Quote:
Originally Posted by COcyclist
I also have found the price of a tuning box pretty steep so I don't have first hand experience. There are a number of threads at tdiclub.com on chips and tuning boxes. Most people there feel they improve diesel fuel mileage by a couple of mpg on the highway. Since they also make more hp you can lose the mileage gain by hotrodding around with your new power.
It would take a long time to break even from a fuel savings standpoint but it might be fun to have.
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I wouldn't hodrod the car after the addition so yeah, like the other guy said, it'd be interesting to hear about the actual MPG changes. A couple MPG is most definitely not worth the investment, and overall, I think it's far too expensive to worth trying out, as it's most likley not to improve MPG.