FIXED RASPY Exhasut today !

levani041491 · 12-03-2013, 01:24 AM

I have OBX test pipes , Y pipe and topspeed PRO1 exhasut , car was very raspy from 2500 to 3500 rpms . I took to my shop today and FIXED it !!!

tried few things
STOCK cats + OBX Y pipe+Pro-1 exhaust = RASP almost same
Test pipes + OBX Y-pipe + stock exhaust = RASpy

Test Pipes + stock Y pipe + Pro-1 exhaust = NO rasp at all NO hissing on deceleration

all the hissing was coming from the flexpipes on the Y pipe . I know stock Y pipe is small but 2.5 test pipes gos into 2" Ypipe and then comes out into 3" exhaust so it cant be so restrictive , it will actually increase velocity

RyanWest · 12-03-2013, 02:11 AM

can you post a HD audio clip?

Jordo! · 12-03-2013, 03:26 AM

Quote:

Originally Posted by levani041491

I have OBX test pipes , Y pipe and topspeed PRO1 exhasut , car was very raspy from 2500 to 3500 rpms . I took to my shop today and FIXED it !!!

tried few things
STOCK cats + OBX Y pipe+Pro-1 exhaust = RASP almost same
Test pipes + OBX Y-pipe + stock exhaust = RASpy

Test Pipes + stock Y pipe + Pro-1 exhaust = NO rasp at all NO hissing on deceleration

all the hissing was coming from the flexpipes on the Y pipe . I know stock Y pipe is small but 2.5 test pipes gos into 2" Ypipe and then comes out into 3" exhaust so it cant be so restrictive , it will actually increase velocity

Yep. I had same problem -- went back to factory diameter Y-pipe.

I'm surprised you aren't getting a rasp from unresonated TP's tho'...

levani041491 · 12-03-2013, 01:22 PM

Ill get a camera tonight and post everything ! No i only hear exhaust tone from back of the car NOT UNDER MY f***king feet . car rides nice and confy

it worth 2.5HP after all

wheee! · 12-03-2013, 02:02 PM

Factory Y pipe goes down to 1.5" almost...

Super Werty · 12-03-2013, 02:16 PM

you are basically putting a bottleneck in your exhaust that way...

12-03-2013, 01:24 AM	#1 (permalink)
levani041491 Base Member Join Date: Sep 2013 Location: Long Island NY Posts: 34 Drives: 2012 G37s Coupe Rep Power: 12	FIXED RASPY Exhasut today ! I have OBX test pipes , Y pipe and topspeed PRO1 exhasut , car was very raspy from 2500 to 3500 rpms . I took to my shop today and FIXED it !!! tried few things STOCK cats + OBX Y pipe+Pro-1 exhaust = RASP almost same Test pipes + OBX Y-pipe + stock exhaust = RASpy Test Pipes + stock Y pipe + Pro-1 exhaust = NO rasp at all NO hissing on deceleration all the hissing was coming from the flexpipes on the Y pipe . I know stock Y pipe is small but 2.5 test pipes gos into 2" Ypipe and then comes out into 3" exhaust so it cant be so restrictive , it will actually increase velocity

12-03-2013, 02:02 PM	#5 (permalink)
wheee! A True Z Fanatic Join Date: Sep 2009 Location: Mod Capital of Canada Age: 58 Posts: 7,354 Drives: cars. lots of cars. Rep Power: 40182	Factory Y pipe goes down to 1.5" almost... __________________ H&R / Stillen / Berk / HKS / Swift / Michelin / UpRev / SPC / Amuse Rep / Seibon / Fringe XVO / TWM / more... My Journal

12-03-2013, 02:16 PM	#6 (permalink)
Super Werty Track Member Join Date: Jul 2013 Location: AZ Posts: 668 Drives: '13 Sport Rep Power: 13	you are basically putting a bottleneck in your exhaust that way... luigi90210 likes this. __________________ The Build

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12-03-2013, 02:11 AM	#2 (permalink)
RyanWest Track Member Join Date: Jan 2012 Location: Tamp, Fl Posts: 714 Drives: 2009 Nissan Rep Power: 33	can you post a HD audio clip?

12-03-2013, 01:22 PM	#4 (permalink)
levani041491 Base Member Join Date: Sep 2013 Location: Long Island NY Posts: 34 Drives: 2012 G37s Coupe Rep Power: 12	Ill get a camera tonight and post everything ! No i only hear exhaust tone from back of the car NOT UNDER MY f***king feet . car rides nice and confy it worth 2.5HP after all