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Level of technical know-how needed?
Absolutely
It's very easy to set up -- just a few wires. I think the directions are on a youtube video on the burger turning website after selecting Ram for your vehicle. Take a look.
But what about MPG gains… Are there any? Are they real?
That would be cool, but overall, if I want Hellcat type performance, I’d buy a sports car.
. I could get a TRX or Raptor If I want all that
Well it was my suggestion that they should offer 6.4. Wether or not they are doesn't change my opinion. Bringing back the same 5.7L is nothing to get excited about and kind of a let down. At this point, I wouldn't even consider a new truck with the 5.7L.
I doubt there are any real world MPG gains. MPG's are so important to car manufacturers, I doubt they leave any mpg's at the table that can be so easily obtained with a simple tune.
They might if it was at the expense of power
I have been running the JB4 Tuner since March in my Tungsten and like it very much. You can really feel the difference. It had zero impact on my MPG. I might be wrong, but from what I can tell it tricks the engine into increasing the boost from the turbo's so during normal driving you are not in a boosted condition - hence no change in MPG's. It only seems to change things once you are running it wide open.
