06-01-2015, 07:08 PM
Depending on the state you have your coach registered in, and what their restrictions are, it's possible to remove the EGR and get the better mileage. There's a lot of forums out there that discuss this, with reliable and accurate information. Here's a link to one for the series 60 that doesn't involve reprogramming the ECM: http://www.uglyfixcharlotte.com/
Jon & Chris Everton
1986 40' Dog House #86
450 hp ISM 5 spd ZF Ecomat 2
2004 Range Rover L322 Toad