+ 370z Muffler Delete +

batman_4 · 06-02-2009, 12:49 PM

Past weekend i was bored so i decided to remove my muffler box and see how the exhaust note would change. I had a bad feeling about it but it only took ~30 minutes....turned it on and was surprised

. Anyways its a tad to loud for my style but love the deepness...now im going to get some nice tips + piping fabricated. For now this will be temporary as i do not have the funds to buy a full exhaust system...that will come later. Here is a quick vid i made

YouTube - 370z Muffler Delete No Music

wstar · 06-02-2009, 12:52 PM

It sounds better than I would have expected lol. But I wouldn't expect any serious power bump from this. The mufflers aren't the problem with the exhaust flow, it's the cats and Y-pipe mostly.

semtex · 06-02-2009, 12:53 PM

Wow, I'm surprised at how quiet/tame that sounds. I think this hints at how restrictive the stock cats really are (vs. the muffler), because if you listen to a Z with HFCs and the stock cat-back (incl. the muffler), it's more aggressive sounding!

CBRich · 06-02-2009, 01:01 PM

That's actually not bad at all.

RCZ · 06-02-2009, 01:04 PM

nothing to write home about.

FuszNissan · 06-02-2009, 01:05 PM

I'm pretty impressed, I was expecting something horrible coming from this. Sounds pretty good. When I changed the HFC is sounds louder with the stock muffler on...lol

semtex · 06-02-2009, 01:07 PM

I agree, it does sound good. I think this is really valuable information, actually, because it opens up a new avenue for modification. Specifically, what I'm thinking of is people who might want a deeper sound, but don't want to mess with their cats. Or maybe they live somewhere where it's absolutely forbidden to touch the cats. Well, now they have an option other than replacing the cats -- just delete the muffler. Now all we need is for someone to make a bolt-on kit so that you can just bolt some pipes/tips in place of where the muffler used to be.

ChrisSlicks · 06-02-2009, 01:42 PM

The muffler is what is supporting the rear end of the exhaust, so if you take the muffler off the exhaust is just flopping about. So any tips you make up will need to have a bracket attached.

shabarivas · 06-02-2009, 01:49 PM

That actually sounds sick - just dont melt your bumper like this guy

Diversion · 06-02-2009, 02:40 PM

Wow.. that sounds like a nice exhaust is already on the car.. I might do this for a week and see how I like it.. maybe it'll give me an idea of what it's like to own an exhaust? Thoughts?

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

semtex · 06-02-2009, 02:46 PM

Quote:

Originally Posted by Diversion

Wow.. that sounds like a nice exhaust is already on the car.. I might do this for a week and see how I like it.. maybe it'll give me an idea of what it's like to own an exhaust? Thoughts?

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

I think it'd be risky to drive around like that for any prolonged length of time.

butters167 · 06-02-2009, 03:48 PM

I'm still waiting on my 5zigen exhaust which is still about two weeks out. I may do this until my exhaust gets here. I dont have any long drives planned between now and then so I think I'll be okay, plus it means less to take off when it gets here.

SoCal 370Z · 06-02-2009, 04:11 PM

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

butters167 · 06-02-2009, 04:22 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, 04:42 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?

06-02-2009, 12:49 PM	#1 (permalink)
batman_4 A True Z Fanatic Join Date: Dec 2008 Location: McAllen Tx. Posts: 1,038 Drives: '09 PW 370Z Rep Power: 368	+ 370z Muffler Delete + Past weekend i was bored so i decided to remove my muffler box and see how the exhaust note would change. I had a bad feeling about it but it only took ~30 minutes....turned it on and was surprised . Anyways its a tad to loud for my style but love the deepness...now im going to get some nice tips + piping fabricated. For now this will be temporary as i do not have the funds to buy a full exhaust system...that will come later. Here is a quick vid i made YouTube - 370z Muffler Delete No Music __________________ '09 6spd. Touring: Eibach / SPC / Motordyne / Berk / Z1 / Oneighty / Mines / SSR / Stillen / CFE

06-02-2009, 12:52 PM	#2 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	It sounds better than I would have expected lol. But I wouldn't expect any serious power bump from this. The mufflers aren't the problem with the exhaust flow, it's the cats and Y-pipe mostly. __________________ 7AT Track Car! Journal thread / Car setup details

06-02-2009, 12:53 PM	#3 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	Wow, I'm surprised at how quiet/tame that sounds. I think this hints at how restrictive the stock cats really are (vs. the muffler), because if you listen to a Z with HFCs and the stock cat-back (incl. the muffler), it's more aggressive sounding! __________________ "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, 01:05 PM	#6 (permalink)
FuszNissan A True Z Fanatic Join Date: May 2009 Location: St. Louis Posts: 14,275 Drives: Pure Sex Rep Power: 542	I'm pretty impressed, I was expecting something horrible coming from this. Sounds pretty good. When I changed the HFC is sounds louder with the stock muffler on...lol __________________ Mods: Too Many to list! LouFuszNissan ZDAYZ 2012

06-02-2009, 01:07 PM	#7 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 32	I agree, it does sound good. I think this is really valuable information, actually, because it opens up a new avenue for modification. Specifically, what I'm thinking of is people who might want a deeper sound, but don't want to mess with their cats. Or maybe they live somewhere where it's absolutely forbidden to touch the cats. Well, now they have an option other than replacing the cats -- just delete the muffler. Now all we need is for someone to make a bolt-on kit so that you can just bolt some pipes/tips in place of where the muffler used to be. __________________ "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, 01:01 PM	#4 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	That's actually not bad at all.

06-02-2009, 01:04 PM	#5 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	nothing to write home about.

06-02-2009, 01:42 PM	#8 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	The muffler is what is supporting the rear end of the exhaust, so if you take the muffler off the exhaust is just flopping about. So any tips you make up will need to have a bracket attached.

06-02-2009, 01:49 PM	#9 (permalink)
shabarivas A True Z Fanatic Join Date: Apr 2009 Location: Sacramento, CA Posts: 2,188 Drives: 370z MB 6mt Rep Power: 914	That actually sounds sick - just dont melt your bumper like this guy

06-02-2009, 02:40 PM	#10 (permalink)
Diversion Enthusiast Member Join Date: Apr 2009 Location: Jacksonville, Florida Posts: 393 Drives: 09 370Z Silver/Persi Rep Power: 284	Wow.. that sounds like a nice exhaust is already on the car.. I might do this for a week and see how I like it.. maybe it'll give me an idea of what it's like to own an exhaust? Thoughts? Edit: Yikes, it looks like the pipes are pointing upwards into the car? Think that will burn something up? Last edited by Diversion; 06-02-2009 at 02:43 PM.

06-02-2009, 03:48 PM	#12 (permalink)
butters167 Base Member Join Date: May 2009 Location: Oklahoma Posts: 59 Drives: 6sp 370Z sport pkg Rep Power: 16	I'm still waiting on my 5zigen exhaust which is still about two weeks out. I may do this until my exhaust gets here. I dont have any long drives planned between now and then so I think I'll be okay, plus it means less to take off when it gets here.

06-02-2009, 04:11 PM	#13 (permalink)
SoCal 370Z A True Z Fanatic Join Date: Feb 2009 Location: US of A Posts: 2,842 Drives: Answers Rep Power: 33	Ahhhhh...nothing like the odorless fumes of carbon monoxide in the morning whilst driving to Richard Wagner's "Ride of the Valkyries"! __________________ ( Click to show/hide ) Why I NEVER say NO to the Panda Lou Fusz!!! Last edited by SoCal 370Z; 06-02-2009 at 04:52 PM.

06-02-2009, 04:22 PM	#14 (permalink)
butters167 Base Member Join Date: May 2009 Location: Oklahoma Posts: 59 Drives: 6sp 370Z sport pkg Rep Power: 16	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, 04:42 PM	#15 (permalink)
Phimosis Enthusiast Member Join Date: May 2009 Location: Oildale, CA Posts: 412 Drives: 2013 911 4S Rep Power: 416	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 04:49 PM.

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