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-   -   Is my wastegate shot? (http://www.mitsustyle.com/forums/showthread.php?t=21532)

OmgAwd 12-01-2008 09:45 PM

Is my wastegate shot?
 
Today I tested the wastegate actuator on my 1G.
Results - 12.5psi it started to open and was fully open at 15.5psi.
Time for a new one?

Kracka 12-01-2008 09:52 PM

Re: Is my wastegate shot?
 
Why do you think its shot? Sounds like its functioning perfectly to me.

OmgAwd 12-02-2008 07:16 AM

Re: Is my wastegate shot?
 
It's supposed to open at 11 and it seems like I'm making way too much boost. I know I shouldn't trust the stock gauge but it keeps going past max. I'll get an aftermarket soon.

At-Least-It's-An-Evo 12-02-2008 07:27 AM

Re: Is my wastegate shot?
 
Quote:

Originally Posted by OmgAwd (Post 267086)
It's supposed to open at 11 and it seems like I'm making way too much boost. I know I shouldn't trust the stock gauge but it keeps going past max. I'll get an aftermarket soon.

Uh... did you make the numbers up?

Shane@DBPerformance 12-02-2008 09:51 AM

Re: Is my wastegate shot?
 
If you changed the stock exhaust or intake system piping, then it will make more boost than stock.

FattyBoomBatty 12-02-2008 11:00 AM

Re: Is my wastegate shot?
 
The stock gauge guesses anyway.

OmgAwd 12-02-2008 11:01 AM

Re: Is my wastegate shot?
 
Quote:

Originally Posted by At-Least-It's-An-Evo (Post 267087)
Uh... did you make the numbers up?

What?

OmgAwd 12-02-2008 11:02 AM

Re: Is my wastegate shot?
 
Quote:

Originally Posted by ecoli (Post 267095)
If you changed the stock exhaust or intake system piping, then it will make more boost than stock.

My exhaust and intake are not stock but I tested the wastegate actuator with it off the car on an air compressor!

Shane@DBPerformance 12-02-2008 12:35 PM

Re: Is my wastegate shot?
 
A wastegate on a car under boost will open earlier than it will on the bench do to backpressure pushing the flapper open. The backpressure essentially makes it act like a weaker spring.

When you put aftermarket exhaust on a DSM it makes the car run more boost, sometimes to the point of uncontrollable boost creep.

4g63tcrazy 12-02-2008 01:10 PM

Re: Is my wastegate shot?
 
Get a real boost gauge before you make any more assumptions.. The stock gauge does nothing for you.

OmgAwd 12-02-2008 03:53 PM

Re: Is my wastegate shot?
 
I know that the stock boost gauge does nothing. I stated that.

OmgAwd 12-02-2008 03:56 PM

Re: Is my wastegate shot?
 
Quote:

Originally Posted by ecoli (Post 267125)
A wastegate on a car under boost will open earlier than it will on the bench do to backpressure pushing the flapper open. The backpressure essentially makes it act like a weaker spring.

When you put aftermarket exhaust on a DSM it makes the car run more boost, sometimes to the point of uncontrollable boost creep.

Thanks.

I'm picking up a boost gauge tomorrow.


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