I wrote geartronics but have not heard back yet. I installed a gear position indicator (not geartronics) and had to leave the original factory connector on the car side disconnected because it wouldn’t let the digital indicator turn on when I hooked it up. The aftermarket gear indicator is now plugged directly into the Suzuki gear position sensor and there is a connector on it that is supposed to allow you to hook the factory harness back I just left disconnected. I’m worried that the pneumatic system might use the factory Suzuki gear position indicator and by leaving the car side connector disconnected I will not have correct operation of the pneumatic system. Not sure if anyone has experience with this.
They wrote back with the wiring diagram. Here it is. Charley feel free to add it to the wiring diagrams.
Thanks Crit! I will add it to the Resource Library
Charley, here's another wiring diagram for the car side but unfortunately radical sent the wrong one for my car, this one is likely for a Gen 2 and or FI car as the diagram is dated 2009.
Crit,
That connector shows that your system isn't using the gear position sensor. Mine was the same connector, and had that same pinout. In your car, the position sensor is only used for display to the driver.
Geartronics can help you upgrade to a closed-loop controller where the the gear position sensor is used to monitor the shifts as they happen to make them as fast as possible and more precisely match engine speeds.
Hi John! Thanks for writing and that’s awesome that you had the same setup I currently have. How hard was it to re-wire the system for the upgrade and I’m assuming quite a bit of track and bench time to configure proper engine cut, blip RPM and pneumatic force configuration for every gear.
Hi Crit, yes -- I have a lot of dyno and tune time in my 07 SR8 (#42) with its MoTeC M150 ECU/GCU. I had to come up with all the parameters myself, with lots of time spent tweaking. That work continues, though my recent track days were very successful.
With the 09 SR8 (#87)and this new Geartronics GCU, the approach is a bit different. Geartronics prides itself on providing bespoke tuning for each application, and they are ready to provide hours of support (both in the shop and on track) to get me "rock-solid" shifting. I'll have more information on that in a month or so (I'm out of town on assignment for a while).
It's shifting pretty well right now and I'm not competing so will probably leave it for a while. Geartronics sounds like a great company, wish they were stateside.
@charleyhradicalsportscarregistry-com
Radical found the right diagram. Here is the loom wiring diagram for the early shifters that didn’t use the gear position sensor. Feel free to add to the wiring diagrams.
Thanks Crit!
