My motor was also tuned on a dyno; first with a 4 bbl carb and single plane manifold, then with my IR EFI system. It actually made a bit more power at 6,500 rpm with a carb but the power curve was steeper. The power curve was flatter with EFI. Up to about 4,500 rpm, EFI made more power. As far as drivability is concerned, there’s no comparison. EFI is better hands down.
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