I got the canadian cold weather flash done, it's #61. I noticed much better gas mileage in town it's very noticable and improved gas mileage on the highway. I burn noticably less gas for the same route that I usually take. Also, the extra kick that the engine use to give at 7000 rpm and that I had lost with the m-flash is back. I have never calculated the gas mileage so I can't give numbers all I know is that I can drive a lot longer before I have to gas up.

 

so is this the "n" or "p" flash? I'm getting worse mileage after the "n".

 

I don't know which flash letter it is. On my letter I received it said #61.