Holley sniper vs. Edelbrock pro flo

Any EFI system that has a MAP and O2 sensor will have these possible issues. Using a MAF sensor is an improvement as the ECU can see the actual air flow, not estimate it from the MAP sensor so that is better, but you still have the O2 sensor issues. But MAP sensors are very easy to physically implement and are inexpensive..

I could be wrong but I'm not aware of one single aftermarket EFI that uses MAF, good or bad.