JHS Racing Bristol & South West motorcycle workshop and performance centre Bristol & Bath motorcycle MOT test centre
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JHS Racing are UK suppliers of high quality performance motorcycle parts & accessories:

Ohlins suspension sales & service Bristol Hel motorcycle brake lines Bristol
M4 motorcycle exhaust systems Brembo motorcycle brakes sales & service Bristol
Yoshimura motorcycle exhaust systems
Akrapovic motorcycle exhaust systems Dynojet Power Commander sales & service Bristol
Remus motorcycle exhaust systems Sigma motorcycle slipper clutch

Dynojet Power Commander motorcycle fuel injection control module  

Dynojet Power Commander Installation & Set-up

What is a Power Commander?

The Power Commander is a fuel injection and, on some models, an ignition timing adjustment unit that plugs 'inline' with the bike's stock ECU (Electronic Control Unit).

Changes are made to the bike's fuel and ignition curves via the Power Commander's onboard microprocessor. Using this technology we are able to provide a wide range of adjustment without making any permanent changes to the bike's ECU.

The Power Commander uses original-equipment style connectors so that no splicing or cutting of the harness is required. Simply removing the Power Commander unit returns the bike to its previous stock condition.

  Dynojet Power Commander performance graph  
  The top graph shows the horsepower curve accelerating at a 40% throttle opening; the lower graph shows the corresponding air/fuel ratio. You can see a large horsepower increase between the two. The red curve shows a typical stock motorcycle with minor performance modifications (slip-on exhaust). The blue curve shows the same combination with the Power Commander installed - you can see that the line is nearly straight. So the rider will feel a large improvement while riding the motorcycle, whilst it's possible that the peak, wide-open throttle horsepower remains unchanged.  

The Power Commander can be supplied pre-programmed with your choice of several settings, based on the modifications to your bike. The unit also comes complete with software and cable link that allows you to change between different maps or make adjustments to a map file.

Dynojet Fuel Injection Tuning Link
The Dynojet Fuel Injection Tuning Link is an innovative software application that allows the automatic fuel curve optimization of a Power Commander equipped motorcycle.

The Tuning Link software interfaces the Power Commander with a Model 250 Load Control Dynamometer. The Tuning Link software controls both the Dynamometer and the Power Commander at the same time. By utilizing the Dynojet 'real time' air/fuel ratio monitoring equipment and latest 'Load Control' Dynamometer technology, the Tuning Link monitors the current air/fuel ratio at over 140 different points. At the same time, the Tuning Link automatically calculates the correct fuel adjustment to achieve the optimal air/fuel ratio. Once calculated, the Tuning Link uploads these new fuel values to the Power Commander and saves a copy of the file.

JHS RACING are able to supply and fit the entire range of products from Dynojet and Power Commander.

  • DynoJet Power Commander 3: from 285
  • DynoJet Power Commander 5: from 299
  • DynoJet Power Commander Fuel Controller: from 211.15

Power Commander Fuel Controller unit
Power Commander Fuel Controller

The Power Commander FC is a new fuel management device pre-programmed with make/model specific maps. The FC unit also enables you to modify or change these maps on the fly, without a computer.

Select between a Power Commander FC map, custom-built maps, or even fine tune low, mid or high rpm ranges while sitting on the bike, with no need for a computer.

We also provide these services at our workshop:

Learn more about the Power Commander by visiting the Dynojet UK web site - click here

Dynojet Quick Shift Sensor
Dynojet Quickshift sensor - installation & set-up The Dynojet Quick Shifter Sensors are compatible with USB Power Commanders and allow full-throttle, clutchless up-shifts. These high quality sensors provide fast, accurate and reliable shifting in conjunction with the Power Commander. Sensors are attached to the gear linkage and connect into the Power Commander expansion port. All sensors include a software utility which allows the user to adjust the "Kill Time" and "Minimum RPM Shift Point" within the Power Commander Control Centre Software. From 192.00 for most makes & models.

Authorised Dynojet Power Commander dealer, installation & set-up

JHS Racing are Bristol's No.1 factory trained and authorised Dynojet Power Commander tuning centre, supplying & installing the PCIII, PCV and the NEW PC Fuel Controller units.

Dynojet Power Commander - Bristol authorised dealer & installation specialist
The Power Commander is a modular unit that plugs straight into your bike's existing connections.

Power Commander custom map set-up service

Our custom mapping service configures and optimises the Power Commander settings to uniquely suit your bike's engine.

A custom map ensures you benefit from the greatest gains in power and torque at all throttle openings, making the machine feel crisp & responsive, eliminating the flat spots and inefficiencies that are present in manufacturer ECU units to meet emissions regulations.

Our custom mapping service is 179 for many popular motorcycles or 199 for some high-end superbikes such as the Ducati 1198, KTM RC8, BMW S1000RR, as well as all Harley Davidson.

Dynojet approved tuning centre in Bristol

As an Authorised Power Commander Tuning Centre we at JHS Racing can optimise the fuel and ignition mapping for your motorcycle. We can also develop custom maps for special applications. As a Dynojet Approved Power Commander Tuning Centre we have the latest state-of-the-art Dynamometer and testing equipment. This includes the new Dynojet Model 250 Load-Control Dynamometer and the Dynojet real-time Air/Fuel Ratio module. In addition, our technicians have successfully completed the Power Commander technician training course at Dynojet UK Ltd.

DynoJet approved testing centre logo.

Dynojet Power Commander available from our online store ... click here to visit

  2017 Isle of Man TT.   20-05-2017

The JHS Racing road racing team will again return to the Isle of Man TT Races, fielding experienced road racers Michael Russell and Dave Moffitt.

JHS would like to thank Optimum Access for their continuing support for the team. Optimum Access specialise in unique security access systems for your premises. ...

Read more ...


  JHS Racing Limited, Unit 3-4, Unity Court, Unity Road, Keynsham, Bristol, BS31 1FU

0117 986 8844

Registered in the UK no. 6399852
All material Copyright © JHS Racing Limited

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