I doubt the US dealer made a mistake by ordering for the wrong vehicle. I too thought the stock mapping could handle the increased air flow and didn't need a flash until Stage 2. I'm told the vehicles are tuned a bit lean for US DOT emissions standards....is it possible a remap is needed for US vehicles and not others?
I do plan to enjoy longer journeys. And because payload weight/distribution will vary quite a bit, I'm also looking at the Supplex shocks.
