Quote:
Originally Posted by sendler
I would consider trying this on my CBR250R if I had a local dyno operator that would give me a deal. The only place around is the Harley dealer and they get $400 per session. I wouldn't want to try it without a dyno to see where and how much power is left and to retune the mixture. Even though the bike is injected and has an O2 sensor, The adaptation is somewhat global and limited in range. I think a remap fuel controller would be required.
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Or you could always just try retarding a tooth and see what happens in the real world, something a dyno won't tell you. A one tooth retard is really not likely to damage anything. (Can't believe I just wrote that.)
If you are intending to advance the cams for increased lower speed power at the sacrifice of top end, first move the cams two teeth and rotate the crank gently by hand at least two revolutions to check for piston/valve contact, then move the cams back to only one tooth advanced. You'll be safe that way. Disconnect battery for 30 minutes or so to reset the ECU and give it some miles to learn it's new conditions before evaluating power and mpg effects.