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#1
05-10-2015, 04:09 PM
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Has anyone observed actual fuel economy gains from chip tune?
I'm familiar with the various claims for and explanations of fuel economy gains when doing a chip tune. That was part of what motivated me to get my 98 E300 tuned (Stage 2 from Rocketchip) about a year ago. While the power improvements were real and measurable, I noticed absolutely no fuel economy gains.
I have no regrets about doing the tune...but a bit disappointed I'm still getting the same mpg. FYI it's 26.4 mpg over the course of 6500 miles, 72% highway driving.
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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 160k miles 06 E320 CDI "Rutherford", Black on Tan, 180k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete 19 Honda CR-V EX 79k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife 
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