+ 370z Muffler Delete +

jtown82 · 04-14-2010, 09:52 PM

well atm i cant get the bolts to budge. where is a dang breaker bar when you need one :P

NewlyIMPORTed · 04-14-2010, 09:53 PM

when i did my muffler delete i just sawed past the muffler and welded the pipes on

Csquared · 04-14-2010, 09:53 PM

Are you guys sure there is no gains at all? I recall people claiming 3-5 whp with an axel back exhaust?! Isn't this basically the same thing? Or am I totally nuts.

Zsteve · 04-15-2010, 11:55 AM

Quote:

Originally Posted by Csquared

Are you guys sure there is no gains at all? I recall people claiming 3-5 whp with an axel back exhaust?! Isn't this basically the same thing? Or am I totally nuts.

The stock muffler is huge and chambered so having no muffler will net some gains, how much, who knows, as the chambered muffler will cause ristriction. Even if you put a striaght thru muffler on you will net some gains. And if you just use resonators then you tame the volume some and dont mess with the flow, and in place of resonators you could just weld some larger diameter piping in to act like a res. Its all kinda rice for me but Im sure it would work for a cheap mod.

NewlyIMPORTed · 04-14-2010, 09:59 PM

idk but i def felt like i lost HP with the muffler delete idk why

jtown82 · 04-14-2010, 10:14 PM

well i was able to get the bolts on the actually muffler to undo. but i cannot get a few of those brackets that are connected to the rubber gromets/frame to come undone.. and im not gonna saw anything since i dont even know if i will like the sound.

batman_4 · 04-15-2010, 12:22 AM

Quote:

Originally Posted by jtown82

well i was able to get the bolts on the actually muffler to undo. but i cannot get a few of those brackets that are connected to the rubber gromets/frame to come undone.. and im not gonna saw anything since i dont even know if i will like the sound.

took me ~30 mins to do mine. i sprayed all the bolts and hangers/rubber mounts with WD-40 and everything came off flawless. since the initial vid i posted up in the 1st page i have gotten custom pipes/tips to finish it off. still waiting for an exhaust to make me want it.... big fan of Tanabe, waiting on them to see what route i will take.

ddahron · 04-15-2010, 01:29 AM

heres my poor man's exhaust mod:

Sorry for the crappy pic. There is an internal flange so 3-4 washers should allow for the muffler to be fully detached, leaving about 3mm of space. The exhaust becomes loud at 2.5k-3k+ rpms and there is no drone except for when im cruisin at 70mph, but the drone goes away when im going faster than 70mph.

Csquared · 04-15-2010, 08:59 AM

Quote:

Originally Posted by ddahron

heres my poor man's exhaust mod:

Sorry for the crappy pic. There is an internal flange so 3-4 washers should allow for the muffler to be fully detached, leaving about 3mm of space. The exhaust becomes loud at 2.5k-3k+ rpms and there is no drone except for when im cruisin at 70mph, but the drone goes away when im going faster than 70mph.

How's that working out for you? Wouldn't it sound different from if you completely removed it?

RCZ · 04-14-2010, 10:21 PM

I thought that sounds pretty awesome. Probably too loud for the street, but it sounds pretty good. I gotta make one of those videos haha.

jtown82 · 04-14-2010, 10:32 PM

heh these cars are quiet compared to my 2001 TA. just curious if anyone ever weight there muffler setup. it def has some major weight to it.

ddahron · 04-14-2010, 11:15 PM

Why fabricate new pipes when you can use your stock exhaust without any modifications? What I did was remove the gaskets and replace em with 3-4 washers. Your muffler will pretty much be detached. Ill post pics up whenever I can.

jtown82 · 04-15-2010, 11:47 AM

Quote:

Originally Posted by ddahron

Why fabricate new pipes when you can use your stock exhaust without any modifications? What I did was remove the gaskets and replace em with 3-4 washers. Your muffler will pretty much be detached. Ill post pics up whenever I can.

im not sure im following what your saying. how would a few washers replace the gap of the muffler delete ?

ddahron · 04-15-2010, 05:26 PM

Quote:

Originally Posted by spearfish25

Not sure you want to keep the car that way. You'll have hot exhaust gases swirling around under the car. They can melt wires, discolor the underbody components and potentially get exhaust fumes inside the vehicle. You can always get some fab'ed tips like I did before doing a formal exhaust. (search for muffler delete and you'll see my threads)

Ive been driving around with this mod for over 2 months and there is no discoloration, fumes in the cabin, etc. During cold mornings, I can still see fumes bypassing the gap and entering/exiting the muffler. I got the idea from my brother who has been driving his wrx with this mod for years and no problems whatsoever. But if you want to be on the safe side, fabricate some pipes.

Quote:

Originally Posted by Csquared

How's that working out for you? Wouldn't it sound different from if you completely removed it?

Ive only tested the car for about 20mins with a full muffler delete before i did this mod, so its kinda hard to recollect my experience, but I am pretty sure this mod toned it down a bit.

Quote:

Originally Posted by jtown82

im not sure im following what your saying. how would a few washers replace the gap of the muffler delete ?

As you can see in the picture, the gasket is replaced with a few washers, therefore leaving a gap.

jtown82 · 04-15-2010, 07:16 PM

Quote:

Originally Posted by ddahron

As you can see in the picture, the gasket is replaced with a few washers, therefore leaving a gap.

i guess im missing what you did to your exhaust. did you reattach your muffler back just without the gaskets? or did you have to remove the gaskets because your aftermarket pipes in place of the muffler? sorry i feel dumb atm since your picture only shows the washer area and i cant see what you actually had changed to your exhaust other than removing the gaskets

04-14-2010, 09:53 PM	#2 (permalink)
NewlyIMPORTed A True Z Fanatic Join Date: May 2009 Location: Kennesaw, GA Posts: 1,109 Drives: 11 STI Sedan Rep Power: 20	when i did my muffler delete i just sawed past the muffler and welded the pipes on __________________ 2011 WRX STICobb Accessport, Nameless Performance exhaust, COBB SF Intake, COBB downpipe, 20% tint, Work Emotion XD9's

04-14-2010, 09:59 PM	#5 (permalink)
NewlyIMPORTed A True Z Fanatic Join Date: May 2009 Location: Kennesaw, GA Posts: 1,109 Drives: 11 STI Sedan Rep Power: 20	idk but i def felt like i lost HP with the muffler delete idk why __________________ 2011 WRX STICobb Accessport, Nameless Performance exhaust, COBB SF Intake, COBB downpipe, 20% tint, Work Emotion XD9's

04-14-2010, 10:32 PM	#11 (permalink)
jtown82 Base Member Join Date: Mar 2010 Location: southern Arkansas Posts: 158 Drives: 09 chicane yellow Z Rep Power: 17	heh these cars are quiet compared to my 2001 TA. just curious if anyone ever weight there muffler setup. it def has some major weight to it. Last edited by jtown82; 04-14-2010 at 10:51 PM.

04-14-2010, 11:15 PM	#12 (permalink)
ddahron Base Member Join Date: Aug 2009 Location: norcal Posts: 35 Drives: 09 370z PW Rep Power: 17	Why fabricate new pipes when you can use your stock exhaust without any modifications? What I did was remove the gaskets and replace em with 3-4 washers. Your muffler will pretty much be detached. Ill post pics up whenever I can. Last edited by ddahron; 04-14-2010 at 11:21 PM.

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04-14-2010, 09:52 PM	#1 (permalink)
jtown82 Base Member Join Date: Mar 2010 Location: southern Arkansas Posts: 158 Drives: 09 chicane yellow Z Rep Power: 17	well atm i cant get the bolts to budge. where is a dang breaker bar when you need one :P

04-14-2010, 09:53 PM	#3 (permalink)
Csquared Enthusiast Member Join Date: Mar 2010 Location: Hong Kong Posts: 302 Drives: 09 Nissan 370z Y 7sp Rep Power: 17	Are you guys sure there is no gains at all? I recall people claiming 3-5 whp with an axel back exhaust?! Isn't this basically the same thing? Or am I totally nuts.

04-14-2010, 10:14 PM	#6 (permalink)
jtown82 Base Member Join Date: Mar 2010 Location: southern Arkansas Posts: 158 Drives: 09 chicane yellow Z Rep Power: 17	well i was able to get the bolts on the actually muffler to undo. but i cannot get a few of those brackets that are connected to the rubber gromets/frame to come undone.. and im not gonna saw anything since i dont even know if i will like the sound.

04-15-2010, 01:29 AM	#8 (permalink)
ddahron Base Member Join Date: Aug 2009 Location: norcal Posts: 35 Drives: 09 370z PW Rep Power: 17	heres my poor man's exhaust mod: Sorry for the crappy pic. There is an internal flange so 3-4 washers should allow for the muffler to be fully detached, leaving about 3mm of space. The exhaust becomes loud at 2.5k-3k+ rpms and there is no drone except for when im cruisin at 70mph, but the drone goes away when im going faster than 70mph.

04-14-2010, 10:21 PM	#10 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	I thought that sounds pretty awesome. Probably too loud for the street, but it sounds pretty good. I gotta make one of those videos haha.

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