Re: Re: Emission setup on NZ market bikes

[phil1]

#5409

Try this:http://www.ibmwr.org/r-tech/oilheads/zero528.shtmlIn 2001 I bought a 2nd hand '98 1100G/S. It too suffered from the surging issues. My friend also had a identical bike but he had bought his new and it was still under warranty.We found these instructions (have a look around the website, there are other articles as well) and altered the TPS voltage on my bike. Fortunately my 1100 owning friend is a A Grade mechanic who specialised in EFI systems. The difference was night and day. We went for a ride afterwards, swapping bikes as we went and could not get over how different they were. My bike really got off its backside when the throttle was opened, no longer backfired and no longer surged. To satisfy my statistically minded brain I kept fuel consumption before the adjustment (in the old money) 53-55mpg, after adjustment 49-50mpg so all the TPS adjustment does is pump more fuel in. As for the potentiometer I was told its nothing more than an expensive variable rheostat (?). We put the bike on a gas analyser after the TPS adjustment and adjusted it to the required readings. Then crossed referenced it against some readings we had found on the internet re voltages (or resistences?) across 2 of the poles. It was near enough. Sorry to be a bit vague on some this but I sold the bike 3 years ago and I think most of the information was in the Haynes manual that went with the bike. I recommend this alteration although if you have your bike serviced at a BMW dealer you will have to ask them not to adjust it back to the factory settings.