butt dyno. There was a very significant change in acceleration. Like I said, you can feel where there is no change and where it gets worse from adding to much or to little fuel. Im not saying in any way that my AFC is tuned for top performance. I still want to get a datalogging wideband and tune it better.

I know no one likes butt dyno and could give 2 ***** about someone with it but doing over 20 passes will tell you something. Especially when your getting pushed into the seat where as before you were not.

You can also tell how much faster (time wise) the engine reaches 7500.