What should I expect for horsepower on a 13b NA with Mazdatrix street porting at 7500RPM?
Georges B.

FWIW, when Bruce re-worked my engine originally, he "estimated" 200 HP at 6200 rpm, and 230 HP at 7500.   That estimate was based on the combination of parts (89-91 turbo housings, 9.7 rotors, street port) compared to what he's dynoed in the past.  I'd be willing to bet that's a little optimistic, but until I get a fuel flow reading that's less than a factor of 10 off, I won't know. 

Cheers,

Rusty (old 6-port housings ready to be filled with epoxy)