Reviewed By Matty F (NEWTOWN, CT) Reviewed for a 2009 Chevy Silverado —3/4/2015 2:56 PM
I used the 87 Octane tune, shut off AFM, and set the tranny to Firm setting. Everything worked as set. I found that the shifting from first to second was a little harsh so I emailed Mike at Diablotiune and he set me up with a custom tune for the tranyy. Great customer service!