[Jeff Alton]

I have done lots of searching here and on rennlist but need some help. Car is and 87 951 and has a low boost issue. It makes about 8psi max. Motor is stock.

Idle vacuum is about 16hg
Deccel vacuum is about 21-23hg
When I clamp the line to the wastgate I get 12 psi max.
BOV holds vacuum.


My searching tells me my wastegate is okay, is that right?

Where should I look next? Besides a cold motor stumble/hesitation the motor runs well (other than the lowish boost numbers). I have replaced a majority of the vacuum lines and tested the intake manifold gaskets for leaks.

Thanks for any insight....

Cheers