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new to me 08 350....tune or dont tune????
just purchased an 08 350 crew cab lariat long bed. i live in west ky. found the truck on ebay....flew in and drove home. truck didnt look to have any aftermarket parts.
here is the question.
i avg'ed 19ish mpg at around 65 to 70 mph on an 800 mile trip home. now i drive pretty conservatively, but is it possible to achieve this mileage without a previous tune? it does still have the dpf in place and has the factory catback. i was pleasantly surprised with the mileage and dont wanna screw up a good thing. but the stock tips dont look too good as this truck didnt have the chrome pkg. another thing i was unsure of is if 1 regen in 900 miles is normal? it probably isnt tuned as the one time i saw the "cleaning" come up i switched to avg and it did quickly drop by around .3 with no apparent reason.
so i am looking at purchasing a dpf back exhaust for around 350 bux, but if i could see even better mileage with a tune and dpf delete i would be for it. this truck is not a dd and will be used mainly to pull a toy hauler. but better mpg's would is always welcomed.
Suggestions????? thanks in advance.