I would not recommend Central Diesel Fuel Injection Specialist Inc, also known as "Taylor Diesel, of Columbia, MO". . not sure they know what they're doing. Yes, they know more than me, but I took them a '05 Duramax , it was leaking coolant out overflow tank; the truck ran great other than that. Got 20 mpg, ran like a scalded ape and had 60psi of oil pressure. After they diagnosed it with a blown head gasket for $3500, a bent valve and broken push rod, 8 new glow plugs, 2 new exhaust manifolds, machine work, checking and cleaning fuel injectors, gouged me on every part, and fluid added to the tune of $3000.00 and 3 weeks for a final total of $6500.00. you would think it would be like a new truck. I mean apparently it was only running on 7cyl before so running on 8cyl now should be like Wow!! Wrong!!!! No power, fuel mpg fell down 6mpg, oil pressure dropped 20psi. Chris the Asst. manager even admits it is missing 50hp somewhere, but he don't know where. Their solution; run this $40 cleaner (Stanadyne) through it to see if it will fix, what ever the problem is, because he says, "He has no idea what is wrong." It did not. But to their credit, my coolant no longer leaks out. But, now I have 65% of the truck I had before I let them work on it and am $6500 in the hole. I don't recommend Taylor Diesel.