hi all i have this problem with my 93 rx7, most of the time is when i first start driving the car as soon as i start to hit boost it stumbles feels like power just shuts off for a sec. then goes away and after my gas pedal feels light and i when push the gas half way say like im going up a hill my boost gauge shows that im hitting 5-9 pounds but dont feel the power humm weird but need help wid this problem wonderin could it be the double throttle ....

 

list your mods at least to give us some things to work with, sounds like you maybe in LIMP mode or vacuum leak.

 

only have greddy power extreme exhaust

 

sounds like your have the same prob im haveing. are your throwing any codes?

 

no codes

 

A 3000 RPM hesitation is an often-experienced issue with these cars, but I don't think anyone has found a guaranteed solution for it while running the stock ECU (or chipped, or piggy-back). I tried grounding and other things that have been suggested over the years and it never went away. Then I installed a PowerFC and the car never did the 3000 RPM hesitation again. If it really irks you, the PowerFC or another stand-alone engine management solution seems to be a sure bet to fix the problem.

-Max