Need some help with a 06 GTO big cam.....

[JS1965]

I have the tune perfect except the cold start idle
It will roll for a sec or 2 until it finds itself,only in open loop

Can anyone help with this problem
Cam is a 232-234 XER 112 and this is a 6sp....

[MN C5]

Without seeing your tune ? No...

But I'd try logging your timing and see what its doing.