Is my wastegate shot?

[OmgAwd]

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]

Why do you think its shot? Sounds like its functioning perfectly to me.

[OmgAwd]

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]

Originally Posted by OmgAwd

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]

If you changed the stock exhaust or intake system piping, then it will make more boost than stock.

[FattyBoomBatty]

The stock gauge guesses anyway.

[OmgAwd]

Originally Posted by At-Least-It's-An-Evo

Uh... did you make the numbers up?

What?

[OmgAwd]

Originally Posted by ecoli

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]

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]

Get a real boost gauge before you make any more assumptions.. The stock gauge does nothing for you.

[OmgAwd]

I know that the stock boost gauge does nothing. I stated that.

[OmgAwd]

Originally Posted by ecoli

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.