exhaust whistling...

kchu221 · 01-07-2012, 03:33 AM

hey guys, so i have the amuse r1 extra titan exhaust and the amuse r1 front pipe, but during lower rpm's or after i rev it a little and the rpms are going down, theres a really annoying whistling sound coming from my front pipes, does anyone know if the sound if normal or did i get a defective y pipe..? my installer also confirmed that the whistling was coming from my y pipes, but i wanted to ask you guys first before i assume anything... the reason im asking here is cuz theres only 2 amuse exhausts in the us for G37 which is me and another guy on the other side of the country but doesnt have the same setup as me, so i dont think ill even get any answers on that forum...

TonyBPD · 01-07-2012, 09:24 AM

Are you running high flow cats or test pipes?

kchu221 · 01-07-2012, 10:06 AM

yea im running mxp double resonated test pipes! but i know forsure the whistling not coming from there cuz my installer was checking for sounds and it was coming from the y pipe...

TonyBPD · 01-07-2012, 10:23 AM

I was running the Ark cat back on my car and once I switched over to test pipes (Motordyne) I got a terrible whistle.....It was to the point where I hated driving the car.

I then installed the Fast Intentions cat back and it was fine. The whistle was coming from the x-pipe portion of the Ark exhaust.

kchu221 · 01-07-2012, 10:36 AM

yea im actually thinking about installing my stock cats back on and see if the sound still exists... if it does, its definately the y pipe forsure...

SPOHN · 01-07-2012, 12:42 PM

I would lean towards the resonated TP or a small leak somewhere. I can't remember but does the Y pipe have flex built into it?

kchu221 · 01-09-2012, 02:41 AM

my installer said its forsure coming from the y pipe, and i didnt see any leak anywhere...

corbin09 · 01-10-2012, 10:59 AM

It is the Flex-pipes... they will make a whistling sound. I was told there is nothing we can do about it.

kchu221 · 01-10-2012, 11:46 AM

ohh really? honestly i really think it shouldnt have that noise....

vividracing · 01-10-2012, 12:00 PM

Just because the installer is saying the sound is coming from the Y pipe doesn't mean that's the actual cause. It's basically just incompatibility between the exhausts. You can replace the Y pipe OR the test pipes, and get rid of the sound.

I'd keep the Amuse exhaust, and experiment with different test pipes.

01-07-2012, 03:33 AM	#1 (permalink)
kchu221 Enthusiast Member Join Date: Aug 2011 Location: torrance Posts: 391 Drives: 2012 BMW M3 E92 Rep Power: 14	exhaust whistling... hey guys, so i have the amuse r1 extra titan exhaust and the amuse r1 front pipe, but during lower rpm's or after i rev it a little and the rpms are going down, theres a really annoying whistling sound coming from my front pipes, does anyone know if the sound if normal or did i get a defective y pipe..? my installer also confirmed that the whistling was coming from my y pipes, but i wanted to ask you guys first before i assume anything... the reason im asking here is cuz theres only 2 amuse exhausts in the us for G37 which is me and another guy on the other side of the country but doesnt have the same setup as me, so i dont think ill even get any answers on that forum...

01-07-2012, 09:24 AM	#2 (permalink)
TonyBPD Track Member Join Date: May 2009 Location: South Jersey Posts: 614 Drives: 2012 VW Golf R Rep Power: 17	Are you running high flow cats or test pipes? __________________ Fast Intentions-Stillen-Avant Garde-UpRev-319hp/265tq- Gone but will never be forgotten

01-07-2012, 10:23 AM	#4 (permalink)
TonyBPD Track Member Join Date: May 2009 Location: South Jersey Posts: 614 Drives: 2012 VW Golf R Rep Power: 17	I was running the Ark cat back on my car and once I switched over to test pipes (Motordyne) I got a terrible whistle.....It was to the point where I hated driving the car. I then installed the Fast Intentions cat back and it was fine. The whistle was coming from the x-pipe portion of the Ark exhaust. __________________ Fast Intentions-Stillen-Avant Garde-UpRev-319hp/265tq- Gone but will never be forgotten

01-07-2012, 12:42 PM	#6 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 45 Posts: 14,844 Drives: Waiting on next Z Rep Power: 221	I would lean towards the resonated TP or a small leak somewhere. I can't remember but does the Y pipe have flex built into it? __________________

01-10-2012, 12:00 PM	#10 (permalink)
vividracing The370Z.com Sponsor Join Date: Jun 2009 Location: Gilbert, AZ Age: 38 Posts: 7,306 Drives: 350Z,370Z,GTR Rep Power: 39	Just because the installer is saying the sound is coming from the Y pipe doesn't mean that's the actual cause. It's basically just incompatibility between the exhausts. You can replace the Y pipe OR the test pipes, and get rid of the sound. I'd keep the Amuse exhaust, and experiment with different test pipes. __________________ Rocky @ Vivid ♦ 480.966.3040 x236 ♦ Rocky@vividracing.com Email, PM, or call me directly for aggressive The370Z.com member pricing!!!

01-07-2012, 10:06 AM	#3 (permalink)
kchu221 Enthusiast Member Join Date: Aug 2011 Location: torrance Posts: 391 Drives: 2012 BMW M3 E92 Rep Power: 14	yea im running mxp double resonated test pipes! but i know forsure the whistling not coming from there cuz my installer was checking for sounds and it was coming from the y pipe...

01-07-2012, 10:36 AM	#5 (permalink)
kchu221 Enthusiast Member Join Date: Aug 2011 Location: torrance Posts: 391 Drives: 2012 BMW M3 E92 Rep Power: 14	yea im actually thinking about installing my stock cats back on and see if the sound still exists... if it does, its definately the y pipe forsure...

01-09-2012, 02:41 AM	#7 (permalink)
kchu221 Enthusiast Member Join Date: Aug 2011 Location: torrance Posts: 391 Drives: 2012 BMW M3 E92 Rep Power: 14	my installer said its forsure coming from the y pipe, and i didnt see any leak anywhere...

01-10-2012, 10:59 AM	#8 (permalink)
corbin09 Track Member Join Date: Jun 2009 Location: Dallas tx Posts: 665 Drives: 370z Rep Power: 280	It is the Flex-pipes... they will make a whistling sound. I was told there is nothing we can do about it.

01-10-2012, 11:46 AM	#9 (permalink)
kchu221 Enthusiast Member Join Date: Aug 2011 Location: torrance Posts: 391 Drives: 2012 BMW M3 E92 Rep Power: 14	ohh really? honestly i really think it shouldnt have that noise....

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