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This I gotta know as well - already have the PFC but an PFC Boost Control Kit is going in, and it'd be nice to know what safe boost levels would be. 1.1bar is ideal (some people in Japan run 1.3 on the ceramics, is this verifiable??) but of course if that's beyond the range of the stock fuel system, then obviously it can't be considered.

It would seem to me that injectors would be needed before an uprated fuel pump - I wonder what kind of injectors the stock pump can drive...550cc? 600cc?

Someone also please confirm or disprove my gut feeling that an aftermarket fuel pressure regulator is an utterly unnecessary expenditure; that the stock one is perfectly fine....
 
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