My '08 Hemi seems to idle low but I can't remember if it always has lol. It idles in at 500 rpm's. I have a Diablo Trinity but I've never touched anything but the tunes, tire change, and throttle responses. I just asked a buddy that works at Dodge the other day that they can find water marks if they run my truck for anything. He said Diablo says it won't void warrenty but they can find out I've tuned it. No lifetime powertrain for me now. Hoping for a easy fix it the idles I deed too low.

 

Mine is at 600 I think

 

My 03 Hemi when warm and I pulll up at a light, can and does sometimes idle at 500. But, If I put the AC on or blower or anything electrical that causes a "load" such as window operation, the idle jumps imediately to 650 rpm and stays there. Done this since the day I brought him home.
Al.

 

Mine used to idle between 500 and 600 but after I tuned it and grounded my TB it stays at a rock steady 650. Try the TB ground.

 

The idle doesn't bother me, but it just seemed low. Thanks, I'll just rock the low idle hemi growl lol. Most all my rides idle 1,000 range, my drag truck even higher lol.

 

At temp it was 500rpm idle and 600rpm with the ac on. Now with custom tune it is 725rpm

 

Yeah i think mine is idled down to 550 or so but its also custom tuned. I lime to hear the lope from my cam

 

Hoping to go down to 500-475rpm in P/N for some light dimming entertainment.

 

500-600 is about what I have noticed in mine.