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11-24-2009, 04:33 PM | #1 | ||
Trip's Assistant
Join Date: Feb 2008
Location: Imported from Detroit
Moto: 2009 HD Street Classic
Posts: 12,149
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Quote:
Ok lean is mean. Too a point. Go too far and you will end up with burnt motor parts. Understand that all of our bikes come "EPA lean" which is between mean and burnt. This gives you excessive heat off the motor and exhaust. It also, means that there is not enuff gas in the mixture when you smack the throttle open to rev properly. You get the lag then rev. A motor is a big air pump. You twist the throttle the throttle body opens and allows more air to enter the motor. However, due to lag with the epa lean mix, there isn't enough gas to accomodate the air. It leans out till the injectors give you more. Results = poor throttle response. These correct that by fooling the stock ecm into seeing a different resistent measure off the O2 sensor. This changes the a/f from 14.2 to 13.6 across the board. The ecm will still adjust to changing atmosphere as it does now. There is some resistors and whatever in the 2 wires. Mine has 3 cause I have to ground the rear. Both my bikes have 2 sensors. 1 per pipe. I'm not sure. Email him. Quote:
Nightrider site is amazing. Scroll thru the first link I put up. He's got tons of info on everything from spark plugs, motor oil, etc. If you have any questions, email him. His name is Steve and he is very helpfull. |
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11-24-2009, 05:14 PM | #2 | |
Chaotic Neutral
Join Date: Feb 2008
Location: Cherry Hill NJ
Moto: GV1200 Madura, Hawk gt
Posts: 13,992
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