Cummins 2005 ISL low power AGAIN!
What we thought was a sticking exhaust brake on our MH is now a, They don't know. The exhaust brake checked out good and functioning properly. $515.67 later and Cummins West thinks it could be a faul...
Forum Discussion
Odd thread. My understanding has always been that ISC's will normally run 35 psi boost, but ISL's are between 25 and 30, mostly 25....
