Compression Ignition Addict
Join Date: Sep 2012
Location: The 'Sip
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You're probably not going to want to run a big tune while pulling a camper.
There is a larger capacity trans pan you can add on and if you want to knock those EGTs down a little further, get a downpipe. Other than that, there are a few more trans upgrades, but they start to get pretty expensive quickly.
65% power is easy. 35% MPG is not. If your truck is getting 15 MPG right now (you'd be in the minority... I think most of us get between 13-15 HWY hand-calculated), you'd have to get 20.25 MPG. That's not a common gain. But, you're talking about picking up that when you're hauling, it may be possible especially if you're on the lower side of the haul MPGs (about 9 MPG).
It may be your only purpose in life is to serve as a warning for others.