I just put one on Thursday and hit the track Friday. I'm not sure yet if I like it or not.....I should have brought my P&P SVT one with and swapped it out to compare. I was told I would notice more high rpm pull, to me it felt like from the low side to about 3.5k rpm's it was pulling harder. I also broke a weld on my exhaust during my first run, so the car obviously wasn't running good with a massive exhaust leak.
My mods are 75mm maf (put stock maf sensor in the housing), kkm intake, bat intake pipe, max extrude hone UIM, 2000 LIM, msds headers into stock y-pipe/exhaust (no resonator), and the 65mm TB. Let me get some more miles on it and report back.
On a positive note I had so much wheel hop on my last run my backlight for the dash clock started working again LOL!