Chose ECU Testing because of the feedback, so was really surprised how bad they were. If your unit is repaired and there are no issues, fine, but should you have a problem like we did, they will not communicate with you. The ECU had to be fitted by a Ford Dealer as it would need to be re-programmed. The dealers informed me that it was not working, so I suggested speaking to ECU Testing, you cannot get through to them, we waited 25 minutes, so sent them an email for them to phone the dealers, never even bothered, a few more emails, never answered, one reply from a guy called Craig, after that nothing. I had to buy a reworked unit from another company, they were great, wish I went to them first. My advise, try another company first.