Reviewed By jacob d (San Antonio, TX) Reviewed for a 2001 GMC Sierra —9/11/2011 5:43 PM
The bully dog gt is well worth the money can't beat it the performance was amazing all I got to say get it
Reviewed By James B (Colorado Springs, CO) Reviewed for a 2001 GMC Sierra —2/27/2009 8:42 PM
I purchased this programmer along with a K&N FIPK Air Intake and my truck is like a rocket! Huge difference in power. I'm trying to lay off the gas so I can check my mileage, but havent't been able to yet!!!