[Jgordon]

89911 - what else do you have going on with your engine? Higher compression, exhaust, intake? It's my understanding that twin-plugging does not add power, but rather just creates more efficient burn in the cylinder (which could, by definition I guess, create more power?)

Jeremy - what kind of cam are you going with? What's the 964 equivalent to?

Rick - To set the cut-out, all you do is program a point on the chip - that's how you can have a valet setting that cuts the engine at 3K. If you're asking how people know where the engine will overrev, and where you should set the redline, my understanding is that the eggheads in the factory match up the physics of the different pieces, do some practice runs, and then set the redline back by a safety margin (yeah, my understanding is kind of vague). Either that or they just blow up engines and keep lowering the speed until the engines hold together. I honestly don't know. It's been said that the 3.2s are good to roughly 6900 rpm, with the weak points after that being the soft valve springs and the stretchable rod bolts. Deman said that with the changes, the engine could spin to 8k easily, and we set the cut-out at 7400. Hopefully someone will come in and explain it better.