yes, these logs do not show any revving. I have driven this truck four times, the first two out of town eight miles there and also back.. It ran fine, no stalling, no problems accelerating. (again without the map). Then on the 3rd and 4th time out of town, would not accelerate properly in town and was stalling. Barely got it throught the intersections. but highway as running decent but discovered only got 6 miles to the gallon. lm pretty sure this motor is supposed to be getting a few more mpg than 6. Gonna get valve job. Also, compressed air blowing by the intake valve at an significantly high rate as compared to the other cylinders. Im betting that these problems were affecting my map sensor and that is what was stimulating the surging?. My best guess from the evidence. If anybody has any idea other than that Im all ears. After repair I will post a log with a drive around town and go from there. Thanks again, for everybodies help on this forum.