"Disappointed, but a good effort. " I basically wasted $200 on an ECU that was ultimately irreparable. 2003 Nissan 350z. Had a couple issues. The back and forth (which I'll get into) is partially my fault however I will also have my criticisms. First it had no communication with other modules in the car. Can't read anything so i drop it off. Got repaired. (First time) Turns out I also lost injector signal which was the cause of my crank no start. I, trying to be helpful as possible did, the most deep dive troubleshoot possible. With sensor test, voltage and signal readings with a scope and DMM through the harness, checked for shorts and grounds, and even brought in corrected information because the factory service manual was wrong in regards to wire numbers and their functions. All my tests were documented and I gave page references from the FSM to each test and graph I went off of. Brought it back for repair and all injectors worked. (I had rebuilt them and bench tested them during the troubleshot)
Drop it back off. (Second time) I get a call and am told they don't see anything wrong but asked me if I still wanted them to replace the driver. They do. The car runs now! Very poorly. Somehow I lost ignition coil signal on two cylinders after warranty repair. During the first troubleshoot all ignition coils were confirmed to fire and receive signal at each cylinder. Bummer. drop it back off. Here's where I get irritated. I get a call and am told the ECM is fine. No.. it's not. I've checked literally everything and provided documentation. Do not tell me it's fine. I even offered to pay full price again just so they'd work on the thing (I did not) I was told the driver for injector signal is also responsible for the ignition signal. I'm not smart enough to argue with that so I just go with it and they replace it again. (Third time)
Miraculously it's even worse. came back with ignition signal missing on four cylinders. Will only run if I stomp the throttle then dies. I'm tired of going back and forth and the third time they kind of made it clear they're tiring of working on it and I'm wasting my time at this point. I give up.
Here's the criticism. They advertise repairs for Nissan/Infiniti ECMs, but they don't have a test car to verify results. A bench test is better than guessing but you can't really tell what's going on without a full car to run diagnostics on. I'm sorry, I don't have the knowledge to understand the circuitry of the modules but I CAN tell you what it's doing / what it's not. You can't tell me "it's fine" when I've spent three weekends doing diagnostics and reading graphs on the car that worked flawlessly prior.
With a company this large, you'd expect an actual certified, guaranteed repair. Instead, the response is always 'it's been repaired' when in reality, it still doesn't function properly. I'm sure for the cars they do have this isn't an issue and I get it, yall can't have a million different cars. BUT it would be wise to get a test mule because Zs, Gs, have always been popular and they're into classics. People will continue to have these issues and if you're providing a cheaper alternative to a aftermarket tuner ECU or another used ECU that's money to be made.
I went out of my way to try and make things on their end easier instead of "here's the DCT code I'm getting have fun" and it feels like it was for nothing. I as a customer shouldn't have to do the testing after every repair to see if things are functioning properly. I'm not even mad. They tried and I'll give them that but still, I'm out 200 bucks and all I got is another fried ECU to hang on the wall.
The positives: they are willing to try again under warranty, the staff are polite, and the turnaround time is fast. Just a day. Beyond that, I wouldn't recommend relying on their 'repairs' for critical ECU issues. At least if you're a Z or G owner. read more
