2011 TE449 Running well with factory EFI system - finally

Many bikes out there now with out the Butterfly. I meet more and more People here in Victoria who have removed the Butterfly. There is no more stopping .
it s almost that you wont find bikes in the future with them !!!

Will post results without the butterfly soon just at the moment work and miserable weather in VIC doesn't permit,thanks everyone for input

ill plan on riding this weekend... maybe from Big Pads Creek to Reefton. One of my favorite rides. Through the Pipelines and into the Singles along there,,,

anyone know where in the uk you can get race map 3 flashed? or am I better just going down the route of a pcv ? just bought the full titanium arrow mx exhaust system for my 2011 449 and presume it wont run well without a richer set up, at present its race map two and standard slip on akro which with the bf removed is running well(nop flame outs and definitely better without the bf),but I would like more snap off the bottom,at present its still not as good as my old 2004ktm450. and not a great deal better than the yzf250 2006 model I had with a megabomb header. or should I just bin it all and get a jap/ktm. seems like a load of hastle to get the bike just to run as well as a bog standard other make bike?

The more open exhaust may be on the limits of the standard mapping, so chasing up Map set 3 might be a good idea. (various reports of being able & not being able to flash the 2011 bikes. Seems a luck of the draw thing)

A PCV will give you good control of the mapping for sure, but you might be able to get what you're after by 'map shifting' using the TPS.
Check out the original post on this thread, it's how I woke my bike up.

Mine is a good match for all the current KTM/Berg 450s I ride with & still running the supplied slip-on Akro.

What gearing do you run?

I have mine stock at 15/51 for off-road, but will be going lower soon when I replace the chain/sprockets.

I am running 15/52 gearing which seems fine in even the tightest of single track going. will try the exhast on today and give it a short test run to see how bad it is. haven't even looked at the tps to be honest. so by adjusting the tps I presume you are trying to trick the ecu that you have a wider throttle position that you really have so supplying more fuel?

Yes motosportz so i'm not the only one with a issue I run a full pro circuitand my 449 seems to run a little lean and frustrating at times. Any ideas on how to fix this

Just a quick vid farting around the yard. I tried the BTF removal but with the factory map it was obviously way too lean and not happy at all so I put it back in.
I did remove the auto idler pin and have had the bike through some serious poop with no issues. Just wanted to show a stock bike working like it should.
I'll get some actual trail footage soon....

You can't just remove the butterfly, you have to add fuel too as mentioned in the original post. Then it will come alive.
If you don't have an aftermarket tuner (as my standard bike doesn't) adjusting the TPS as detailed will do the same & make the mod work well.

Yes, correct, the ECU runs slightly up the scale all the way through the maps.
This is more than enough for the Akro slip-on, I can have it too rich if I want, so I reckon there'd be some left in the mapping for a more open exhaust.

See above post....

Because he's a man

I found that backing of the adjuster screw on the control arm a couple of turns restored engine braking to normal ,

And like me a good wife to let you play with your toys.

Hi Roly,
Yep, tried all that.
I had that sucker all the way out and all the way in at different times. It is a flawed, redundant system.
Totally unessesary for the running of the bike.
Gone now