Howdy everyone! First, let me say that I am fairly new to tuning and I'm trying to learn so I don't a firm understanding on everything.
Anyways, I just finished having the car tuned by a very reputable LS shop through email and HP tuners. It took over 20 datalogs and tune revisions but the tuner finally said he thought it looked good. I told him I'm still having some drivability issues but he said he the tune still looks good and that he can't see any problems. I understand that it makes it hard to fix through email and I don't want to put a bad name on the shop because they did have good customer service. So I'm just trying to sort out my issue
My main issue is a hanging idle. With the clutch in and coasting my rpms fall very, very slowly from 2000 to around 1100 then it remains there for about 8-10 seconds before returning to 825 target idle. Occasionally, it will hang at 2000 for a couple seconds, then hang at around 1600 for another couple seconds, and then fall to 1100 again. It seems to do it even more when cold. Also, when driving between 1400-2200rpm when I let off the throttle the car will continue and maintain speed for a couple seconds before you can feel the throttle close and the car start to decelerate. I tried lowering the Throttle follower values a little bit but it didn't seem to help much, maybe I need to move them more. I did try pulling some air from the base airflow tables but it worries me because based off other tunes I've seen from people with the same mods I'm already a bit lower in value on my airflow tables then them and I would obviously like the car to be as quick as I can get it. Nor do I want to mess up the idle by pulling too much air.
The car also does not buck at all, even at 1000rpms which to my understanding this cam should buck harder than PBR champion. That makes me think the airflow is jacked somewhere either in the follower tables or the base airflow.
Mods are: CAI, TSP 2" Longtube Headers w/ offroad extensions, TSP F-35 cam 235/248 .649"/615" 111 LSA, 109.5 ICL.
2010 LS3, F35 Cam, Headers, etc.hpt
This is the tune before I made any changes. It is exactly how it came from the tuner.
Thanks for any help!