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F350 problems. Im very new, have mercy.
Bought my first Diesel a couple months ago, a 2000 F350 CC LB DRW 4X4 with 250,000 on it. It seemed to be in descent sape when i bought it but as i dont know a lot a bout the powerstrokes i didnt really know what to look for. My dad owns his own repair shop but doesnt get a lot of powerstroke work so hes not an expert. for mods i've replaced the factory air box with a cone style filter element, put on a 4" turbo-back straight pipe and added a superchips programmer. im only getting 12MPG empty which seems kind of low to me. It pours white smoke on a cold start for 1-2 minutes. it seems to have descent power but the fuel milage is a killer. i expected 14-16 at least. i put our scan tool on it to read ebp and manifold pressure. key on engine off MAP reads 12.9 EBP reads 15, and baro reads 14.5. same after new MAP sensor and cleaned EBP tube. looking for some ideas as to what, f anything, is wrong with my truck.
Sorry about the novel, any help is appreciated.