yea don't be too surprised if you don't hit 400...i myself have the v2 sq w/ aftercooler...i had the blower w/ aftercooler with 3.33 pulley making 10 lbs of boost with xpipe and tuner and i made 379/370...i recently put on afm powerpipe, and 75 tb and plenum and i may have been close to 400 but...