For C20LET conversions without a F28 gearbox. The F28 gearbox has a 1st gear detection which is not found on other gearboxes like a F20 or F23. The motor management will go into its emergency program which will give you a reduced power output. This can be seen on the dashboard the motronic light will light up. This is due to that the sensor is not connected to the motor management.
This chip has been programmed to bypass this problem. The chip can be easily clicked into the socket in the motormangement. All the standard Opel functions are still active on this chip.
It is not a tuning. It can however be combined with tuning. Please choose this togehter with the chiptuning for c20let in that case.