not thrilled to death
I bought the tuner for my 08 impala ss I set it o make the performance setting and changed rev limiter and each of the gears I added 500 rpm my transmision has been acting up a little bit but it has not thrown any codes out so idk. It may also have to do with the muffler delete system I put in place of original exhaust. Noone else seemed to have any problems cutting out the stock pipes though.
2007 Chevy Impala SS w/5.3L V8
After hearing that others did not have much luck getting any additional HP out of their Impala SS I almost didn't buy the unit. When I recieved it I was shocked at how easy it was to install becasue I've purchased others for other companies that were a real process to install. That said it only took a few minuites to install. Then came the test, my car was taking 5.9 seconds to get from 0 to 60 and now after checking the numbers several times I am running 0 to 60 in 5.0 flat, the power through all gears is amazing and the shift points are much crisper. As far as mpg I won't know until I get my foot out of the gas.