Wastegate Chatter With Meth

brantdw · 10-25-2009, 06:44 PM

Im a lost on a reason for this chatter. When I floor the car with the meth on in a high gear I get this chatter untill the revs are up high. Dosent seem to hesitate just a blow of valve type chatter. Im running the Perrin PW1 system.

Any suggestion on what this is? I have an adjustable BOV that vents either to ATM or back into the intake. Should this be adjusted differently?

Thanks.

-B

Team Scream · 11-03-2009, 09:42 PM

Maybe you are over boosting and the bpv is losing it's mind?
Are you tuned to use the meth?
Have you logged WGDC and manifold relative pressure (direct)?
When these events occur what does your boost gauge say?
When these events occur what does your wideband gauge say?

These are all questions you should have answers for before you go any further no?

10-25-2009, 06:44 PM	#1
brantdw Scooby Newbie Member#: 52819 Join Date: Jan 2004 Vehicle: 2002 wrx blu	Wastegate Chatter With Meth Im a lost on a reason for this chatter. When I floor the car with the meth on in a high gear I get this chatter untill the revs are up high. Dosent seem to hesitate just a blow of valve type chatter. Im running the Perrin PW1 system. Any suggestion on what this is? I have an adjustable BOV that vents either to ATM or back into the intake. Should this be adjusted differently? Thanks. -B

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11-03-2009, 09:42 PM	#2
Team Scream Scooby Specialist Member#: 121532 Join Date: Jul 2006 Chapter/Region: SCIC Location: So Cali Vehicle: 2006 WRX,Sti Swapped SGM	Maybe you are over boosting and the bpv is losing it's mind? Are you tuned to use the meth? Have you logged WGDC and manifold relative pressure (direct)? When these events occur what does your boost gauge say? When these events occur what does your wideband gauge say? These are all questions you should have answers for before you go any further no?