Evolve Tune, Eco improvement?
Hi guys,
2009 335d, running a JBD for now.
Looking at Evole's tune - they're saying that there will be an improvement in cruising economy with their product.
Does anyone have any concrete evidence of this claim? I don't care for more power - no space to use it around here - the increased economy is very interesting to me....
Thanks
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2009 335d - JDB - MS-8
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