LMM Performance Discussion of Chevy and GMC Trucks with LMM Duramax Turbo Diesel Engines Related To Performance And Longevity

deletes now loss of mpg

Old 08-31-2014, 03:49 PM
99stackedpowerstroke's Avatar
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Question deletes now loss of mpg

So we just did a egr block off plate and 4" dp back on an 08 LMM as well as a S&B intake and put farmtuned tunes on it and pulled an inclosed closed trailer 600 miles and I lost 4mpgs after doing so, as anybody else ran into this problem??
Old 06-26-2015, 12:52 PM
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How does the truck drive is it smokey? Have you called your tuner to discuss this issue? As far as MPG were you hand calculating the mileage prior to deletes? Are the numbers you see now hand calculated? Is your speedometer actuate to the vehicle speed?
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