1990 Supra Performance mods?

[j3pz]

1. replace the headgasket with an oem and arp head studs or metal hg with arp head studs
2. maintain the engine/ repalce old corroded vacuum hoses and coolant hoses
3. replace the turbo elbow, downpipe, cat, and catback with a 3" turbo back system
4. boost controller (on the stock ct, its commended not to go over 12 psi)

from here its all up to you. this is pretty much the limit on the stock fuel system. with this setup you will most likely hit fuel cut.