The Rottweiler Performance 'Fueling Dongles' are an effective and simple method to improving the fueling mixture of any fuel injected KTM by allowing the stock ECU to deliver a proper mixture at low to mid RPMs. By replacing the stock narrow band O2 plugs with these simple to install dongles, the Rottweiler Fueling Dongles feed the stock ECU a pre set signal that substantially smooths out the lower end power delivery reducing the jerky transition between the extremely lean low RPM mapping and the open loop upper end mapping. Overall average air fuel ratios also tend to richen up by about .5 to 1 point as well allowing the user an inexpensive option to 'bump up' the richness of their fuel delivery if the cost of a Powercommander is not currently an option for them.
How do they work? It's actually quite simple. The stock ECU is set to lean out the fuel delivery to a very lean 14.7 air fuel ratio (AFR) under 5500 RPM and 20% throttle. Once the engine has reached a sufficient warm up the ECU 'listens' to the stock narrow band O2 sensors and looks for a particular signal to keep the bike in that lean condition. This causes heat issues from extremely hot header pipes, makes the motorcycle jerky at low RPMs and reduces power. The Rottweiler Fueling Dongles send a return signal to the stock ECU that keeps the low end fueling at a much better running 13.8 +/-. A mixture that translates into an overall better running motorcycle.
Note: When running our Rottweiler Fueling Dongles, you have the option to remove your stock O2 sensors from the exhaust header F+R. Click below for O2 bung plug options.
Notes, Suggestions or Precautions:
Rottweiler Fueling Dongles work very much the same as the 'O2 Eliminators' that typically come with Powercommander piggy back ECUs. You do not need these dongles if you are also purchasing a Powercommander. Tests have shown that average AFRs (air fuel ratios) richen up almost a full point when using the Rottweiler Fueling Dongles. They come in pairs. One for each cylinder and plug into the electrical harness replacing the stock O2s.
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Posted by Unknown on 26th Feb 2016
I just installed on my SDR. Night and day positive diff.
Sweetens the ride tremendously, much smoother.
These are a no-brainer for the SDR.
Posted by Unknown on 22nd Nov 2015
I thought the fueling was pretty good on the Super Duke but a little fluffy and some vibration/coarseness at 4k rpm and below. These dongles eliminated all of that and the bike feels much better; throttle response is smooth and the vibration is reduced enough that I can use a gear higher than before when cruising. A revelation. My bike is stock except for a Yoshimura slip on.
Posted by Unknown on 27th Oct 2015
Works exactly as advertised, simple to install.
Posted by Kevin on 9th Oct 2015
It's a band-aid but a simple, cheap and very effective band-aid for the snatchy/surging/stumbling during low RPM light throttle. Bike is much smoother and more enjoyable but does run rich in the aforementioned conditions so there is the occasional backfire. An acceptable trade-off for the benefits especially considering the cost. A full PCV with associated intake/exhaust mods and custom dyno tuning is the better alternative for roughly 20x the price. I'm very happy with the dongles.
Posted by KTM Mike on 4th Sep 2015
These dongles do exactly what they said they would - essentially eliminated all of the snatchyness - made the bike much easier to ride in most all conditions.
Posted by Unknown on 23rd Aug 2015
Awesome product! Removes low end stumble and allows to warm up faster.
Posted by Unknown on 10th Aug 2015
Dongles did what I was hoping. I no longer have that irritating surging the engine made on 990 adventure. Before I was using clutch to smooth it out and I stalled the engine several times before in technical riding situations. I really like my bike now. My confidence has been raised. Buy it!!
Posted by Ralph on 8th Jul 2015
Great fix for a snatchy throttle on a 2011 KTM 990 Adv. Rottweiler seems to have got the resistance right pushing the ECU into a far more palatable, richer, fueling map which has made an almost revelatory difference to the bikes 'rideablity'.
Posted by Matt Myers on 5th Apr 2015
Quick fix for the 1290 SD-R Smooth/predictable transition from cruise to WOT. $ well spent.
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