twin turbos or single

[pwpanas]

Originally Posted by BradMD

I only really want to know how much the GTE can make as I have heard it can do around 400hp but if more i may consider swapping the engine with a TT or buying a TT supra with the big brakes, abs ect. Other wise with a single turbo kit, i can fit bigger then UK brakes myself or find a used US/UK spec set. I also plan to fit aftermarket coilovers, and i have a set of 18" wider wheels already. I may swap the gearbox and drivetrain out of a wrecked TT or something if I don't get a TT supra. Regarding the single turbo kit, it is a bit pricey, also parts like the intercooler and other parts i can buy separatly with better specs, and reduce the price of the whole upgrade.

1) You have to precisely match the intercooler size/"specs" to the turbo size. An intercooler that is too big will introduce additional lag. The intercooler in that Boost Logic kit is precisely matched to the turbo size, so anything with different specs won't work as well.
2) A cheap ebay intercooler is just that - a cheap intercooler. Most likely fitment will be poor, the kit won't be complete, and the poor-quality welds will split and/or leak boost.

With the oem twins, the highest hp I'm personally aware of (verified) for a 2jz-gte in an Mkiv Supra TT is 570hp (485rwhp). This was on brand-new turbos, a brand-new engine, bpu+++++, and dyno'd at sea level on a very cool day. I've actually heard of even higher levels by pro race teams who did extensive porting&polishing,etc. to the turbos, manifolds, intake & exhaust ports, etc. I agree that a 2jz-gte swap would be a great option for you, if you can find one with very low miles&hours.

Oh, and of course with an aftermarket turbo kit, fuel system, cams, ecu, etc., the oem 2jz-gte (bone-stock internals) is good to about 1200hp (1000rwhp+). The oem TT transmission and the oem TT diff can easily handle that hp level too.