OBX Y Pipe: Hiss on coast down???

RCZ · 04-08-2011, 03:29 PM

Get these exhaust tips, problem solved.

Jordo! · 04-08-2011, 04:11 PM

Hmm.

These repsponses are making me think it's just a characteristic of the pipe. I may be going back to the old Y pipe then.

Dammit.

GZ3 · 04-08-2011, 04:16 PM

Quote:

Originally Posted by Jordo!

Hmm.

These repsponses are making me think it's just a characteristic of the pipe. I may be going back to the old Y pipe then.

Dammit.

is it THAT loud?

Jordo! · 04-08-2011, 06:06 PM

I can hear it with the window up and AC on. I can hear it over the stereo unless it's cranked. So, yeah... a lot louder than I would like.

Monday we'll get it back on the lift to see if it's a leak or just a characteristic of the OBX Y pipe + S-tune CBE combo...

If so, I'll repair the old Y pipe (has a small, but inaudible, leak in the flex pipe) and this will be up for sale...

Jordo! · 04-12-2011, 10:29 PM

Okay, old Y pipe is back on, and problem solved.

Looks like going from the 3" outlet on the OBX pipe to the 2.5" of the rest of the CBE was causing the hiss.

Weird.

So... yeah, this is going up for sale shortly

If anyone wants to jump on it, feel free to PM me

Quote:

Originally Posted by 6spd

just a side question, why'd you switch out the y-pipe?

Mainly to avoid repairing the cracked Nismo one, which I wound up having done anyway... also, thought it couldn't hurt to try.

Screw it -- I'll cheerfully sacrifice a few whp to not hear that hiss again

6spd · 04-12-2011, 11:25 PM

right on

BLM · 04-13-2011, 10:00 AM

Quote:

Originally Posted by Jordo!

Okay, old Y pipe is back on, and problem solved.

Looks like going from the 3" outlet on the OBX pipe to the 2.5" of the rest of the CBE was causing the hiss.

Weird.

So... yeah, this is going up for sale shortly

If anyone wants to jump on it, feel free to PM me

Mainly to avoid repairing the cracked Nismo one, which I wound up having done anyway... also, thought it couldn't hurt to try.

Screw it -- I'll cheerfully sacrifice a few whp to not hear that hiss again

The GTM 3" exhaust hisses too. I think it's mostly a result of the VQ harmonincs when paired to a less restrictive exhaust. Some set-ups will hiss more/louder than others, but as soon as you remove or replace the OEM cat's you're going to have some degree of hissing

CATCHINZZZS · 05-03-2011, 06:41 PM

Did you have cats or non res TPS. is therest stock on the rear

04-08-2011, 04:11 PM	#17 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 417	Hmm. These repsponses are making me think it's just a characteristic of the pipe. I may be going back to the old Y pipe then. Dammit. __________________ Enjoy it. Destroy it.

04-08-2011, 06:06 PM	#19 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 417	I can hear it with the window up and AC on. I can hear it over the stereo unless it's cranked. So, yeah... a lot louder than I would like. Monday we'll get it back on the lift to see if it's a leak or just a characteristic of the OBX Y pipe + S-tune CBE combo... If so, I'll repair the old Y pipe (has a small, but inaudible, leak in the flex pipe) and this will be up for sale... __________________ Enjoy it. Destroy it. Last edited by Jordo!; 04-08-2011 at 06:10 PM.

04-12-2011, 11:25 PM	#21 (permalink)
6spd A True Z Fanatic Join Date: Aug 2009 Location: South Florida Posts: 3,001 Drives: Q50RS Rep Power: 24	right on __________________ -Jay- jonathanjamesphotographer.com

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04-08-2011, 03:29 PM	#16 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1118	Get these exhaust tips, problem solved.

05-03-2011, 06:41 PM	#23 (permalink)
CATCHINZZZS Base Member Join Date: Jan 2011 Location: NYC Posts: 221 Drives: 2010 370Z Rep Power: 14	Did you have cats or non res TPS. is therest stock on the rear