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 sensor from the exhaust header. 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.
Posted by Thomas on 12th Nov 2017
Smooth!!!!! no stalls in cold conditions anymore.Smooth in low rpm and not too much fuelconsumption.
Awsome for such a low priced Item.
Posted by email@example.com on 26th Oct 2017
Talked to Dave about my 17 ktm 690 enduro with a wings exhaust not starting well in the cold ,he recommended the fueling dongle and was very informative so I ordered one . I plugged it in and just like that my bike starts perfect now and feels like it's running a lot smoother. Definitely worth it and Dave was great to deal with can't recommend them enough.
Posted by Anders Malmborg on 3rd Sep 2017
I have done about 1500 km's with the fueling dongle installed. IMO, the bike runs smoother at low rpm's with less on/off throttle feeling. Well spent money!
Posted by Doug on 22nd Aug 2017
I got this to go with the Rottweiler Intake system and Arrow silencer since I couldn't afford to get the power commander as well at the same time.
The install was super easy, done in less than 10 minutes.
I was amazed at the change in performance, especially from idle to 5K, wow...
Highly recommended mod to a 690r
Posted by Unknown on 5th Aug 2017
After being plagued by the 690 twitchy throttle for years this was a great solution that was easy to install. Be sure to get the O2 plug so you can remove the "lambda sensor" entirely. Damn you California.
Posted by Unknown on 3rd Jul 2017
Dave at Rottweiler performance recommended this after I ordered my arrow pipe. Glad I talked to him my ktm runs great now way cooler than stock and even more power
Posted by Tom Carlson on 30th Jun 2017
It really does work as described! My 2017 Enduro R now runs much more smoothly at low rpms, and at least two bars coolers on the temp gauge. Riding around town on a humid day, with temps over 80, the cooling fan only came on once. And that was only after I'd been waiting at a red light for awhile. I did install the Rottweiler intake and the canister dongle at the same time, but I can't see those affecting engine temperature.
Posted by Dwight Waldo on 19th Jun 2017
I have these on my KTM 1190 r and I have around 10000 miles on them and they work well. I was waiting for them to become available for my Husqvarna 701 and ordered them as soon as I saw they were ready for sale. I am using a K and N filter but plan to go with the Rottweiler intake system. The installation took about 10 minuted including removing the O2 sensor and installing the bung. It does seem to pull a bit better down low and be more responsive. This also makes the possibility of damaging the O2 sensor a non issue.