TB and PCM

[cjmeyers]

okay so i searched for awhile but couldn't find what i was looking for in an answer... i am wondering how much of a gain i can expect to see if i already have a 3 piece CAI, flowmaster 80 series, hi flow cat, 2.5 exhaust and i were to order a tuned pcm from mp racing along with the 65mm TB...

[stewartfn20]

i dynoed at 165 to the wheels with pretty much the same mods. so figure about 40 percent power loss and i think im around 195-200 off the block.

[lvemy3100]

i dynoed at 165 to the wheels with pretty much the same mods. so figure about 40 percent power loss and i think im around 195-200 off the block.

with 20% drivetrain loss 165hp at the tires is about 206.25 at the flywheel... so about 31.25hp gain over stock.. if you figure 25% loss you are looking at around 220.25hp at the flywheel or 45.25 over stock..

so based on the info provided by stewartfn20 realistically you are looking at anywhere from 30-45hp gain depending on what the exact drivetrain loss is for his car...

I have a real hard time believing he has a 40% loss as it would put him at about 275hp at the flywheel... lol

[cjmeyers]

what if i were to just do the pcm for the time being and get the 65mm TB next winter when i put a supercharger on...

[stewartfn20]

yea sry, i guess i over exaggerated. but spruce over on GAGT told me that there is no difference with the 65 and the amount of mods i have, i have to dissagree with that. as far as just getting the tune, you will notice a difference. i highly recommend mp racing for both the tune and throttle body.