LenBert Dyno Tuning Service

Richmond Motorsports offers professional EFI and carburetor tuning performed by owner Len Bertrand of " LENBERT DYNO TUNING"


 Motorcycle Dyno tuning pricing is as follows:

Interceptor-type tuning devices (e.g. Power Commander, Bazzaz, etc.):  

  • Street bikes: $399

  • Race bikes: $299 

  • Additional maps for bikes with dual map capability, if requested: add $100

Interceptor-type devices are a lower-cost method of refining air/fuel ratios to optimize popular add-ons like exhaust systms and air filters in engines that are otherwise "stock" (as they were when leaving the factory) internally. They also allow you to return your bike to stock easily if desired, and because your original tune remains in the ECU, they won't affect your warranty.
Listed below are changes that we can make for you (Note that some versions allow only fuel control):
Improve throttle response
Smoothen idle and mid-range
Reduce backfiring on deceleration
Revise fuel & ignition maps to accommodate modifications and increase horsepower

-Direct ECU tuning - $150 per hr + firmware and licence to unlock ECU

Direct ECU Tuning although a more costly way to tune your bike, allows us to make much more in-depth adjustments beyond fuel and spark, which are usually only accessible with Interceptor-type controllers. Keep in mind that reprogramming your factory ECU can void your warranty on a newer bike, and therefore Interceptor-type devices may be preferable.
Some of the popular adjustments we make in re-programing your ECU are listed below:
* Remove throttle restrictions
* Increase rev limit
* Remove factory ignition timing retard
* Remove speed limiters (they are gear-dependent)
* Reduce excessive engine-braking
* Improve throttle control & response
* Revise fuel & ignition maps to accommodate modifications and increase horsepower
DYNO TIME - STREET BIKES vs RACE BIKES -  Generally, street bikes require more tuning time on the dyno than race bikes because we have to make sure the mid-range of the fuel map is optimized for cruising and intermediate throttle ranges as well. With race bikes we are focused on fueling at wide open throttle. Of course we still have to make sure the idle, off-idle and mid-range fueling is close enough not to cause any transition problems between off-idle and full throttle, so if it's way out of range we're going to adjust it back into the satisfactory range.
TIPS ON INTERCEPTOR TYPE DEVICE FUEL MAPS -  Many of you may install your own interceptor type contoller like a Power Commander or Bazzaz, and select a developed map that is a download from a similar set-up, or use the supplied enhanced map that came in the device. Be skeptical of using any maps that have percentages of 20% or more. Most bikes with stock engines, aftermarket exhaust and air filter, clean injectors and a good fuel pump and fuel filter, don't often require more correction than 20%.  Another reason for high correction percentage values can be the result of an incorrect air/fuel measurement during the process of development! In other words, the oxygen sensor information reported during the testing and map development may not have been accurate. There can be a few reasons, like poor location of the sensor, exhaust system leaks, or an AIS (Air Injection System) that is not dissabled.  It's quite common for us to see EFI bikes - even with stock exhaust systems - come to us running too lean at idle and into the 15% throttle opening range so they can meet emmission standards, yet still running overly rich at full throttle! With a slip-on exhaust and especially a full competition exhaust system, they will be VERY lean in the off-idle and cruise ranges causing a jerky or surging feeling when riding.  This will never cause any damage to the engine because it is not under heavy sustained load. If your bike's fuel system is in good shape, there is usually enough fuel delivery at wide open throttle in factory mapping to avoid engine damage.
Note: we don't recommend you test the limits of full power under sustained loads until your bike is Dyno-Tuned!    
IS YOUR BIKE READY FOR THE DYNO? - An EFI (electronic fuel injection) bike should be running fairly well before you book it in for tuning. However a carbureted bike can be an exception!  On an EFI bike the factory tune in the ECUs are never out far enough to cause the bike to run terribly with typical bolt-on exhaust systems. If your EFI bike is running very badly, it likely has other issues not related to tuning and needs diagnosis. When you bring your bike in it should have at least the following:
  • 1/2 a tank of fuel
  • Tire pressures adjusted to spec
  • Fresh oil and oil filter and its oil level within spec
  • Antifreeze level within spec
  • Cooling fan operation verified
  • Chain lubed and adjusted to have at least 1inch of freeplay      

For further details, recommendations and booking contact Len at Richmond Motorsports - 613-838-9996