I’ve had the Magnuson for about 10k miles now. I drive 50/50 city highway. No real change in mpg. Well unless you can’t keep your foot out of it. I don’t notice a huge difference in town but maybe I’m used to it by now. Where is shines is on the highway. The truck never leaves 5th gear, no more gear hunting for grades. Passing power is always right there. It just makes it more enjoyable. If you are expectant a race machine then this isn’t the one you want. It’s still a 5,000 lb brick. If you are going to install it yourself, which I recommend, it’s very easy to do. Just take your time at it. Something else my truck rarely ever sees above 3k rpm anymore, unless I’m having fun with it.


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