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BMW 3-Series (E90 E92) Forum
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jb4 fuel economy map
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05-28-2011, 07:54 PM | #1 |
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jb4 fuel economy map
So I am looking to purchase the jb4. I am VERY interested in the fuel economy map and im wondering what progress has been made on this. I cant seem to find anything related to it and it seems to be an in progress map.
What gains to fuel economy do you think Ill see? How different is the tune over stock? |
05-29-2011, 04:52 PM | #3 |
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I was holding out for this but decided to just go ahead and will update it if it does come out.
I'd be guessing maybe 2-3mpg but I think they way it is done can increase emissions unless Terry and team have found another way. On that note an emissions map would be nice for bringing outputs down to pass tests even with DP's, that would be a neat trick I think the fact is most are after more power/driveability and that'll rightly take priority so us eco-power freaks will have to wait a little longer. |
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11-14-2011, 12:48 PM | #5 |
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No need for it. Just step on the gas less and upshift earlier.
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02-21-2012, 08:00 PM | #10 |
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I've been running it for the past few days. So far MPG's are up from 19 to 23 with a 50/50 mix of highway and city driving. The car feels and sounds very different. Performance is about equivalent to a 328i.
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02-21-2012, 08:10 PM | #11 | |
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we'll call it the 329i |
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02-21-2012, 11:08 PM | #12 |
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02-21-2012, 11:58 PM | #15 | |
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I didn't care for it myself |
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02-22-2012, 01:31 PM | #18 |
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I agree. Just shift at lower rpms and don't drive aggressively
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02-22-2012, 04:52 PM | #19 |
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This.
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02-24-2012, 12:14 AM | #22 |
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