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'ECO' chip tuning your engine
Has anyone here done 'eco chip' tuning on their car instead of the usual 'performance chip' tuning. I have a 2l and a 1.4l in my cars both non turbo. Here is a local speed shop here that offers chip tuning for the equivalent of $250. They advertise both a performance chip tune and a fuel efficiency tune but will it be worth it what results can I expect?
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