I'll probably leave it off until my exhaust comes in a couple weeks. labrador likes this.

06-02-2009, 07:18 PM	#5 (permalink)
Captain Tuttl Base Member Join Date: Apr 2009 Location: PA Posts: 36 Drives: 2019 370Z Nismo Rep Power: 18	Have you noticed a drop in fuel economy or other undesirable outcome from the reduced backpressure. With some new pipes, mounts and tips, this seems to be a cheap mod.

06-02-2009, 07:40 PM	#9 (permalink)
Shift Base Member Join Date: Apr 2009 Location: Glen Rock,PA Age: 59 Posts: 220 Drives: (370-Z MT Blue 7A) Rep Power: 18	Did nothing for me....

06-02-2009, 08:23 PM	#10 (permalink)
Diversion Enthusiast Member Join Date: Apr 2009 Location: Jacksonville, Florida Posts: 393 Drives: 09 370Z Silver/Persi Rep Power: 286	Just remember I muffler deleted my WRX weeks after I bought it and I remember it sounding like complete crap.. But it was fun being loud for a few days.

06-02-2009, 10:44 PM	#13 (permalink)
NisMoDo Base Member Join Date: Apr 2009 Location: de Posts: 34 Drives: no Z for me :( Rep Power: 18	it actually sounds waaay better then i expected. sounds more beefier now.

06-02-2009, 10:46 PM	#14 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 44	Wow that sounds really nice. I'd like something like that, but a bit smoother with the exhaust on and not as loud lol. __________________

06-03-2009, 12:50 AM	#15 (permalink)
JonnieN Base Member Join Date: Apr 2009 Location: Upstate, NY Posts: 153 Drives: 370z PW 6MT Rep Power: 18	With just the Berk HFC and the stillen Gen 3 intake and a full (OEM) cat back. Would it sound anything close to this? Last edited by JonnieN; 06-03-2009 at 03:39 AM.

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