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Yep, Dual chain. It is doing the same as yours! Thanks.

Here is the tune. Thanks!

As far as I know. Car had no issues until the cam swap.

Hey Guys,
I have a 2006 GTO with a 234/242 .600 lift cam. It idles and runs great. Only issue is it won't start up on first crank at times but will start immediately on 2nd try. Almost like a bad...