I am scheduled to have my bike dynoed this week and wanted to change my plugs out to the SE plugs, should I change them before the work or does the tech have to read the stock plugs? Bike has 1200 miles on it. Thanks

 

IMO...change them "before" dyno as you want the bike tuned to installed plugs.

 

Why would you change to S/E plugs?

 

I have found a much improved/smoother acceleration and put them in all my bikes.

 

Ok then.........From a spark plug......Carry on.

 

Save your money, they won't help you. The difference you perceive is from something else. The tech won't even look at the plugs during the dyno tune, the closed loop area of the tune burns off anything he might be looking for. They use O2 sensors to read the AFR.

Mark