2010 XFR Dyno results
Sorry I didn't answer before I did not see your reply until now. So no throttle bodies that I can find. So i have talked to a friend of mine and we are considering boring a stock one ourselves (he has a cnc and a good programmer. I can buy the butterflies already cut I believe. (I know I can get them in various sizes, just have to make sure one of the available size butterflies is the size we need) The aftermarket butterflies also will have the correct beveled perimeter. The next thing to check would be resting (idle) degree of butterfly and throttle shaft and ensure the new one was the same, elsewise it would indicate a +positive or -negative throttle body position. Which I'm sure the computer would dislike.
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