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UK suppliers of high quality performance motorcycle
parts & accessories
JHS Racing are agents for these outstanding motorcycle performance products:

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 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.

Custom mapping service
JHS can provide a custom mapping service for the Power Commander, which incorporates dyno testing to optimise the unit's settings to uniquely suit your bike's engine. This service ensures that you benefit from the greatest gains in power and torque at all throttle openings, eliminating the flat spots and inefficiencies that are present in manufacturer ECU units to fulfil emissions regulations.

	The top graph shows the horsepower curve accelerating at a 40% throttle opening and 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 that same combination with the PC installed and you can see that the line is nearly straight. So the rider will feel a large improvement while riding the motorcycle and it is very possible that the peak wide open throttle horsepower is unchanged.

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 one hundred and forty 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. The Tuning Link has the ability to map fuel curves in both 'static' and 'dynamic' modes. This assures that the generated fuel curves are correct for both steady state cruising as well as during aggressive on/off throttle movements. This technology allows the Dyno operator to accurately 'optimize' the bike in a very short time, regardless of the bike's modifications.

JHS RACING are able to supply and fit the entire range of products from Dynojet and Power Commander. We also provide these services at our workshop:

• Dyno power output tests: £29.50 inc VAT



• 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 £120.00 inc VAT

JHS Racing are Bristol's No.1 fully-trained and authorised Dynojet Power Commander tuning centre

We are now supplying the
NEW PC5 version too.

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

Power Commander custom map service

Have your Power Commander software specifically optimised for your engine, with inclusive dyno run. A custom map for most motorcycles is £149: Suzuki SV650/1000 (2003>): £149.00 GSXR 600/750/1000:  £149.00 Bandit 1250 (2008>): £149.00 Triumph Daytona 675 (2006>): £149.00 Street Triple 675 (2008>):  £149.00 Ducati 748/916-998: £149.00 749/999:  £149.00 Aprilia Mille R & Factory: £149.00 For certain models a custom map is £199.00 including: Ducati 1098 & 1198 (Power Commander fitting fee may apply) KTM Superduke & RC8 All MV Agusta Moto Morini Corsaro Benelli Tornado & TNT 1130 All Harley Davidson For further information call 0117 986 8844

As an Authorized 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 Quickshift 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 £235.00 for most makes & models.