Am I missing something?

[CAMARO416]

421CI Stroker
251/264 .629 .611 112lsa cam
P01 ECU
Built 4l80e
102TB
LS3 Heads

This truck has a few problems I thought I'd reach out for help with. 1 is I can't get the thing to idle when in gear. I know this topic has been touched 100+ times before but the normal approach is not working. I got it to start up without the gas pedal and idles decent however soon as I put in reverse it stalls. I am beginning to think this cam is part of the problem. I had it in a another car with a e83 ecu and getting it to idle was a nightmare. I attached a log and the tune.

[mbray01]

What 102 throttle body? Ill be honest here, most aftermarket throttle bodies do not have enough iac port to allow that engine to idle properly, you can dump tons of timing into it at idle, but that will likely give you an unstable idle, as timing correction will suffer. You are likely going to need to get the throttle blade open more, which may require modifying the tps, so it reads the correct voltage, or, (im gonna catch hell for saying this) but you may have to knock a small hole in the throttle body blade

one other thing to mention here, make sure your fueling is good, too rich or too lean will give you fits as well

"EDIT" I DID NOT LOOK AT THE FILE OR LOG, JUST GIVING ADVISE FROM MY EXPERIENCE WITH SIMILAR SETUPS

[Ben Charles]

Very solid information, All of it

[CAMARO416]

It's a FAST throttle body with nitrous outlet plate. Sucks to have to drill it out but I'll try that to see how it goes.

[blindsquirrel]

Drilling is not a big deal if you need to reverse it later, just plug it with lead shot. If you put the hole in the right place you can simply squeeze the shot flat with pliers without removing the TB.

[Ben Charles]

See where TPS volts is... can most likely crack the blade honeslty and reset TPS/iac..

I would also Open Loop tune that size cam and see what fuel it likes most

[CAMARO416]

Drilled a little hole in the throttle body and it started perfectly with no throttle and didn't hesitate when put into gear. Thanks for the help guys!