little Red Camaro

iTrader: (14)

I have a FAST 78 setup and having a hard time getting the car to idle. HP tuners is showing the FAST TB not closing all the way...showing 5% to 7% open at times. Anyone ever have this problem and if so, what did you do to fix it.

SweeTbone

iTrader: (8)

FAST TBs are notorious for sticking open. Hanging idle and all around sucktitude. There is a minority that have not had any problems, but most have. If you're dead set on using the FAST, you can purchase a stronger return spring and rig it up to your Throttle Body Arm to close it shut. Honestly, I would just get a new TB. I am unsure what will bolt to a 78MM though. If it were a FAST 90, I'd say go Nick Williams and never look back.

little Red Camaro

iTrader: (14)

I was told to trash the FAST TB and go back to stock TB. Probaly what I will do. Need to upgrade to a 90 setup!