Well, except for the length of time it took and the lack of communication, the experience was good. We sent in a customer's ECM for testing and to see if it was repairable. The website states a total turnaround time of 10 days maximum. However, it was more than 3 weeks before it was finally determined that the ECM was not repairable, we requested a new one (reman, programmed from the original one), and received it back (almost a month total). Our customer was NOT pleased that it took so long. When we received the replacement unit, it was layered thickly with dust, looked like it had been sitting unpackaged on a shelf somewhere for a couple of years. We had to clean the unit before we could take it and install it in our customer's truck. However, since it has been installed, it seems to be working properly so far. I had to constantly contact the company to get updates on the progress, and they were not always responsive. This was our first time using this company, and I'm not sure we will use them again unless the situation does not warrant needing the ECM repaired and/or replaced in a timely fashion. I used email AND telephone to communicate with the company. They sometimes responded within 24 hours, sometimes not at all. I wouldn't use this company if you are in a hurry for something.