ISX sudden boost psi change

[Bengy88]

Ok well you need to do what you gotta do to keep those rpm’s up whenever you can. This is why I hate when my customers buy Ryder and Penske trucks. They are mostly all specked with high gears, overdrive transmissions, limited to 60 mph, have progressive shift, and lugged to death. I worked for Ryder a few years and the specs I seen trucks have were crazy.
If you want you can send me the last 6 of your vin and I’ll screenshot the specs of your truck for you from freightliner.