Originally Posted by
bcs925
catted dp mated to stock mid to prodrive axle back
silicone ypipe and/or sti sized TMIC
grimmspeed pnp exhaust manifold
grimmspeed pnp TB
GMBCS
and possibly water/meth injection (depending on price, and if I want to go crazy with power)
Don't waste your time with the TB until you've done your TGVs, you have a higher flowing turbo, and above all you've gotten rid of your cats! Just the exhaust will make a huge difference when tuned... and you don't have to go "crazy" with power on water meth; you're going to reach the maximum of that turbo's efficiency range sooner than you may realize...
I would look into doing a vf39 or 43 swap instead of the TB & header, catless exhaust (check nasioc for good deals), water/meth, and TGV delete/phenolic spacers.
If you wind up getting sick of that, you've got a lot more you can squeeze out (just ask Joe).