Quote:
Originally Posted by bc35339
My 02 duramax is stock with 128,000 miles on it and I only get 13.5 to 14.5 mpg. How much do I need to spend and what do I need to buy to get 24 mpg?
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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.