[radiorental]

Right! just last night I had a couple of free hours and thought... 'you know, I really should do a preventative valve check on my honda 450'. Youtube step by step to the right, cold beer to the left. Just bliss.

About the ECU. Bikes are becoming increasingly hobbled by emissions compliant ECUs. The aftermarket ECU options allow you to tune the bike the way you want. I'm not talking diesel-gate here either. My Honda ECU was getting me 40mpg, my aftermarket is getting 50-60 mpg but with maybe higher CO2 per gallon??? I dont understand what the rules/laws are optimising for?

[cwaffles]

The are optimizing for minimizing NOx, CO, unburnt hydrocarbons, and particulate matter. The timing of engines cannot be advanced so much to have high temperature burns which allows for NOx creation. See page 13 of https://nepis.epa.gov/Exe/ZyPDF.cgi/91010CTV.PDF?Dockey=9101...