What should I do to protect my new engine?

[wvumtnbkr]

Good Day!

I am doing a turbo swap on my NA (series 4). I need a new exhaust, but I am afraid of blowing the motor with excessive boost.

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?

Second, is an FCD a good idea? Do I need to upgrade the fuel system as well? (already planning on a Walbro fuel pump).

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!

Anybody have any good ideas on how to make the turbo system reliable?

Thanks!

Rob

FLAMESUIT ON!