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I doubt that a trip to the dyno would reveal much. I spent 4 days on the dyno trying several different spacers and didn't prove anything.

You must have gone to the wrong dyno with the wrong spacers and the wrong people,our testing with Wideband O2 in each cylinder has been interesting,knowledge gathering and the end results have given us more power and acceleration.Bill C.

Ceralli Racing Engines & Checkered Flag Machine Racing engines , CNC porting & induction development http://www.checkeredflagmachine.net/