Reality check, test don't guess

I removed the D-port inserts. It would take too much time and energy to correct the changes they made to the power band. Remember my engine is not stock. Others may find them some kind of improvement out of the box, so to speak.

Letting them go for $20 to anyone local that wants to come get them.

D-port exhaust inserts is what I am talking about. Engine runs much better without them installed.

What they did do though was show me via color on the inserts once removed is my right hand cylinder is running a little richer (or oilier) than my left hand cylinder. I could see it on the plugs, but the color difference really stands out on the slipper foot.