How to set IAC on 500hp Ultimate system ?

#1 · August 26, 2019, 3:32 pm

'05 LM7 5.3L w/BTR Stage II truck cam & 4L60e trans in a '67 Camaro. Installed Fitech Ultimate 70002 system

Just got this running this past weekend.

Has a stumble off idle and also shuts down when placed in Park. Suspect I have to adjust IAC ??? Where can I find this setting in the Handheld ??

My 1st attempt at an LS swap...

Uploaded files:

JamieBurch has reacted to this post.

#2 · August 29, 2019, 2:39 pm

Pretty much got rid of the off idle stumble by increasing Accl Pump settings.

But still shuts down/stalls when put into park. And I can't get the IAC below mid 50s.

Any suggestions ???????????????

Fitech EFi Tuning Forum