Purepower

iTrader: (1)

OK had 6 inch crank and 3.33 blower pulley got 5 psi 6 rib. swapped to 7 inch crank and 2.95 pulley 8 rib still only reads 5 psi ?????????????? :cry2:

91mgt

Maybe you have a bad gauge?

Purepower

iTrader: (1)

Ya I might

hotford

well 7inch crank and a 295 blower pulley you should see 13-15 if you have a anderson power pipe on it!thats at peak rpm!

THREE40SEVEN

Check for charge piping leaks, vacuum (boost) leaks at the intake manifold, and the bypass valve.. I've had some of the bosch units leak on me...
Grab another gauge to verify the boost level.
Is there any evidence of excessive belt slippage? (black rubber dust around the blower)
Matt

Purepower

iTrader: (1)

I'll look for the black Dust. Thanks for the tips