To be honest i did not notice or take any interest in fuel usage as the Maps where put on for extra power for towing a twin axle Caravan . Solo i drove it very spirited and a nice smile so that negated any fuel economy .
If you get the 163 you can have the Egr mapped out at Shark for a extra cost i think.
Mike
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2012 volvo xc90 Executive
Buccaneer Bermuda 2021
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