quote:The Webers are much simpler in that there are not an infinite amount of variables.
You can jet them up or down for good or bad air and that's about it. So in a sense they are much easier.
I suppose it's a matter of what your familiar with but from my point of view, there's no comparison. Webers are much more diffcult to tune. Between the chokes and the number of jets in an IDA it's also very expensive unless you can somehow guess right the first time. I'd go as far as saying that anything you can do with IDA Webers, you can do better with the most simple IR control scheme and in much less time. I think you can get all the control that Webers offer with just rpm, tps, timing signal, and the typical enrichment algorithms found in most aftermarket ECUs. Then you just iterate your adjustments like you would tuning the carb. It may take a little more effort to get the various enrichment schemes right but a lot of this is addressed by software depending upon the ECU manufacturer. If you add wide band O2 you even can take the guess work out of where you're at in A/F ratio. Not that I'd advocate this scheme because it doesn't address a lot of other performance or street behavior issues, but then again, neither do Webers, thus the comparison.
quote:I didn't say easy, just easier then mapping 8 cylinders to a power of a number as yet unknown to me.
You don't generate fuel maps for each independent cylinder (you assume they each require the same) and it's really not that big of a guessing game. Some estimation of BSFC/ horsepower, your injector flow, and some conservatism to make sure you approach from the rich side of the curve is about all it takes to prescribe pulse width and initial maps. Most aftermarket ECUs will generate an initial curve with this input.