A customer asked for his Astra VXR to have a run up on our rolling road the other day, as he had recently bought it and was curious about the power and torque output of the car which was running a full 2.5″ Milltek exhaust system and an off the shelf ecu flash.
The ecu reflash had been carried out by an authorised dealer however it had not been check on a rolling road (as the installer did not have one).
The graph from the rolling road session can be seen below:
Whilst the car was producing good torque, and felt fairly quick on the road due to the dollop of bottom end torque, power was quite a way off the expected (by the customer) figure.
The moral of the story?….. Always have an ecu remap correctly set up on the car, not just an ecu reflash.
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