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
Ivylog wrote:redguard wrote:Ivylog wrote:
I have a 03 ISL and 23-24 is all it 's ever done. Plenty of power and I'm on the heavy side.
I believe you have more boost than you think>??
ISL 425HP has 35-37 lbs boost max
ISC 350HP Has 30-31 lbs Boost max
these are documented facts
My gauge does not go to 30 plus my Aladin which displays electronic data shows 100% power at 23psi. I 'll trust my Aladin system and 10 years of operation over your facts on a later ISL & ISC. I also have a 97 8.3 and 23-24 is all I get out of it too.
PS: fortunately I do not have a variable vain turbo.
If your ISL is a 370 or 400Hp its max boost is 32lb(max) so either your gauge readouts are wrong or your running about 3/4 possible horsepower
comparing an old manual 300HP 8.3 boost to a newer 2003 350HP is not
a fair comparison as those old 300/325 manual 8.3 were not any power house.I had a 1997 325 8.3 and it was suspect at best for power
