Okay so a little background first… 2014 Can Am XMR 650. It has 160 miles now… the first 100 miles were with stock exhaust and the last 60 was running the looney tuned slip on. i have attached pictures of the spark plugs to get opinions on how they look, whether they are rich or lean. I think they look a little rich but otherwise good. I am posting to ad to the big debate on whether a tune is needed for a slip-on (This of course I decided NO tune after talking in length with VForceJohn). Opinions are greatly appreciated in Advance!
