A car arrives to tune with complaints of poor dynamics and the owner's insistence on "flashing" the car to add this dynamics. As a result of the engine diagnostics, the crankshaft retainer is displaced due to a broken key and consequently the ignition timing is 18 degrees too late, the fuel filter is clogged and two "half-dead" ignition coils are found. You don't need to "sew it up", you need to repair it. By the way, this car has already been "flashed" at another service, but for obvious reasons there was no improvement. Therefore, you should call the professionals at ecutools.eu. There are many such cases when car owners come back with defective cars, but after flashing them at other service stations.