it works great, on the street if i gave 1/8 throttle the booster would boost it to 1/2 throttle so every take off was fast,, at wot there is no Difference Sprint booster or no sprint booster .. I took it off for a test to find out if there were any difference at the track, and because of the V8 is better without the Sprint booster, that's why mine is for sale. now of course just as soon as I pick up another SRT6 ,, in a few years I will need it back again lol jim