11-08-2018, 03:27 PM
You might want to consider buying the Cummins Inline Data Link Adapter. You can get Chinese knock-offs for under $200. It will allow you to adjust all the ECM parameters. There is an excellent website for information - http://rawze.com/forums/index.php Go to the 'ISX Related Help' page. There are also some great documents at http://rawze.com/forums/forumdisplay.php?fid=38 that will answer a lot of questions for you.
Jon & Chris Everton
1986 40' Dog House #86
450 hp ISM 5 spd ZF Ecomat 2
2004 Range Rover L322 Toad