Just got the tune a few days ago, it definitely is faster, that and the sprint booster are a good combo, but I prefer the sprint booster on normal or when he green light is on, I'm glad i have it, did not have a lot of time to test it out because after driving it for a while there was a thump sound, sounded like it was coming from the drivetrain every time I accelerated hard or even moderately in 1st or second gear, then the next day I heard a rubbing noise while pushing the accelerator pedal while already moving, at like 25 mph, so i don't know maybe it's the rubber U joint, Im not an expert on cars, I had to take it in to my mechanic, hopefully he can find parts for it.