I have an 87 Allante that is running on 7 cyls as #5 isn't firing. No head gasket problems. I've checked the plugs and wires, switched them around with other cyls, checked the compression and all cyls and they are running on 150-155 lbs compression. I've switched the injectors and still #5 has no fire. I've been told the ecm "could" be the problem. Any ideas would be greatly appreciated.