>>>*Just curious, are you getting a check engine light? I show one in my files with that exact symptom, we fixed it by installing a 50% restricter in the vaccum line to the EGR valve. Odd one that one was..

BTW: On the highway I assume you are running at a lower RPM? Nice response offroad should be nice response on road, unless off powerband.....*EB

*Beats the he** outa me!....*LOL**...