Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Twin Turbo?

Using a twin turbo setup is not more efficient than a single larger turbo. You need to run the 2 smaller turbos at a higher psi to make the same power than the larger single turbo, which will create much more heat, hence lower effieciency. Looking at the Supra TT, many owners switch to the single turbo kit, since they can produce over 1000hp easily, whereas the twin turbo upgrade kits are limited, and require even more work.

Twin turbo set-ups are never better. Many people say lag on a single larger turbo would be too much, but it's not. You'll be using twin 16g's, or a single T3, T3s60, or T3/t4 hybrid, and they don't have alot of lag. I know that the T3 S 60 reaches max boost around 3000RPM...even a tad lower, especially if you have airflow increasing mods, like P&P heads, intake manifolds, etc. 2 sounds cooler, but 1 is better, also trying to fit 2 in thsi car will be tough. Go find a nice T3, port it out to a t4, and you got yourself a hybrid..., and it's not that expensive.

Good luck either way. If you do a turbo on the 3.0L, use the 3.0L heads since it uses larger valves, and will have lower compression ratio than if you use the 2.5L heads. I believe if you dome the 3.0L pistons, you can lower compression even more, which will allow you to run even more boost.

Again, good luck, have fun...