Quote:
Originally Posted by Punkwrock
Quick question to anyone who has a JB Plus on the G20 330i. Did your gas mileage go to shit with this thing? Even with easy driving I'm getting about 100km less per tank
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When you're in boost, it'll reduce since there's more boost being made. Below 2500rpms it should be the same. With E85 added to 93, gas mileage was atrocious. JB+ alone (on 93aki fuel), I noticed a reduction of a couple of MPGs.