Procharger D1, helical gears, regular bypass valve. I live in Car****ifornia so I'm running straight meth.
D1 on 4.25 pulley i put down 629 on a dynojet. Some friends who dyno'd here went to a few other places and noted that it seems like they see about 30whp more? But we all know how that story goes. Dyno is just a tool not a 1:1 benchmark.
That being said. I ****ing love it. Careful with the dudes suggesting you go D1 with a huge pulley. I wouldn't go anywhere past 4.25ish. My pulley took a big bite out of my hood insulation and I'm sure any larger would result in contact. I inspect my setup often and so far other than a few kinks here and there during install (shortening hoses here and there that weren't really clearly discussed, few brackets fit weird, the intercooler can cause issues if you aren't creative) i haven't had a single ****ing issue. I'm not certain you'll need or care about the race bypass but i hear it sounds awesome
. The straight gears chatter... I'm not a fan of that noise. But the Helical has exactly the right amount of whine and hiss. Rev with the hood up and the hiss is overbearingly awesome lol.
I have a full build thread. Check my history, I detailed my experience during install and did my best to give as much info as I felt was relevant.
The only REAL advice i can give is be realistic with your power goal. This car is a bitch and a half to tune and a bigger bitch when it comes to fuel delivery. Be mindful, a bad tune or faulty fuel upgrade installs will result in a bbq'd piston.
Most importantly? You're going to love it.