If you're looking for more boost at high RPMs, adjusting the wastegate can do this (although efficiency of the turbo might decrease plus heat). However, the wastegate does not affect how soon the boost builds, as the wastegate will be (should be) closed until boost approaches the wastegate-opening limit (.95bar?).
To build boost faster without changing the turbo or any other mechanical swaps, reducing exhaust flow resistance/backpressure and improving intake flow will create minimal (if any) improvement. Fueling the engine sooner (adjust ALDA) and even slight overfueling will help however as the fuel introduced sooner is heat to the turbo sooner, and expanding/hot air is what makes the turbo spin. Power at the cost of BSFE.
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Gone to the dark side
- Jeff
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