i jsut installed a powerdyne supercharger and at about 3000rpm the car studders what do you guys think this could be? i hooked up an FMU and it is still doin it..thanks STeve

 

probably not enough fuel. (stop driving it!!!)

what car, what engine, what's the rest of your setup?

 

it is only putting out 5psi so it really shouldnt need a different fuel pump or anything... 19 lbs injectors should be more than enough

 

you should get a bigger fuel pump. 24 lb injectors wouldn't hurt either.

 

Did you buy this kit new or used?
The new kit comes with a bigger fuel pump so what do you think??? We need to know what your combination is really.
Know matter what though, you should use at least 24# injectors even for a stock motor with and a minimum of a 155lph pump.
Type in what you have for the best possible advice.

Rye