|
The problem with the original post is that it's too general, and it would take volumes of text to explain thoroughly.
On top of that, "tuning" is different from person to person.
So there are tuning philosophies that differ from tuner to tuner.
Same goes for turbo sizing...
In general, I normal ask HOW MUCH you're willing to spend and what your power goals are.
Since you mentioned what kinda power you're looking for, you still haven't mentioned how much you're willing to spend?
A GT35R is a nice turbo, but it almost requires a custom turbo exhaust manifold (due to the T3 turbine, unless you go with a custom T4 turbine), and it's on the pricier side when it comes to turbos.
You mention autocrossing and road racing...do they have rules governing modifications?
If you're talking SCCA autocross, modifying the turbos automatically puts you in MOD!
Then we need to take into consideration of your tire set-up...
Most "street" tires cannot take more than 300 - 350hp.
Thus, trying to make more than 400 is really a waste of time.
400hp+ will require slicks to put the power to the ground, or you're going to end up just smoking the tires.
You can argue traction control, but that's a band-aid fix when you can just lower the power levels; less power is always a good choice, cause it lessens stress to the drivetrain and cooling systems.
See where this is going?
-Ted
|