Well took my second trip to proven power on Friday this time with my 03 cobra .. we were having some problems blowing the spark out ,soo we needed to check and re-gap plugs Darrell and the guys were more than willing to help loan tools and such , and even let me use up a favor lol and run over on some dyno time lol soo i made some good numbers and got my problems worked out (they stayed till almost midnight on Friday ... soo i could get the car fixed ) i went home a happy camper ... i cant say enuf about the staff here a bunch of great guys !! that makes 2 good experiences with them !!