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How many pounds of boost can the F2T engine support. What is the most recomendable. Thanks a lot for your help.
 

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I've heard that the max is 17psi on stock internals. I've been running 15psi for over 30K miles, and I have 171K on the car now with an upgraded turbo. I had it at 17psi, but without race gas there is too much detonation and the knock senser retards the timing and it only boosts 15psi anyway.
 

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I see that you have throttle body in your signature. What kind?
 
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