JHS Racing are UK suppliers of high quality performance motorcycle parts & accessories:

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.

	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

We also provide these services at our workshop:

• Dyno power output tests: £30 (details on Tuning page)



• Supply a custom map for the Power Commander plus full dyno set-up of your bike using Tuning Link software to optimize the fuelling with the custom map feature: from £159.00 inc VAT.

Dynojet Quick Shift Sensor

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.

The Power Commander is a modular unit that plugs straight into your bike's existing connections.

	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 £159 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 Power Commander available from our online store ... click here to visit