Quote:
Originally Posted by Dingdong Dom
I don't really want to go down the reflash route as I'm sure these bikes were never this bad when new.
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Don't be too sure! The low speed running is pretty bad, even from the factory.
Do you have the carbon Termis or the stainless ones (they come with different ECUs)? The 'carbon' ECU will disable both the exhaust flap-valve and the lambdas while the 'stainless' ECU just turns off the butterfly valve. Consequently, the carbon cans will probably run smoother than the stainless ones. Having said that, both Termi ECUs still run lean and I'd definitely recommend a Rexxer remap from Neil at Cornerspeed if you want to see real improvements.
As rollo said, whenever you remove the ECU, you need to perform the 'warm' TPS reset. You will also need to give the bike 4-500 miles for the auto-adaptive parameters to re-trim themselves.
If you're running the stainless system and don't want a remap, consider lambda eliminators like these:
https://www.ebay.co.uk/itm/Oxygen-la...6/254516374946
More suggestions on achieving smooth-running here:
http://www.ukmonster.co.uk/monster/s...ad.php?t=54450
There's no indication in either the Termi installation instructions or the workshop manual that you need to disconnect the battery in order to remove the ECU but I always do just to be on the safe side.