well im running my 950cc secondaries and i have heard that you can expect a little stumble when they come on at 4k. i can guess to say that, that is true, but how bad is that? im running around 10psi daily then higher when i am at the track. did i screw myself with these? because i see peope with 1600cc and i dont see how they just dont drown in gasoline. That and the car isnt running yet otehrwise i would just go and find out.

 

Just retune your Greddy emanage.

 

alright, that makes sense. there was no statement of "stock ECU" in the posts i was reading. thanks.