Fitting instructions for Geartronics GPI
Contents
1. 2 connectors by inserting a small screwdriver into the releasing latch and pulling the housings apart DO NOT pull on the wires to separate the connectors as damage may result Step 4 Plug the connectors on the Geartronics loom into the two connectors you separated in step 3 Run the Geartronics loom alongside the existing loom on the left hand side frame Secure with the cable ties supplied in the kit Step 5 The Geartronics control box should be fitted behind the fuse box located under and in front of the left handlebar The control box should be mounted with the connector at the bottom so as to reduce the possibility of water ingress Step 6 Route the display cable up and along the top of the instrument cluster and secure the display housing to the top of the cluster using double sided adhesive tape provided Take care not to make sharp bends in the display cable as it is quite fragile Step 7 Making the power connections The black earth wire should be secured under the lower left hand instrument cluster screw as shown in the photo below The red wire for the 12v supply can be connected to any convenient ignition switched feed On the year 2000 model illustrated it was found that the most convenient supply was that going to the front light cluster The front light wiring harness connects to the main loom using a black rectangular connector located to the left of the fuse box The 12v supply was found on the2. T ST d Sevvvsrcerer a E ay Ps C T E ki 5 The above photograph shows the jumpers circled in pink set to TRE enabled To disable the TRE move the jumper 1 2 to 3 4 and remove jumper 7 8 Please note that jumper 5 6 and the 4 way DIP switch have no function on the Suzuki unit Geartronics Neil Wallace February 2005
3. thick orange red wire Other year models may use a different colour code and if in doubt reference should be made to the appropriate service manual Splice the red wire into the lighting power feed using the 3M Scotchlok connector provided Step 8 Testing the display check that the bike is in neutral and turn on the ignition The display should read N The function of the standard neutral lamp should be unaffected If possible select 1 and 2 gears and confirm that the display reads correctly It will be unlikely that the other gears can be selected unless the engine is running but if the display is reading correctly in Neutral and 1 then it is fair to assume that all is functioning correctly Step 9 Ensure that no wires have been trapped or incorrectly routed then replace the insert panel the fairing and the seat Remember that the fairing is secured using two different types of screw Step 10 Finally road test the bike to ensure that the display is reading correctly in all gears The display should be easily visible both from under the screen with you head down or through the screen with you head up TRE function The standard Suzuki GSX R motorcycle uses an engine management controller that sets the various engine parameters depending upon which gear is selected Such is the responsiveness of the GSXR1000 amp Hayabusa engines that it was deemed necessary both as a safety feature and to make the bikes e
4. Fitting instructions for Geartronics GPI 4 Suzuki Hayabusa Gear position indicator The gear indicator comes configured for use with the OEM Suzuki gear position sensor and is fitted with standard connectors to plug directly into the Suzuki wiring harness The unit also features the so called TRE modification which is designed to defeat the gear dependent mapping strategy of the Suzuki ECU Please refer to the bottom of this document for a description of the TRE function Installation A reasonably competent amateur mechanic using only basic hand tools should be capable of fitting the Geartronics indicator in less than 1 hour Step 1 Remove the screw at each side of the seat and remove the riders seat Remove the 2 screws in front of the fuel tank Lift the front of the tank and support at approximately 45 to gain access behind the engine Step 2 Remove all screws securing the left hand lower fairing and carefully remove the panel to expose the bike frame Note that there are 2 different sizes of screws Remove the single screw amp clip securing the insert panel located to the left of the instrument cluster The centre of the clip should be pushed in allowing the outer part to be pulled out Step 3 Locate the gear position sensor connectors with reference to the photo below Close up of gear position sensor connector The connectors are 3 pin white triangular and have pink blue amp black wires Separate the
5. asier to ride in daily use to sanitise the power delivery of the engine Effectively wnat was done was to soften the throttle response in the lower gears by reducing the amount of ignition advance This softening effect can be noticeable in the first 4 gears and anything up to 2 throttle It s important to note that there is no reduction in maximum power at full throttle A common modification to increase throttle response is to fit wnat has come to be known as a TRE or timing retard eliminator This device consisted of nothing more than a resistor connected in place of the gear position sensor to fool the ECU into thinking that 5 gear was selected at all times Interestingly the ECU was forced into the 5 gear map so as not to invoke the 6 gear rev limiter which governs the top speed of the bike to 186mph on later models Whilst the basic TRE was effective at removing the timing retard in the lower gears it could also cause rough idling and poor hot starting The Geartronics gear indicator contains an active TRE which only sets the 5 gear map when a forward gear is selected the neutral map remains unaltered so that idle quality or hot start performance is not effected The TRE function of the Geartronics gear indicator can be disabled if necessary by moving 2 jumpers on the control unit circuit board as shown below ca ee i gt mi i Ti aes B T 0060699559 iala a T meri m a aaaeaaer pits Se 9 ooo 8 FE m aE
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