Turbo upgrade info ?

[Guest Anonymous]

Ok I know it's easier to midify a factory made turbo car witha bigger turbo. That's why I opted for one. Now then I alos know that when upgradeding to an larger turbo, I need to include these key things. Air,fuel,adn how to keep the two relatively cool. Just wanted to make sure I didn't leave out anything. And what turbo's do you guy's suggest I upgrade with ?

[SleeperZ]

I upgraded my factory turbo with a hybrid T3/T04B with the Super V compressor wheel. This is what I ended up with anyway, I just bought a turbo "upgrade" from Jim Cook Racing before I knew anything about turbos. For once, I didn't get burned - it is an excellent street turbo. There were some small modifications to the wastegate actuator mounting and J-pipe to make it fit. If you aren't into any mods, some people run a factory turbo with an upgraded GN compressor wheel in the stock housing. This bolts in with no modifications.

[Lockjaw]

You can actually do alot with the factory turbo. The turbine housing is a t3, so you have half of the equation if you wanted to get a hybrid. Bang for the buck, a hybrid is a good way to go, and the Vtrim is a nice wheel for the street, and it can do about 400 crank HP or so with the proper supporting modifications.

 

I would see about getting a good intercooler to go with a larger turbo, but once you get over about 12 psi, you really need to have larger injectors to add more fuel. Unfortunately this sort of thing is like a disease, and once you experience what kind of power turning up the boost add's, the tendency is to keep turning it up.

 

You should also upgrade the turbine wheel to a stage II or stage III. I have the stage III and it spools nicely. You could also go with a larger compressor wheel than the V trim. I have the H3 which is the next size up, and it did not work well at all until I got over 12 psi. After that, it moves on.