When replacing the Eprom chip, does the gas tank need to be completely removed?
 

In a non-ABS R1100S, when you replace the eprom chip located in the control unit under the gas tank, does the tank need to be completely removed or can the control unit be removed with just the tank detached in the rear and propped up?

It's been a while but I don't remember having to remove the tank completely. You can prop the tank and get access to the screws to release the ECU.

you don't need to remove it, but don't drop it, I usually remove it.

Why would you want to leave the tank on :rolleyes: take it off it's a 2 minute job and you want to start delving into the ECU :eek:

Ok, haven't actually moved or removed it yet so I wasn't sure how difficult it is. I know I need some fuel line clamps which I found at HF which I will buy. I even have a new battery and air filter waiting to be installed, but riding that darn thing gets in my way since its so much fun.

As I recall it was a bit of a pain to try and reach under and I eventually removed my tank.

My recommendation would be to purchase two pairs of quick disconnects from A&S Cycles or some other shop and to install the QDs after/while removing the tank to upgrade the chip.

Thanks for the info guys.

Yea I fell for that trick 10 years ago it work's really great so long as you have 3 hands!!! that'll be one to hold the tank and the other two to undo the QD's don't bother.

Buy a couple of clamps for the fuel pipes undo the two clips and pull the pipes off and it's done.

Ok, and hose clamps are inexpensive. I'm surprised I haven't needed them before. Always removing tanks from the bikes.

The QDs need to be install as far down the lines, close to the plastic fuel distribution lines, as possible. From then on unbolt the tank, slide it back, lift & slide forward to rest on top of the forward mounts. Now lift the rear of the tank and put a block of wood or a rolled up towel between the tank and battery. The QDs should be hanging down where you can disconnect them with two hands. The only other trick is to lube the QD o-rings so you don't pinch them on assembly.

Yea I have to do that as well not very QD is it :rolleyes: and of course that's the easy bit when you put them back together you have to work around the wooden block while connecting the QD it's one of those ideas on paper is great in reality it's BS.

If the QDs are hanging on the side then why mucking around in back by the wood block?:confused:

Chip?
 

maverickma - What chip are you going to put in your R1100s?

Let us know what you think after you get it in and ride the bike for a while.

Because their underneath the tank so unless you have hands of a 5 year old they still need to be connected and you need room to do so.