JeremyR

did you check your fuel lines for a leak?
did you check your fuel pressure?
bad 02 sensor maybe? i dont think this is it either though.
doesnt seem to be a vacuum leak to me.

you say it ran the same on a map setup as it did on a maf setup. so that rules out alot. problem is most likely fuel related/mechanical related. you say the timing is set on everything so that should rule out mechanical shit. i would re-check the fuel system, this includes the ignition (spark) system as well. personally, i think that maybe your fuel pressure is too high, causing a rich condition, or your injectors are bad, causing a rich condition. send in your injectors to be cleaned, and tested. buy a new fpr. check all fuel lines. double check that your walbro is in good shape as well. maybe change the plugs again for shits and giggles. you say the plugs are fine, but really if your a/f ratios are this fucked than you would see some signs on the plugs...

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