Short story- Bought a Sniper, installed per instructions, ran for 150 miles and it quit. Sent back to Holley under warranty, got it back, hooked it up....same failure -"searching for ECU". Sent it back again. Repaired...was told it needed a firmware update. Got it back, verified it worked and immediatly sold it for half what I paid for it to a " Holley dealer" from the Holley Sniper forum on the Holley website. I HIGHLY recommend anyone contemplating buying this POS to spend some time reading thru that forum and take note of the endless issues they are having. As people are saying, it's not if but when it's going to die. In retrospect, I can't help but wonder who thought mounting an ecu on top of an engine with the heat and vibration was a good idea? I had lost confidence in it from the start. Thank God it died in my driveway and not out in the desert 50 miles from nowhere with the wife and kid. Put the Edelbrock carb back on and she runs as good and I'm not scared to drive it again.