Paging Allen or anyone with HPT experience, glitch on the 2/3 shift at dragstrip

[farmtruc]

If the tune hasn't changed much, the mph shift points will be lower than the RPM shift point.

With your vehicle, the rev limiter should feel like the truck just stalls or doesn't accelerate, is it doing that, or is the engine popping or backfiring?

[Blown06]

If the tune hasn't changed much, the mph shift points will be lower than the RPM shift point.

With your vehicle, the rev limiter should feel like the truck just stalls or doesn't accelerate, is it doing that, or is the engine popping or backfiring?

I sounds to me like it backfires, but everyone in the stands was like "why did you let out of it". It feels just like the rev limiter, but the truck doesn't do anything till I let off the throttle. Also, the first time it did it the mph was higher than the rpm shift points, this time the rpm was higher than the mph shift points.

One thing that I just thought of, I've heard of guys (Flaco for sure) who have had the electronic throttles slam shut because of so much airflow, could this be the problem?