Thanks for all the feedback, I was not looking to hot rod my 8.1, just improve the hill climbing a little, we travel frequently with an another couple who pull a fiver with a duramax and they uusually have me lead but they invariably climb my but on all the hills. Some reprogramming on the allison and little better engine breathing is my main goal and was considering Banks stinger package with the Ottomind tuner. Still in the analysis state. It is expensive especially to ship up to Canada. I do pull a 4000 lb toad and that does affect the hill climbing ability.
Regards Art
