I have a 93 with a greddy turbo, rx7 intercooler, bipes, dual exhaust etc. and I seem to be hitting 10psi then it looses boost after it hits that point under full throttle it will go down to about 6 maybe 7. I was wondering if you guys had any ideas. Thanks a million.

 

replace wastegate actuator or install helper spring. use search if you need info for either.

 

Yuppers -
Need to clamp down on the waste gate.......