1 Just connected AM koso speedo to k75, tach not reading correct or is it? Mon Jan 06, 2014 10:57 am
Oliverinlux
active member
Hello as I said I just put on my aftermarket koso speedo on my 94 k75 and all is well thanks to a conditioning circuit made by a friend for the speedo and sans the fuel gauge as the k bikes resistance is strange when it comes to the fuel gauge. (something I also need help with by the way)
HOwever the tachometer seems to be reading different to what the motometer was. normally 73 mph equals fifth gear at 5000 rpm on the original motometer however on the new koso unit it reads that when I feel the bike at top comfortable speed (normally around 73mph at 5000rpm) the new speedo says i am only at around 4300rpm so it is not a gigantic difference but definitely noticeable. So maybe the original motometer is wrong (which is most likely true, however Ive heard of the OEM speedometer being incorrect but never heard word of the tach being off) or the new KOSO meter is reading incorrectly. Any ideas?
ALso does anyone know a way I can use the original fuel level sender on the new koso? The koso has two different settings for the fuel gauge at either 100 ohms or 510 ohms but IM guessing these all run opposite to bmws fuel sensor.
HOwever the tachometer seems to be reading different to what the motometer was. normally 73 mph equals fifth gear at 5000 rpm on the original motometer however on the new koso unit it reads that when I feel the bike at top comfortable speed (normally around 73mph at 5000rpm) the new speedo says i am only at around 4300rpm so it is not a gigantic difference but definitely noticeable. So maybe the original motometer is wrong (which is most likely true, however Ive heard of the OEM speedometer being incorrect but never heard word of the tach being off) or the new KOSO meter is reading incorrectly. Any ideas?
ALso does anyone know a way I can use the original fuel level sender on the new koso? The koso has two different settings for the fuel gauge at either 100 ohms or 510 ohms but IM guessing these all run opposite to bmws fuel sensor.