Question for anyone...
Installed the 91 octane performance tune last nite, not much difference from towing tune. Did notice today that the engine temp is up a little, is this normal? Also noticed a slight amount of exhaust smoke when I stepped down hard at 50MPH. Is this because of the richer A/F ratios? Should this clear up after a 100 miles and a couple of key cycles?

Thanks for any info.

 

What color was the exhaust smoke?

I'm pretty sure the towing performance tune has a richer air/fuel ratio than the performance tune.

 

Smoke was white and only lasted a few seconds.