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Originally Posted by wvumtnbkr
My understanding is that the only way these cars regulate boost is through the internal wastegate. Is the wastegate big enough? Is it necessary to port it right from the start? What are the drawbacks to this?
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Porting the stock wastegate can only help and not hurt.
Even if you do "over port" the wastegate, a boost controller can bring the boost levels up again.
Basically, if you're going to run a freer flowing exhaust, porting the stock wastegate is highly recommended.
Drawbacks?
It's labor intensive...
If you port too much, boost levels will decrease (but see above comment to fix this).
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Second, is an FCD a good idea?
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It's required if you're running a stock ECU.
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Do I need to upgrade the fuel system as well? (already planning on a Walbro fuel pump).
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Upgrade fuel pump is highly recommended...
The stock 4 x 550's max out at around 240hp at the wheels.
If you're shooting for more power, you'll need larger fuel injectors and some way to control them.
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If I upgrade my injectors, will the computer recognize the larger injectors and lower the duty cycle (through the 02 sensor loop)? <-- I doubt this!
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Only in closed-loop...
At cranking, idle, and WOT, the stock ECU has no clue...
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Anybody have any good ideas on how to make the turbo system reliable?
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Don't actually understand what this question means...
How to keep the turbocharger from blowing up?
-Ted