anyone in south west Louisiana or east Texas with timing meter

[1992F-250IDI]

would like to get my 93 idit timed i fell its not right do to im geting now where near the mpg i was getting in my 1992 non turbo bouth with 5 speed the 92 had a 4;10 i beleave the 93 has 3;55 gears and shes sucking it down thanks guys