It is possible I was using the incorrect files; I will double check them and try again. Thanks for the advise. I do have a check engine light and keep a paperclip handy. I will check for any codes...

Thanks Jeff! I've been real happy with the Howell system. It is very possible that I didn't disconnect the battery ground before welding so I ordered a replacement (or spare) ECU. I will check the...

Hi - I have a 1979 CJ7 with a Howell EFI on an AMC360. I added the Howell about 15 years ago and it has been great. Well, it ran open loop for at least a year before I figured out that it needed...