JeffYoung
New member
Ron, two years ago I think the Comp Board "opened up" the ECU rule and made ECUs free so long as they fit in the original ECU housing. I agree, this is a significant change from stock, but I think the COB just gave up on trying to police it because it was nearly impossible to do. I don't know if that is a good reason for a change, but it is what happened and the result is that chipped cars did get a significant (in my view, as - admittedly - the driver of a carbed car) advantage over the older tech carbs.
Some people on this board who (a) know far more about these things than I and ( whose opinion I value argue fairly persuasively that the ECU rule just allows EFI cars to do what carb car drivers can do: vary air fuel mixture via needles and jets.
But I disagree, somewhat. ECU/EFI cars can precisely plot air/fuel mixtures over rev ranges and have the engine tuned to respond better to race conditions. With a jet/needle adjustment, you are making a rough, static adjustment to a constantly changing environment.
My two cents anyway.
Some people on this board who (a) know far more about these things than I and ( whose opinion I value argue fairly persuasively that the ECU rule just allows EFI cars to do what carb car drivers can do: vary air fuel mixture via needles and jets.
But I disagree, somewhat. ECU/EFI cars can precisely plot air/fuel mixtures over rev ranges and have the engine tuned to respond better to race conditions. With a jet/needle adjustment, you are making a rough, static adjustment to a constantly changing environment.
My two cents anyway.