What The Hell Is This Noise??!?? - TriStateTuners.com :: Home of Tristate Auto Enthusiast

JET02WRX · 10-26-2007, 09:25 AM

Ok... I've had this noise that appears while holding constant medium throttle and the PSI's reach 5lbs. I had the noise even BEFORE my turbo swap, it just wasn't quite as loud as it is now, which makes me think its NOT an exhaust leak. Attached is a sound clip. It sounds like one of those high powered lawn sprinklers. Turn up your treble to hear it clearly and start listening at about the 5 second mark. I've tighted up things to spec a couple of times, but can't seem to figure out what it is. IS it an exhaust leak...or could it be something like the cat in my downpipe has become defective and the catalyst is flying around.

This was recorded with the windows up, using my Ipod laying in the floor, and trying to hold the boost at 5-6psi.

Link to sound

CHAOS · 10-26-2007, 09:27 AM

i can attest to this sound actually being there. lol

Honest_Bob · 10-26-2007, 10:22 AM

I hear it. How is the car running? Have you checked the egt, 02 sensor bungs?

JET02WRX · 10-26-2007, 10:40 AM

Car is running fine. And you know, thats 2 things I haven't checked are the EGT and front 02 bungs. I'll add that to the list of things to look at. Anyone have any other ideas?

JET02WRX · 10-26-2007, 10:51 AM

Andy even heard it when he tuned me and he wasn't sure what it was either. He said it wasn't revealing itself during the tune either. Its REALLY noticable sitting in the car. You'd think if it was an exhaust leak it would show up on logs or on the dyno or something. Thats what made me think its something else.

redwrxwagon02 · 10-26-2007, 11:30 AM

check the egt probe in your up pipe they like to break off and ruin turbos then check your exhuast manifold

DaveSTi · 10-26-2007, 11:31 AM

your car has caught the aids

2nd for checking your egt and inside your manifold.

JDMgoodness · 10-26-2007, 11:31 AM

odd... and your boost is steady?

D Money · 10-26-2007, 11:39 AM

I'm 100% it's an up pipe leak! Mine did it about a year after I did my up-pipe and vf34. It was like a high pitched thing, really wierd. Anyways, check that because im pretty sure thats it.

JET02WRX · 10-26-2007, 11:47 AM

Quote:

Originally Posted by redwrxwagon02

check the egt probe in your up pipe they like to break off and ruin turbos then check your exhuast manifold

No egt probe... its deleted. APS uppipe.

Quote:

Originally Posted by DaveSTi

your car has caught the aids

2nd for checking your egt and inside your manifold.

Haha...car aids...and what do you mean inside the manifold.... what do you think could be there issue there?

Quote:

Originally Posted by JDMgoodness

odd... and your boost is steady?

Yep... boost is steady, no weird fluctuations at all... and no problems hitting target boost.

JET02WRX · 10-26-2007, 11:50 AM

Quote:

Originally Posted by subwrxkid

I'm 100% it's an up pipe leak! Mine did it about a year after I did my up-pipe and vf34. It was like a high pitched thing, really wierd. Anyways, check that because im pretty sure thats it.

D, where exactly on the uppipe was it leaking and what did you do to correct it? Just replace gaskets and reinstall?

Honest_Bob · 10-26-2007, 11:53 AM

Does the upipe have a flex pipe? Those like to go.

D Money · 10-26-2007, 12:01 PM

Quote:

Originally Posted by JET02WRX

D, where exactly on the uppipe was it leaking and what did you do to correct it? Just replace gaskets and reinstall?

I let it go for a little bit because it was right around the time I switched to the 18g. I would just uninstall it and re-install it with new gaskets and see if that works. It's when you are in boost only, correct?

JET02WRX · 10-26-2007, 12:10 PM

Quote:

Originally Posted by subwrxkid

I let it go for a little bit because it was right around the time I switched to the 18g. I would just uninstall it and re-install it with new gaskets and see if that works. It's when you are in boost only, correct?

Yep only in boost...always right after I hit 5psi. Noise starts tapering off at 7psi.

Ben, the APS is a flex... and you know, I didn't actually test the flex section for a leak... DAMNIT.
Heres a question... if its been leaking for a long time...shouldn't the area near the leak be sooty from the exhaust?

JDMgoodness · 10-26-2007, 12:48 PM

Heres a question... if its been leaking for a long time...shouldn't the area near the leak be sooty from the exhaust?

Yes, you should see some carbon build up. I would start looking for that.. its strange that you had the noise with two different turbos.

RyanG · 10-26-2007, 12:49 PM

wtf are you guys hearing?? all I hear is an exhaust and a 4eat :P

JET02WRX · 10-26-2007, 12:51 PM

Quote:

Originally Posted by JDMgoodness

Yes, you should see some carbon build up. I would start looking for that.. its strange that you had the noise with two different turbos.

THATS what I thought was weird.

JET02WRX · 10-26-2007, 12:53 PM

Quote:

Originally Posted by AREA1320

wtf are you guys hearing?? all I hear is an exhaust and a 4eat :P

Haha....

You have to boost up the treble on your speakers and crank it up... a couple seconds in , you can hear whats sounds like a garden sprinkler... making a psht psht psht noise really fast...

DaveSTi · 10-26-2007, 04:19 PM

Quote:

Originally Posted by AREA1320

wtf are you guys hearing?? all I hear is an exhaust and a 4eat :P

i dunno, i just wanted to use the car aids line.

redwrxwagon02 · 10-26-2007, 04:42 PM

check and see if the plug in the UP for the EGT has fallen out i havent yet listened to the video but my car did that and it pissed me off

then i decided to do a swap

10-26-2007, 09:25 AM	#1
JET02WRX Tri-State Addict Join Date: Jun 2006 Location: Chester Co. Member #2133 My Ride: 2002 WRX Wagon iTrader: (1)	What The Hell Is This Noise??!?? Ok... I've had this noise that appears while holding constant medium throttle and the PSI's reach 5lbs. I had the noise even BEFORE my turbo swap, it just wasn't quite as loud as it is now, which makes me think its NOT an exhaust leak. Attached is a sound clip. It sounds like one of those high powered lawn sprinklers. Turn up your treble to hear it clearly and start listening at about the 5 second mark. I've tighted up things to spec a couple of times, but can't seem to figure out what it is. IS it an exhaust leak...or could it be something like the cat in my downpipe has become defective and the catalyst is flying around. This was recorded with the windows up, using my Ipod laying in the floor, and trying to hold the boost at 5-6psi. Link to sound __________________ 2002 WRX "Fun-Wagon" Last edited by JET02WRX; 10-26-2007 at 10:19 AM.

10-26-2007, 10:22 AM	#3
Honest_Bob TST Ruined My Life! Join Date: Dec 2005 Location: Easton, PA Member #1179 My Ride: 05 WRX Wagon iTrader: (2)	I hear it. How is the car running? Have you checked the egt, 02 sensor bungs? __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

10-26-2007, 10:40 AM	#4
JET02WRX Tri-State Addict Join Date: Jun 2006 Location: Chester Co. Member #2133 My Ride: 2002 WRX Wagon iTrader: (1)	Car is running fine. And you know, thats 2 things I haven't checked are the EGT and front 02 bungs. I'll add that to the list of things to look at. Anyone have any other ideas? __________________ 2002 WRX "Fun-Wagon"

10-26-2007, 10:51 AM	#5
JET02WRX Tri-State Addict Join Date: Jun 2006 Location: Chester Co. Member #2133 My Ride: 2002 WRX Wagon iTrader: (1)	Andy even heard it when he tuned me and he wasn't sure what it was either. He said it wasn't revealing itself during the tune either. Its REALLY noticable sitting in the car. You'd think if it was an exhaust leak it would show up on logs or on the dyno or something. Thats what made me think its something else. __________________ 2002 WRX "Fun-Wagon"

10-26-2007, 11:30 AM	#6
redwrxwagon02 Tri-State Post Whore Join Date: Mar 2007 Member #4044 iTrader: (0)	check the egt probe in your up pipe they like to break off and ruin turbos then check your exhuast manifold __________________ oh thanks!

10-26-2007, 09:27 AM	#2
CHAOS TST Ruined My Life! Banned Join Date: Jun 2006 Member #2120 My Ride: 1984 Cadillac Brougham iTrader: (1)	i can attest to this sound actually being there. lol

10-26-2007, 11:31 AM	#7
DaveSTi Tri-State Post Whore Join Date: Mar 2006 Location: Charlotte Member #1591 iTrader: (0)	your car has caught the aids 2nd for checking your egt and inside your manifold. __________________ Member Journals: To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. / To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. / To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. / To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. / To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures. / To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

10-26-2007, 11:31 AM	#8
JDMgoodness Tri-State Aficionado Join Date: May 2007 Location: Long Island NY Member #4637 My Ride: 02 WRX iTrader: (1)	odd... and your boost is steady? __________________ 02 WRX... ~300WHP Bolt ons JDM V7 6speed JDM V7 suspension

10-26-2007, 11:53 AM	#12
Honest_Bob TST Ruined My Life! Join Date: Dec 2005 Location: Easton, PA Member #1179 My Ride: 05 WRX Wagon iTrader: (2)	Does the upipe have a flex pipe? Those like to go. __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

10-26-2007, 12:48 PM	#15
JDMgoodness Tri-State Aficionado Join Date: May 2007 Location: Long Island NY Member #4637 My Ride: 02 WRX iTrader: (1)	Heres a question... if its been leaking for a long time...shouldn't the area near the leak be sooty from the exhaust? Yes, you should see some carbon build up. I would start looking for that.. its strange that you had the noise with two different turbos. __________________ 02 WRX... ~300WHP Bolt ons JDM V7 6speed JDM V7 suspension

10-26-2007, 12:49 PM	#16
RyanG Tri-State Post Whore Join Date: Jan 2005 Location: Easton, PA Member #63 iTrader: (1)	wtf are you guys hearing?? all I hear is an exhaust and a 4eat :P __________________ I am Area1320 To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

10-26-2007, 04:42 PM	#20
redwrxwagon02 Tri-State Post Whore Join Date: Mar 2007 Member #4044 iTrader: (0)	check and see if the plug in the UP for the EGT has fallen out i havent yet listened to the video but my car did that and it pissed me off then i decided to do a swap __________________ oh thanks!

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