Mizz96Z28

I just put on a set of Dynatech long tube headers and also had PCMforless reprogram my computer and with just open headers if I push in the clutch or put it in neutral the car will rev to about 2000 RPMS. I'm in the process of completing the exhaust today and just want to know will that go away when the rest of the exhaust is finished or is something else wrong? Is it due to the lack of backpressure or is it the O2's sensors in the collectors being so close to the outside atmosphere? Thanks

Myles

Mizz96Z28

TTT

Gripenfelter

Try lubricating your throttlebody assembly.

Namely the spring on the driver's side underneath the cable cover.

Also use some brake cleaner or throttlebody cleaner to clean your IAC and throttlebody. Make sure the IAC is plugged in snug.