I don't think the 2.4+ is possible. Mine constantly averages below 2 on the highway. When it's cold out Im lucky to hit 1.6. the range and charge speed are my only 2 gipes from the truck so far.
Btw the heat is crazy good. I'm amazed how fast it gets warm. Less than a min and its putting out...
I have a gen 2 and just installed these last weekend. They went on perfectly. I even got complemented by the guys at the SC when I was getting some warranty work done.
My tri hasn't picked up and I'm about 1000 miles into it. I'm a little dissapointed they are advertising more than 10% extra range. It's such a large difference it almost makes me wonder if instead of the max pack I received a large pack.