ECU and larger injector ?

[indy1979]

Can the ECU adjust 550cc injectors well enough to not need a fuel management controller? I do have the HKS S-AFR if needed, but I think the ecu can control the 550's. The engine is FULLY built, rods, pistons, knife-edged crank, blueprinted and balanced rotating assembly, lightened stock flywheel, HKS 272/264 cams, SS 1mm oversized valves, crower springs and retainers, etc. FULLY built.

Sam

 

[BatmanGSX]

No, the ECU can't "control" 550s. The reason for this is it doesn't know you put 550s in. It has no idea. No matter what you do the ECU thinks you have 450s, a stock MAS and stock fuel pressure. If you change one of those and don't somehow compensate for it the ECU doesn't say, "oh, he hacked his MAS," or "Oh, he put 550s in," it just says, "sh1t's fu@ked up."

And the AFR sucks because it doesn't have high and low throttle adjustability.