Problems in the positive boost
04-01-2004, 06:13 AM
#1
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Problems in the positive boost
Hey guys....
I just started having this new prob with the Rex and I was hoping someone could give a little insight....I have a 02 WRX with 63k. Vishnu DP, Sti Exaust, Samco I/C hoses and a ZeroSports Turbo Intake pipe. When I get on the throttle now I get a fluttering noice that almost sounds like a leak in the exuast system somewhere but my worries are that the turbo is going south....I can't notice any loss of power but it worries me anyways. Anyone experience something like this? Thanks!
I just started having this new prob with the Rex and I was hoping someone could give a little insight....I have a 02 WRX with 63k. Vishnu DP, Sti Exaust, Samco I/C hoses and a ZeroSports Turbo Intake pipe. When I get on the throttle now I get a fluttering noice that almost sounds like a leak in the exuast system somewhere but my worries are that the turbo is going south....I can't notice any loss of power but it worries me anyways. Anyone experience something like this? Thanks!
04-01-2004, 07:28 AM
#2
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Without hearing the sound I can only guess, but hear goes.
Does your boost fluctuate?
Yes, a little; check wastegate, wastegate actuator and BOV spring.
Yes, a lot; check vacum lines.
No, check for leaks in exhaust after turbo, and perhaps around intake and intercooler (not as likely thought)
Does your boost fluctuate?
Yes, a little; check wastegate, wastegate actuator and BOV spring.
Yes, a lot; check vacum lines.
No, check for leaks in exhaust after turbo, and perhaps around intake and intercooler (not as likely thought)
04-01-2004, 06:43 PM
#3
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If the boost is fluctuating I am having a hard time noticing...The gauge doesn't do anything funny...But I am gonna take it to a buddy that has a wrx also and a Hoist 
and check that stuff out that you said. Thanks for the quick response dr...That was great
and check that stuff out that you said. Thanks for the quick response dr...That was great
04-01-2004, 08:03 PM
#4
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sounds like a possible wastegate or bov problem to me. Are you still unning a stock BOV? Its rare but possible that the diaphraghm on the BOV has gone bad and is not opening all the way, causing it to make that fluttering noise you are hearing. Ask your buddy if he'll let you swap them and then test it to see if it still makes that noise.
Ken
Ken
04-07-2004, 01:06 PM
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Just as I suspected!!
Got it figured out....I blew out the left side exhaust manifold gasket a little bit and it is leakin there. I was noticing that the turbo didn't spool up quite as quickly... Found the leak and ordered the gaskets today...Thanks for all the help guys, I really appreciate it...
Ryan
Ryan
04-07-2004, 06:48 PM
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i have the same issue, but haven't figured it out yet. experiencing low boost. Also, the boost gauge flutters in low rpms, until it builds boost. only mod is an uppipe. you think it's the header exhaust gasket?
what was your max boost with your leak? funny thing is..no sounds.
what was your max boost with your leak? funny thing is..no sounds.
04-08-2004, 12:52 PM
#7
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I didn't get the fluctuating boost thing though, it just took longer for the turbo to spool up and it is louder than hell with the exhaust leak. Sounds like a vacuum line thing or the wastegate or BOV. This thread may be of help
https://www.i-club.com/forums/showth...ight=low+boost
Let us know how you make out....
https://www.i-club.com/forums/showth...ight=low+boost
Let us know how you make out....
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