InnovativeAV
Registered User
I have a 2003 F350 7.3 power stroke. I just had a local diesel shop do some work on it they actually put a new driver side manifold on put new uppipes on flushed the coolant from the system and put the new serpentine belt idler pulley and tensioner pulley. My trip is going to be about 1400 miles one way and then the next weekend we will be coming back 1400 miles. I have the TS6 tuner or six position tune in with the chip, i’m not exactly sure the model but I have the dial on the dash. I asked them what the best setting would be for fuel economy once you’re on the highway performance doesn’t really make a big deal going that far. He told me tuned with the highest horsepower on position *** would give the best fuel economy. Maybe he is right but in my world it just doesn’t make sense to me having more horsepower and he need more fuel to make more power to me going down to the Stocks setting would make more sense. So my question is is he right should I just run it on position *** for the best fuel economy?
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