A tip about tuning at idle.
DO NOT TRUST YOUR WIDE BAND.
Wide band readings at idle are typically thrown off and can read more rich or lean depending on your cam.
The correct way to set the idle is to disconnect the IAC, Tape off or otherwise block the holes in the throttle body that go to the IAC.
Set the idle you want using the screw on the throttle body blades to get it close.
Make it leaner and leaner until you get an RPM drop. Then make it slightly richer.
Remove the tape over the holes on the throttle body and reconnect the IAC
That should get you where you need to be.
Do not look at your Wide Band as a guide.
DO NOT TRUST YOUR WIDE BAND.
Wide band readings at idle are typically thrown off and can read more rich or lean depending on your cam.
The correct way to set the idle is to disconnect the IAC, Tape off or otherwise block the holes in the throttle body that go to the IAC.
Set the idle you want using the screw on the throttle body blades to get it close.
Make it leaner and leaner until you get an RPM drop. Then make it slightly richer.
Remove the tape over the holes on the throttle body and reconnect the IAC
That should get you where you need to be.
Do not look at your Wide Band as a guide.