ok here is the deal. when in custom tunes there are wot shift points and there is the regular rev limiter. You need to make sure that the wot shift points and the rev limiter dont coincide with each other. By this i mean that say you set your rev limit at 4206 and the wot at 4207 it will not shift because the rev is set to low. the rev limit needs to be set at around 5600 or 5700 and you should be fine.
