Fuel injection tuning

Tuning Specialist

The ktms are variable - an occasional few run fairly smoothly and some (most) surge a bit and many are super abrupt on the on / off / barely on throttle operation - kind of like what you don't want on a big, strong, torquey bike.

Many bikes are just not enjoyable to ride on a trail. The fuel injection tuning is one of the few faults of the bike.
It's what happens when, I assume, manufacturers sublet out FI tuning to non-motorcycle specialists for emissions and drivability tuning.
It's possible to make the KTMs run much smoother - better.

Proper tuning fuel, ignition, crossover tables, device activation tables will smooth out the lowend and improve power delivery linearity to make the bike sweet and nice to ride. (and 'oh darn", will make more peak hp, too  :-)

Wheelsmith / Factory uses the EC997 dyno - with Realtime HP and torque readout and a 5 gas Exhaust Analyzer - and that's why results are likely to be better than a dealership level dyno that only "tunes to an air-fuel ratio" (as if there is some magic afr).

I've heard reports in MotorcycleUSA.com that common dealership level dynos can take "120 dyno runs to tune" a KTM. That's abusive to your bike. It's fine for a magazine test bike, but not yours.

The Factory Pro EC997 and it's 5 gas exhaust gas analyzer derive loads more tuning information per dyno run - providing the most tuning information in less "engine runtime" -  6-10 runs would be max engine runtime.

Wheelsmith has been tuning KTM twins since the first 950's came out - in fact, the 950 jetting kit that Factory Pro / Wheelsmith developed is the best performing 950 jet kit available to this very day.

Wheelsmith (Factory Pro's R&D division) is available to tune your 990 - be it TuneECU, Tuneboy or a simple power commander.

Note: A power commander is limited in what it can adjust and can't tune for maximum smoothness as well as TuneECU or Tuneboy.

We suggest TuneECU at this time - it's reflashing the stock ECU with custom mapping and tuning -
TuneECU is more reliable than adding an aftermarket fuel controller.

Wheelsmith Tuning Direct:

415 472 4962  m-f, 9-5

Movie and sound

.....................................

Feedback
TuneECU re-tuning and test riding

Oct, 2015

Hi Marc,
You dyno tuned my trackday 990 last year. You might recall that my wife and I went over to Point Reyes while you had the bike.

Just wanted to say thanks for a good job and I am a satisfied customer. The 990 is running smooth and crisp and the throttle is much more behaved.

When the opportunity arises I have posted the good results of a tune done by you in your shop. Hope you have had some business as the result.

sincerely,
Bob S.

    Nov 25, 2012   
"I want one."

Raul Meono
Wheelsmith Racing

    Dec 28, 2012  
       Hello Marc!

Riding home last night thru traffic and lane splitting was successful.
Previously, that would have been a very scary proposition but the 990 is
pretty smooth in that environment now. Thanks.

Thanks again for your successful efforts.

      Steve Marker