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Old 11-24-2012, 08:07 PM   #17
alainmax OP
ca vaut le detour !!
 
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Joined: Aug 2008
Location: Portland, Weird
Oddometer: 602
Quote:
Originally Posted by roger 04 rt View Post
Alainmax, Just before 1 bar it is Open Loop AND richer mixture. Often, the richness (only a few percent richer at that point) makes a big difference.

What I think I'd do if I were you would be disconnect the O2 and add temporarily an AIR TEMP. Shifter like BoosterPlug or iice air. I have one you can borrow for testing. Does your fuel have ethanol in it? If so is it 10% like I get here in MA? Adding the air temp shift in open loop will keep the mixture a few percent richer. I don't recommend it as a long temp solution but it may give you a lot of insight.

What we want to find out before you spend money on a new o2 sensor is how sensitive your bike is to its mixture.
thank you Roger,

My mistake : i keep forgetting to include this info . : i have been running the booster plug for 3-4 years !!!
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