Re: fuel injectors and pump
just look at the fuel settings on the afc. if you're at roughly -35% across the board, you've got 550's in there. he'd be stupid to swap the stock injectors back in there and leave the leaned-out setting.
as for the fuel pump, the only real way to tell is to pull it out of the tank and see; the denso pumps are pretty quiet. the other "easy" way you could find out is dump race gas into your tank and pull the wastegate hoses. if you've got the stock pump in there, you'll swing lean and sputter/knock above ~17psi or so. not very safe, of course.
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Maddog Performance Engineering
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