I thought I would share some info about a fuel injector module I have made, It is based on the same principle as the power jet commander from M and P it is connected in series with the air temp sensor and just tells the ECU it is colder than it actually is then the ecu puts in more fuel, I have a racefit exhaust and never been happy with the loss of low down power, this mod has virtually eliminated the flat spot and made the throttle so much more responsive and smoother I had a bank of sensors with dip switches to change the output, I settled on a 4.7k thermistor. this gives about a 12 degree difference, the thermistor changes its resistance with temp so will keep a 12 deg difference when ambient temp changes. All you have to do is put a 4.7k NTC thermistor in series. If people do not fancy making their own, I may make up some adjustable modules for people to fit if enough interest, these would be about £22 with post. Honda CBR1000RR 2011 Power Jet Fuel Commander Controller Honda CBR1000RR 2011 PowerJet Fuel Controller POWERJET FUEL CONTROLLER Most fuel injected engines run very lean and this is fine except for when demanding maximum power output on the track especially when you have sport exhausts installed. Being able to simply adjust the fuel/air ratio in those conditions would be wonderful wouldnt it? The PowerJet Fuel Controller allows just that! You can adjust the fuel map from -4% to +10% by selecting one of the 10 settings. We even incorporated a stock setting which means no change compared to stock. Our PowerJet is a simple yet complicated device. It measures the outside air temperature very close to where the stock sensor is located and adjusts the signal from the OEM air temperature sensor to the ECU to make use of the built in Air Temperature Correction factor that is built into every stock ECU. What this accomplishes is that the ECU is told that the intake air is a little cooler than it is and the ECU will respond by injecting a fraction more fuel depending on the PowerJet setting. You as a rider will notice a substantially improved engine response when you twist the throttle. The neat thing is that when under constant load (constant speed) the oxygen sensor in the exhaust will make the ECU correct the fuel/air ratio back to stock! However as soon as the system notices an increase in power it switches from closed loop (oxygen sensor feedback) back to open loop (no feedback) and will correct the fuel/air ratio by the amount you selected on the PowerJet. PowerJet can be easily installed by plugging it in between the stock AIT sensor which is usually located somewhere on the airbox and the bikes wiring harness. Each PowerJet comes with the exact plug in connectors and installation will normally only take a few minutes. Finding the air temperature sensor usually takes more time than plugging in the PowerJet. You can leave the PowerJet sitting under the bodywork somewhere as it is designed to be rugged and waterproof. After figuring out what setting works best with your specific engine/exhaust/intake combination you typically do not need to adjust it any more
I noticed the boosterplug mentions the on off throttle response, I did not even think this was a problem until suddenly it was smooth on and off the throttle. It has saved me buying a PCV. also when cruising or fixed throttle for a few seconds your normal closed loop system kicks in so does not run extra rich, thus helping fuel economy
