I have a pm6 ecu running a b18b motor. how different is the fuel curve compared to the pr4 ecu? I have a fpr a and a fields afc. and i was thinking of compensating for the lack of fuel in certain rpm ranges. the reason why this setup was is because the p75 intake manifold doesn't have an EGR valve and the PR4 ecu reads off a EGR where the pm6 doesn't? is this true or is the EGR valve only found in an automatic integra? any help would be appreciated. thx