ISX sudden boost psi change

[Carter]

(09-22-2022 )Rawze Wrote:  

(09-22-2022 )Carter Wrote:  After reading all the information on this site, I’ve thought about doing an egr tuneup myself. We are allowed to fix things on our trucks that we can do ourselves, But, I have to tread lightly when it comes to spending money on account.
Thank you to everyone on this site for all their help and information. I will see what I can do for this particular truck and problem in the coming months.

It sounds to me like the typical neglected, poorly-spec'd truck.. then everyone wonders why it does not run right.

So true. What does someone in this situation do? I’m governed at 1600 rpm in all gears but 8th which will reach 1800 rpm. As long as I keep my boost down and its gaining rpm after each shift even though too low of an rpm am I doing any good?