I’m new here and I have some questions.

[cowboycurtis]

[attachment=6082]I bought a 2007 Peterbilt with an ISX450 and 990,000 miles about a year ago. It has the EGR removed. The check engine light is always on. Also the manifold pressure gauge on the dash runs at about 22psi for max pressure. What does a typical ISX450 run for manifold pressure?

This truck seems to be a little short on power. I have 2 2003 Freightliners with 12.7 Detroit’s that will walk away from the Peterbilt.

What should I be looking for and what are my options?