My Quarter mile, unfortunately, I do not know. Not any 1/4 tracks nearby, and I've just had the car from tuners for about a week now altogether. But, as far as psi, kit is only supposed to make 6-8...when in reality, it gives you the added bonus of almost 10. So, about 9.5psi.
i's loves it! Hehe, come to think of it today, though, i was trying to get a T/A w/ ram-air option to take my bait, but, he wouldn't do it. What the hell was up with that guy?
Only joking, but, wish he would've ran so I could've stacked up and compared. oh well, perhaps another time...