Hey all! I have a 99' civic si with intake/header/test pipe/exhaust. I have also done better wires/plugs, pulleys, and a venom 400 (yes it does help alot). My question is would getting a apexi vafc piggyback unit be worth the money for the performance obtained? Also, on a completely different note, what kind of fly wheel hp numbers can i expect with what I have already done? thanks for the imput!!

 

There isn't much of a need for extra fuel with your setup. Throw in some cams and then you will need some fuel tuning.

And I would really like to see before and after dyno charts that prove the Venom 400 does anything but kill gas mileage. :eh:

 

exactly