Updated TPS/EFI Reset 449/511

Haha, that's part of my solar cooker...

Is it safe to assume that at the end of step one you shut off the engine?

I am having to do this reset every month or so. Is this normal or could there be underlying issue? Have checked the the throttle cable and all looks fine and smooth.

Not normal. Why are you having to do the reset?

I'm having to do the rest as it seems as the throttle is stuck open. I would accelerate and then of the throttle completely and it still revs pretty high (feels like stuck 1/4 open throttle) even with the clutch pulled in completely. Sometimes it got that bad i have been going 60 Km/h and slowing down to stop at lights and even when am at the lights stopped its still reving way to high. Have fiddled around the big brass air bypass screw and its spot on to what the thread suggests. As soon as I do the reset it is fine for a few weeks and slowly gets worse and worse.

Maybe try grounding the throttle body/tps

Sounds like a bad or failing throttle position sensor to me.

Won't hurt to try it like danny318 suggested, at east temporarily anyway. I was having the opposite issues, constantly would not idle. I had TPS rest approximately a dozen times, although fixed it temporarily it would always play up again at the most crucial moment. I grounded the throttle body and also sealed the ECU plug with mastic tape as I suspected water ingress within the plug/connections playing havoc (I routinely wash after every ride). I haven't had the problem since, can't say though whether it was soley either the grounding of the throttle body fix or the ECU plug mastic idea, maybe both? Like Tinken stated, a failing throttle position sensor is quite possible.

I'm having same, only if engine very hot. I think, that's mixture problem. Airbox is too hot - mixture is too rich. May be I'm wrong.

Three hours of singletrack last night and the 511 with the Zip-Ty remap (#3) is worlds better than before.
Even on botched log hops when I was sure it would stall- it didn't. Pulls like a John Deere from idle.
Thanks again Tinken.

Had to do a reset/ adjust bypass today due to constant stalling then after 5 minutes it started to overheat and the throttle would not shut off. Had to use the kill switch twice as the engine would start by itself after the first attempt. Pretty annoying - gave up and went home. Will have to look at the cables to see if that helps? Was running great the last couple of months.

Just wanted to say thanks very much for this thread - I was unhappy how the bike was running until I did the TPS reset and air bypass adjustment - these bikes are awesome.

You should upgrade your ecu map set to #3 if you haven't already done so.

cheers Tinken - Mine is the only SMR in NZ which I imported from Australia. I called a couple of Husqvarna dealer workshops and they didn't know what I was talking about. The NZ importer did bring in the 449 TE & TC models so you would think they should have the info - I also called a BMW dealer and they said they will look into it as well.

The alternative and better option in my opinion is to add the powercommander5.

The alternative and better option in my opinion is to add the powercommander5.