I've tried this, and I thought I noticed a slight uptick in performance, but then again it may well have had a placebo affect as well. When I use it in "autostick" mode it acts like a proper performance car. Auto mode (D/granny mode) is really inconsistent for me, I've had a couple of ricers give me a good run for my money (a four door acura for pete's sake!), but in autostick mode, I doubt that'll be the case unless their HEAVILY modded (Subaru WRX STI would be a good challenge, and might well win, their quick).