GCU-H - H-Pattern Gearbox Control Unit
WOT Shift Spark Cut & DBW Blip Rev Match - Closed Loop - USB programmable
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Overview Video - Watch to Learn More!
For Road Race - Street/Strip - DBW (Drive-by-wire) cars with Manual Transmission
Summary of Operation
Our newest Gearbox Control Unit brings the features of our sequential transmission module to any car with a manual transmission.
No-Lift Shifting at Wide Open Throttle (WOT) via spark cut allows for quick, smooth and
consistent shifts. Under braking during downshifts a throttle blip provides seamless rev matching.
Important Information: Clutch Switches and Sensors
The most critical input for the GCU-H system is the upper clutch pedal position switch as it determines when a shift is happening.
During a WOT upshift (accelerator is above WOT%) the clutch press ON/OFF determines the duration of the spark cut.
Downshift (braking first, THEN clutch press) it initiates the Drive-By-Wire Blip.
Upper clutch pedal position switches come in a variety of configurations, aka:
- "Upper Clutch Switch"
- "Clutch Pedal Position switch"
- "Cruise control release switch"
The most common upper clutch pedal switch is 12V active LO (12V unpressed, 0V (GND) pressed).
We also support the following:
- 12V Active HI (0V unpressed, 12V pressed)
- 5V Active High (0V unpressed, 5V pressed) (Switch or Variable Sensor)
- 5V Active LOW (5V unpressed, 0V (GND) (Switch or Variable Sensor)
If your vehicle is not on our supported list we can help determine which clutch pedal switch/sensor is in your car and which signal wire we will need to tap. Features
- Dedicated Hi-Current Ignition Coil Power Circuit (12Vin/12Vout)
- Close loop shift timing strategy based on clutch position data.
- Torque Recovery, ramp-in ignition power to the coils post-shift for ultra smooth operation.
- Preloaded with track tested base calibration to get you started.
- WOT pedal (%) - Min accelerator pedal % to be consider WOT
- Spark Cut (%) - Depth of spark cut
- Spark Cut Duration Timeout (ms)
- Spark Cut Torque Recovery (ms)
- Blip Target (%)
- Blip Duration (ms) - Duration of throttle blip after brake & clutch press
- Brake Pedal press % (if applicable C6 Corvette & 5th Gen Camaro, etc)
- Clutch Pedal press % (if applicable ex 08-13 Corvette & 5th Gen Camaro)
- OEM Throttle pedal connectors: Plug-n-Play
- Red Power LED & Blue BLIP ACTIVE LED on front panel
- Passive design, vehicle operates normally when power to module is switched off.
- USB programmable (set it and forget it) with Android App or Windows PC program
- Every unit end-of-line tested
- Made in the USA
Technical Notes
