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Re: Horrendous fuel economy... 08 Aero XWD Posted by magalar [Email] (#1325) [Profile/Gallery] (more from magalar) on Tue, 22 Oct 2013 13:32:58 In Reply to: Re: Horrendous fuel economy... 08 Aero XWD, Slug [Profile/Gallery] , Tue, 22 Oct 2013 10:17:40 Members do not see ads below this line. - Help Keep This Site Online - Signup |
It may be true. Years ago, my stock urQuattro never went over 24 mpg on long trips at 75 mph.
Then, a friend bought an identical 1983 urQuattro, but "tuned" slightly with a Lehman-chipped ECU and a stiffer wastegate spring. On the way back from Cincinnati, this car did a solid 27 mpg on the 825 miles back home. More power and better mileage : we called it the "miracle" ECU.
BTW, this ECU controls only the iginition map, as the fueling is done via a Bosch mechanical fuel injection (CIS or K-Jetronic). Stranger still...
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