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Old 04-07-2012, 09:19 AM   #4 (permalink)
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There is a guy on here that made some changes to his Mustang convertible and posted near 40 mpg ( I think, don't quote me ). And that is with an automatic transmission.

The thing you need to do now is a compression check and a leakdown test. You are getting the kind of mpg a 5.0 would get without the fun, and a stock 5.0 with the right gearing and driven easy can get mid 20s or better ( manual transmission ).

If the engine passes the tests, do a full tune up and don't forget the timing belt and O2 sensor. Put a fresh catalytic convertor on too, if it's clogged up, engine can't breathe.

After that, get an electronic gauge that is compatible with your electronics ( I believe the Ultragauge is compatible, or an MPGuino ) and learn to drive by that. Consider it a game on your commute and make it fun.
Volvo WIA42 VED-12 / 335 hp / 1300 ft/lbs / 9 mpg

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