Ive found very few helpful posts. Im looking to up the boost to probably 9, possibly 10 lbs on my Comptech (non aftercooled, soon to be aftercooled) and was wondering what size throttle body would be most efficient/effective for the SC. I see 3 sizes on Evasive's site - 70, 72 and 74mm. Does size really matter? When is it TOO big? (I kno theres a joke in there somewhere) At what size does the maf sensor need to be upgraded, if at all??

Thanks.

 

70 it's good

 

from using the search function i was able to find that the max you can port the intake manifold without cutting into coolant passages is 68mm.if you are not planning on porting the intake manifold you will need a taper port.you need something like this http://www.scienceofspeed.com/products/exh..._throttle_body/

 

after reading about porting the im and tb i am working planning on doing the porting myself.sos says they made 12hp,im sure with a ported 70mm to 68mm tb and 68mm im i should make 12+ and im running twice the amount of boost.

 

SWEET!! Nice suggestion/reference!! Appreciate it.

 

Hmm, would the car need to be retuned to notice those 12hp? If I simply threw this on my untuned 7psi CTSC, think it'd be worth it?

 

you would need more fuel

 

Reallly? Maybe I'll wait for my smaller pulley then put it all together since I gotta get bigger injectors at that point anyway.

 

rich get yourself some 750+cc injectors and get the 3.0 pulley for the blower.of course you will need a emu to control the injectors get a tune and be forever done with the car.

 

Thas exactly my plan actually, lol, foreal. Thanks! Wish I could push 400 but oh well.

I was lookin into injectors and its been a long time since my automotive classes so do I need the peak and hold or the other ones?? Or.....which ones??