You guessed it!! I need help. 09 G8 GT cold start up idle issue

[Firechicken5.3]

2009.5 Pontiac G8 GT 6.0 L76 6L80E
DoD delete LS9 Cam
LS7 Maf with 4"tube
Vararam Intake
Pypes Mufflers

G8 4.0 14.13 Stoich LS7 MAF+timing+LS9 cam PE 12.5afr.hpt9-3-17 cold start issue.hpl9-7-17 cold start issue.hplG8 4.0 14.13 Stoich LS7 MAF+timing+LS9 cam PE 12.5afr.hpt9-3-17 cold start issue.hpl9-7-17 cold start issue.hpl

So, I have not really had an issue with this tune all year but now I'm having an initial idle issue until CL enables. I have not changed anything that affects idle since my cam swap. I tried messing with the open loop EQ ratio and IVT gains but it didn't make a difference. The problem is only noticeable on a cold start.

[sixt9stang]

I am still learning so take this with a grain of salt. It looks like you have the stock values in the Base Running Airflow. You may want to work on that and also the Startup airflow table. I am working on an idle issue right now myself but I am working on my VE tune.

Have you went through this thread: https://www.hptuners.com/forum/showt...e-tuning-guide

[jsllc]

After just taking a quick look there are several thing regarding startup airflow most likely causing issues and an idle of 550 is mos likely to low for an ls9 cam. More like 650-700 would be better. Base idle air is a little low and startup air is off. All of you follower has been adjusted maybe a little too much. These are just some quick observations.