Which older cats WILL work with eld?

Any electronic engine should work with elogs. If it has a diagnostc port should be fine.

 

I would get in touch with the elog manufacture and ask them.

 

I would think it depends on what protocol the vehicle runs under. J1939 is the current standard and has been in use from the late 90's/early 2000's to present. Prior to that I believe it was the J1587 protocol that was used by heavy trucks. Not sure what standard an older Cat uses and what elog devices would be compatible with it though. Like Swaan said, might be best to call the manufacturer and find out.

 

I have a friend with 2 trucks
1 is an 07 international with a cat C15
the other is a 97 W900 L with a 12.7 60 series detroit.
the ELD will not work on the detroit. numerous attempts at a remedy and it's a no go

 

If your cat has a 7CZ serial #, you’ll be fine.

 

1mm will work.. same ecm as 7cz and 2ws and 6nz.