That Mazda diesel is a fine engine, but at 60hp and 89 ft/lbs torque it is going to be way under powered for a MM. Not sure why your mileage is so poor. When I had my 4G54 I would consistantly get 19 to 20mpg pushing 33s. Weber carb it.

Last edited by plh; 02/10/14 05:13 AM.

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