Reviewed By Charles R C (WATERFORD, MI) Reviewed for a 2008 Chevy Impala —11/10/2014 5:07 PM
I installed this very easily. The tune is noticeable and makes spirited driving more fun.
Reviewed By kenneth c (EAST BOSTON, MA) Reviewed for a 2009 Chevy Impala —6/3/2013 11:10 PM
I was most impressed by how fast it tunes your vehicle and goes back to stock in a matter of 4 minutes I mainly purchased it to eliminate my DOD it works I used the 91 octane tune and removed my speed limiter I tried both firm and hard shift mode which makes a big difference but I use normal shift because there are stories about my transmissions reliability my gas mileage is crappy with or without DOD it always says avg milage is 18.9