Quote:
Originally Posted by hotrod
Thats really low, LB7s are one of the most fuel efficient light duty diesels on the market. Have you had your injectors replaced? Notice any excessive black smoke on exceleration? LB7s are known for their injector problems that rob fuel economy and eventually blow holes in pistons. :mad: Mine is a reg cab long bed with 4" exhaust, no muffler. Its tuned with EFI Live on a dsp5 switch. I have a 'stock', 'econ', 'tow', 'street', and 'race' tunes on mine. The switch was $40 from http://duramaxtuner.com/dsp5 and a friend of mine writes EFI live tunes so he hooked me up big time.  I could see what he would charge if interested. |
mine is a 02 crewcab 4x4 auto. no lift with bfg tires, not sure what size but I will check. They look close to stock. When I bought the truck I took it to a shop and they said the injectors were fine. that was 10,000 miles ago. I was told if they were bad it would smoke at a idle. Mine dont smoke when idling and only slight smoke at full throttle. I have heard that 13.5 was normal for my truck and some people say they get 20+. Id be happy with 19-20 mpg.