Reviewed By William M (Fair Oaks, CA) Reviewed for a
—8/18/2015 10:30 PM
Immense improvement in performance on initial tune. I am really quite pleased.
Reviewed By Mike P (MAUMEE, OH) Reviewed for a
—8/14/2011 6:17 PM
my 2003 yukon xl 6.0 has good gas milage with a lot more pick up combind with a jet mass air flow sensor and magnaflow exhaust system. anything auto was less than anyone else
Reviewed By Artie M (Eden, NC) Reviewed for a
—4/17/2018 1:58 AM
Does what it's supposed to do.