I have a spuratic issue while under load either puilling a trailer or getting on the highway with my pedal on the floor. I'll feel a miss/burp when the RPM's peak. Its happened twice in the past month. I don't get any codes on the odometer. I don't have an analyzer to plug in. I've heard could be the VP44, the CPS. Could it be anything else? I see an issue, not sure what it is but want to get in front of it now. Really don't want to pull the VP44 unless I have to.....