i have a 2000 z28 with the ls1 has cold air intake and opened up 3" exhaust all the way through and no cats. i just purchased an 87mm ported ls6 throttle body. did i make the right decision or what do you guys think i should have of done? how much horsepower should this add if any.
thanks

 

Did you get it running right? Ported throttle bodies are always worth a couple HP.

-Geoff

 

yeah i did i got a spacer kit for the o2 sensors and new o2 sensors. and i ordered a ported maf sensors ends. so when it all gets to me ill throw them on and see how much better it runs. thanks for all your help! and i wanted to go with the 90/90 set up but idk the 87mm set should be fine though