All ECU tuning is done via bungy probes that have a needle tip to provide an electrical connection.
We do not solder or modify the ECU board at all. Once we receive the ECU, we will prepare the tune file and then ship it back to you for reinstallation. You can also send us a new ECU to be flashed. To bench flash the ECU, you must remove it from your vehicle and send it to us ( See Instructions Here). If you decide to take it to another tuner for an upgrade, all flashing ability is retained.