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Old 10-04-2019, 07:41 PM   #36 (permalink)
EcoModding Lurker
Join Date: May 2016
Location: Virginia
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If your are not stuck to aero mods you could use a tune , larger injectors, hammer mod to increase power and fuel economy (of course not at the same time ...increased power means increased fuel usage BUT if you drive like normal those mods will help fuel economy (other mods include gutting the muffler and cat) but if you get smog checked that may not fly.

A flat under car pan may help , side skirts that deflect air round the rear wheels may help too (large road tractor trailers find it helps)....
2003 Jetta TDI Wagon, 5 sp, 210K miles, Stock.....for now!
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