does anyone no if the p75 actually flows more than the pr4?
ive heard of this but havent actually had anyone show any slight of proof

ive got both manifolds and when i switched from the p75 to pr4 my car was not any slower at all 14.8s before, 14.8s after
yes i know the differnce can be very miniscule but every bit counts i guess, i'll be boosting soon too, if that makes a diff

thanks to anyone that has some kinda input

 

there is no difference. just different location for smog sensors and such. all in all the same performance wise

 

thank u
that's what i hoped to hear,
in a way i like the pr4 one more anyway, with the pgm-fi label on it