Home › Forums › Motorcycle Tech Talk › Emission setup on NZ market bikes › Re: Re: Emission setup on NZ market bikes
AnonymousFrom what I have read the CCP plug is used to select the engine mapping. There are 5 or 6 maps preloaded in the MA2.4 ECU for the various models a code plug fitted when the bike is built to enable the appropriate map. With a plug in the O2 sensor is used in what is referred to as closed loop. The system squirts fuel in , measures the result and if outside the desired range adjusts the fuel delivery. No plug puts the bike in open mode (no feedback from O2 sensor) and a trim pot is used to adjust the Co levels. Closed mode means the whole sytem has to be working perfectly - valve clearances, throttle balance etc can affect it. Engines with cats should run in closed mode. My 1100 S surged a little bit when I got it , a quick fettle , valves and throtlles cured it, now pulls like a train from idle in any gear.