Modifying exhaust to be quieter?? - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Koopa Troopa · 01-20-2008, 10:19 AM

I hear glass packs do wonders...

Is your entire exhaust SS Autochrome? I'm guessing it's a thinner wall on the piping which would cause your exhaust to sound crappy and loud. Get a custom made exhaust built with thicker walls. Also an exhaust control valve works wonders.

mrpeepers · 01-20-2008, 10:33 AM

That's the inherent problems with custom exhausts, or exhausts that have been modified is that the sound is not "tuned"

I agree with your plan to get a muffler.

Tenchuu · 01-20-2008, 10:46 AM

Top fuel exhausts have two resonators built into them and are whisper qiuiet. i put a resonated testy pipe in the top fuel exhaust asn there is virtually no exhaust note now. quieter than stock.

nissandr1ft · 01-20-2008, 12:06 PM

The reason I don't go back to stock exhaust is because that would be exactly opposite of anything I've done to the car. I don't know what the primaries are on the header, but it's about a 2.5" outlet. I'm trying to do this while keeping all my power, otherwise Ill deal with the noise. Im just looking at options that do't kill power completely.

nissandr1ft · 02-28-2008, 05:25 PM

Reviving the dead thread...

I picked up a Vibrant Ultra quiet resonator (http://vibrantperformance.com/catalo...08468ae4ecde84) on the cheap,and I'm trying to decide if I want to add it to what I already have, or replace the magnaflow resonator (http://www.magnaflow.com/02product/s...ne=main&id=849). I'm also trying to figure out whether putting it closer to the motor would help more, or do the same job wherever it goes. Ive been hearing the thin gauge tubing could be part of my problem, and in that case Id say with the resonator towards the motor it would help quiet the exhaust the closer to the motor side.

Matej · 02-28-2008, 05:37 PM

Drill a hole through a potato, and when you're commuting just throw it in your muffler, and when you get home from work you'll have a delicious baked potato.

muddafakka · 02-28-2008, 06:29 PM

Quote:

Originally Posted by Matej

Drill a hole through a potato, and when you're commuting just throw it in your muffler, and when you get home from work you'll have a delicious baked potato.

Wow you can read minds. I was just about post the same thing.

95KA-Turbo · 02-28-2008, 09:40 PM

Add a turn down to the tip! It can lower the noise level a few decibels.

blasting_speed · 02-28-2008, 11:40 PM

Get another s13 daily driver. I wouldn't mess with the one you're gonna get too much.

blitzkrgCT9A · 02-29-2008, 12:10 AM

go with Apex'i WS2 NOIR and you will be happy!

I have been happy with mine.

wannabe_drifter · 02-29-2008, 11:36 AM

Whenever your done, could you post of video of how it sounds after...

I will be looking for the same kind of exhaust some time before summer.

IIIXziuR · 02-29-2008, 12:26 PM

+1 on The Apex WS Noir
I have one on my NA KA S14 and it sounds just perfect.
It has a nice "sporty" exhaust note for a daily driver and flows pretty nicely. Has a nice sound when you open it up too, no annoying drone on the highway.

It might not look as flashy as a s/s muffler but the subtle black finish is really cool and low key, IMO.

SHIFT_*grind* · 02-29-2008, 01:53 PM

I have a Fujitsubo 3" on the way that should be pretty quiet as well. At least, a lot quieter than the exhaust that's on my car...

I'll post up when I get it on my car and see how it sounds. Fujitsubos can be found pretty cheap used (mine was ~$200).

wannabe_drifter · 03-03-2008, 12:55 PM

To the guy(s) with the apexi ws noir: Do you have a video of that exhaust on the car to hear what it sounds like ?

blitzkrgCT9A · 03-03-2008, 03:55 PM

it sounds almost stock at idle.. slightly louder than stock at WOT. Definitely way quieter than JDM fart-cans.

BoostinGST · 03-03-2008, 04:15 PM

another thing that would work is the sard torque control valve.

not only will it lower the sound some but it would give you more torque at the bottom end and doesnt need to be switched on and off like the apexi ecv

Quail · 03-03-2008, 06:21 PM

I want to do the same with my exhaust. I've got a decat silencer (rather than the straight through testpipe/decat thats currently on there - see below). Also getting another silencer welded in to the exhaust. Should quieten down things quite a bit. I know guys in the UK have welded silencers in to their downpipe too (to meet track regs).

Have you got any more pics of your car? Love the wheels

berz · 03-03-2008, 06:27 PM

cant have the best of both worlds so run stock piping man

***S14DB*** · 03-03-2008, 08:08 PM

Quote:

Originally Posted by Quail

I want to do the same with my exhaust. I've got a decat silencer (rather than the straight through testpipe/decat thats currently on there - see below). Also getting another silencer welded in to the exhaust. Should quieten down things quite a bit. I know guys in the UK have welded silencers in to their downpipe too (to meet track regs).

http://img.photobucket.com/albums/v6...atmanifold.jpg

Have you got any more pics of your car? Love the wheels

Yeah the resonated test pipe gets rid of some of the rasp and off notes from the exhaust. Much better than a straight pipe or gutted cat.

s13drob · 03-03-2008, 08:13 PM

nice neighborhood. hahaha

bob marley · 03-04-2008, 07:13 AM

I don't know if anyone has tried A'PEXi's active valve tail silencer. At idle and cruising around town it's very quiet. The engine noise usually drowns out the exhaust noise. At wide open throttle, it sounds like any other coffee can catback. I only know 1 person using it and we haven't noticed any power loss.

http://www.apexi-usa.com/product_exh...=217&pageNum=1

01-20-2008, 10:19 AM	#31
Koopa Troopa Post Whore! Join Date: Sep 2006 Location: 北谷著, 沖縄県、日本 Posts: 2,565 Trader Rating: (3) Feedback Score: 3 reviews	I hear glass packs do wonders... Is your entire exhaust SS Autochrome? I'm guessing it's a thinner wall on the piping which would cause your exhaust to sound crappy and loud. Get a custom made exhaust built with thicker walls. Also an exhaust control valve works wonders. __________________ Buy my Stillway shifter!

01-20-2008, 12:06 PM	#34
nissandr1ft Zilvia Member Join Date: Sep 2004 Location: Clayton, NC Age: 40 Posts: 284 Trader Rating: (0) Feedback Score: 0 reviews	The reason I don't go back to stock exhaust is because that would be exactly opposite of anything I've done to the car. I don't know what the primaries are on the header, but it's about a 2.5" outlet. I'm trying to do this while keeping all my power, otherwise Ill deal with the noise. Im just looking at options that do't kill power completely. __________________ ------------------------- www.carolinanissans.com -------------------------

02-28-2008, 05:25 PM	#35
nissandr1ft Zilvia Member Join Date: Sep 2004 Location: Clayton, NC Age: 40 Posts: 284 Trader Rating: (0) Feedback Score: 0 reviews	Reviving the dead thread... I picked up a Vibrant Ultra quiet resonator (http://vibrantperformance.com/catalo...08468ae4ecde84) on the cheap,and I'm trying to decide if I want to add it to what I already have, or replace the magnaflow resonator (http://www.magnaflow.com/02product/s...ne=main&id=849). I'm also trying to figure out whether putting it closer to the motor would help more, or do the same job wherever it goes. Ive been hearing the thin gauge tubing could be part of my problem, and in that case Id say with the resonator towards the motor it would help quiet the exhaust the closer to the motor side. __________________ ------------------------- www.carolinanissans.com -------------------------

02-28-2008, 11:40 PM	#39
blasting_speed Post Whore! Join Date: Jan 2008 Location: Treno di mezzanotte di amore Posts: 2,593 Trader Rating: (8) Feedback Score: 8 reviews	Get another s13 daily driver. I wouldn't mess with the one you're gonna get too much. __________________

02-29-2008, 11:36 AM	#41
wannabe_drifter Zilvia Member Join Date: Jul 2006 Location: Québec, Canada Age: 40 Posts: 245 Trader Rating: (0) Feedback Score: 0 reviews	Whenever your done, could you post of video of how it sounds after... I will be looking for the same kind of exhaust some time before summer. __________________

01-20-2008, 10:33 AM	#32
mrpeepers Zilvia Junkie Join Date: Aug 2007 Location: Central New Jersey Posts: 322 Trader Rating: (0) Feedback Score: 0 reviews	That's the inherent problems with custom exhausts, or exhausts that have been modified is that the sound is not "tuned" I agree with your plan to get a muffler.

01-20-2008, 10:46 AM	#33
Tenchuu Post Whore! Join Date: Apr 2004 Location: Oregon Age: 41 Posts: 2,474 Trader Rating: (8) Rides Gallery: Tenchuu Feedback Score: 8 reviews	Top fuel exhausts have two resonators built into them and are whisper qiuiet. i put a resonated testy pipe in the top fuel exhaust asn there is virtually no exhaust note now. quieter than stock.

02-28-2008, 05:37 PM	#36
Matej Post Whore! Join Date: Feb 2007 Location: N/A Posts: 9,423 Trader Rating: (39) Feedback Score: 39 reviews	Drill a hole through a potato, and when you're commuting just throw it in your muffler, and when you get home from work you'll have a delicious baked potato.

02-28-2008, 09:40 PM	#38
95KA-Turbo Post Whore! Join Date: Jul 2005 Location: LA Age: 38 Posts: 3,402 Trader Rating: (19) Feedback Score: 19 reviews	Add a turn down to the tip! It can lower the noise level a few decibels.

02-29-2008, 12:10 AM	#40
blitzkrgCT9A Zilvia Junkie Join Date: Dec 2003 Location: Oakland, CA Posts: 544 Trader Rating: (7) Feedback Score: 7 reviews	go with Apex'i WS2 NOIR and you will be happy! I have been happy with mine.

02-29-2008, 12:26 PM	#42
IIIXziuR Post Whore! Join Date: Apr 2007 Location: Left Hand Path Posts: 2,655 Trader Rating: (22) Feedback Score: 22 reviews	+1 on The Apex WS Noir I have one on my NA KA S14 and it sounds just perfect. It has a nice "sporty" exhaust note for a daily driver and flows pretty nicely. Has a nice sound when you open it up too, no annoying drone on the highway. It might not look as flashy as a s/s muffler but the subtle black finish is really cool and low key, IMO.

02-29-2008, 01:53 PM	#43
SHIFT_grind Nissanaholic! Join Date: Nov 2004 Location: NWA Age: 41 Posts: 2,066 Trader Rating: (7) Feedback Score: 7 reviews	I have a Fujitsubo 3" on the way that should be pretty quiet as well. At least, a lot quieter than the exhaust that's on my car... I'll post up when I get it on my car and see how it sounds. Fujitsubos can be found pretty cheap used (mine was ~$200). __________________ My seller review thread

03-03-2008, 12:55 PM	#44
wannabe_drifter Zilvia Member Join Date: Jul 2006 Location: Québec, Canada Age: 40 Posts: 245 Trader Rating: (0) Feedback Score: 0 reviews	To the guy(s) with the apexi ws noir: Do you have a video of that exhaust on the car to hear what it sounds like ? __________________

03-03-2008, 03:55 PM	#45
blitzkrgCT9A Zilvia Junkie Join Date: Dec 2003 Location: Oakland, CA Posts: 544 Trader Rating: (7) Feedback Score: 7 reviews	it sounds almost stock at idle.. slightly louder than stock at WOT. Definitely way quieter than JDM fart-cans.

03-03-2008, 04:15 PM	#46
BoostinGST Zilvia Addict Join Date: Mar 2006 Location: Ocean Springs, MS Posts: 726 Trader Rating: (0) Feedback Score: 0 reviews	another thing that would work is the sard torque control valve. not only will it lower the sound some but it would give you more torque at the bottom end and doesnt need to be switched on and off like the apexi ecv __________________ www.DecalsStore.com custom decals... buy a premie account and save money from me

03-03-2008, 06:21 PM	#47
Quail Zilvia FREAK! Join Date: Jul 2007 Location: UK Age: 37 Posts: 1,378 Trader Rating: (1) Feedback Score: 1 reviews	I want to do the same with my exhaust. I've got a decat silencer (rather than the straight through testpipe/decat thats currently on there - see below). Also getting another silencer welded in to the exhaust. Should quieten down things quite a bit. I know guys in the UK have welded silencers in to their downpipe too (to meet track regs). Have you got any more pics of your car? Love the wheels __________________

03-03-2008, 06:27 PM	#48
berz Zilvia Addict Join Date: Jul 2007 Location: sgv Posts: 862 Trader Rating: (0) Feedback Score: 0 reviews	cant have the best of both worlds so run stock piping man __________________

03-03-2008, 08:13 PM	#50
s13drob Zilvia Addict Join Date: Jan 2008 Location: socal Posts: 774 Trader Rating: (29) Feedback Score: 29 reviews	nice neighborhood. hahaha

03-04-2008, 07:13 AM	#51
bob marley Leaky Injector Join Date: Jan 2003 Location: Tampa, FL Posts: 128 Trader Rating: (0) Feedback Score: 0 reviews	I don't know if anyone has tried A'PEXi's active valve tail silencer. At idle and cruising around town it's very quiet. The engine noise usually drowns out the exhaust noise. At wide open throttle, it sounds like any other coffee can catback. I only know 1 person using it and we haven't noticed any power loss. http://www.apexi-usa.com/product_exh...=217&pageNum=1