Ever since i put the blower and cam in my truck I've been having problems with the idle when i have either the heat or air conditioning on. The rpms drop pretty low and then pop back up and repeat over and over and it makes driving it on a hot day pretty frustrating so i stopped using the AC. But with the temps getting hotter i dont think i can deal with it much longer.

This problem is just at idle and is fine when i start going. And it drives fine with no AC on. Also when i first turn the ac on a little bit it doesnt start to idle funny right away but as soon as the efans come on it starts to go crazy.

It's a 2004 5.3L with a whipple and 216/224 .551/.551 on 115LSA

Any help?

 

Do you have your own tuning program? If you are paying Horsepower Solutions to tune it, they don't need our help.

 

It's the pull of the A/C compressor and/or e-fans doing it. There are several tables in tuning to play with to help. Things that are real detailed and take time to play with that I would find a tuning shop not doing unless they are extra particular. IDLE air flow I think is the big one. There are also tq tweaks for the A/C compressor and e-fans. Over the years I've found that the adaptive idle learning goes a long way helping also.

 

Yeah they played around with it for a little bit. I was just looking for some points that i might mention next time i bring it in.