I went to the track tonight with the vortech pushing between 5-7psi, All I have other than that is a Steeda Triax and a O/R Hpipe, but I have the stock catback....go figure... I ran 14.40 in my 97 5speed with just those mods, Tonight I went run and pulled fairly consistant 13.50s which is a full second better!! I have been running around 7 for a while and I have the 11-14 pulley sitting behind me, I cant wait to see what she does!