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#1
11-23-2009, 10:22 PM
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Transmission Software Update Performed = Lousy Mileage
I had my transmission software updated in late-September. While I can say the driveability has been greatly improved, my gas mileage has been abyssmal to say the least. I went from getting 15 to 18 mpg down to 10 or so. I only get about 200 to 210 miles per tank. Granted I'm heavy in the foot and do mostly city driving, but that was the case prior to the reprogram.
Anyone else run into this?
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08 BMW X5 4.8i - GONE after 6.5 yrs Space Gray / Light Beige Premium, Sport, 20's, Technology SAT, Rear Climate,Heated 
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#2
11-25-2009, 12:15 AM
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i think your right.. i noticed my mileage down also since my updated programming..wtf.....now what?? anyone else!!!!!
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1st 2008 X5 3.0 in alpine white/saddle brown in USA (had)2001 x5 3.0i dinan engine software,dinan trans software, dinan throttle body
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#3
11-25-2009, 01:03 AM
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what mpg are you getting on a 3.0? I thought the fix was for the 4.8 jerkiness. Did it also improve your ride quality elvism?
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'08 X5 3.0si - Alpine White / Saddle Brown interior Specs: Sport Pkg, Premium Pkg, Tech Pkg, Comfort Access, Aero Kit, Style 433 staggered 20s on Conti DWS Mods: Carbon 35 tint, LED angel eyes, GP Thunder 7500k fogs, H&R 20mm/25mm spacers, clear reflectors, gunsmoke-tinted taillights Coded: Digital speedo, windows/sunroof/tailgate close via keyfob X5 pics at Flickr
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#4
11-25-2009, 01:20 PM
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actually i just called the dealer to see what was done
to my X.. they told me that i didnt get the DMT done...that i needed it...why then did they put it on my invoice.. idiots!!.. they tell me its a fuel emission recall and something to do with check engine light... i noticed my mileage was around 14.7 city but normally around 16-17...highway 20-22...just seems less lately. dealer also told me the the fuel addictives are different this time of year..take my X in for 2 year check up in 2 weeks...
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1st 2008 X5 3.0 in alpine white/saddle brown in USA (had)2001 x5 3.0i dinan engine software,dinan trans software, dinan throttle body
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#5
11-25-2009, 09:35 PM
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I have a 3.0 single turbo 2007 diesel.. when i got the battery replaced about 2 months back they said they reprogrammed the car... My fuel consumption is now worse than ever and the car seems to "hold" gear for a lot longer like I was in sport mode but I am not...
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#6
11-26-2009, 03:59 AM
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Quote:
I noticed that when she does this, redlining it a few times through the first 3 gears solves the problem
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OK, I'm here, tell me about your other 2 wishes 
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#7
11-29-2009, 03:19 PM
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Quote:
 that's insane, even more if its a 3.0. Sorry to hear that.
__________________
..................  The Marines already have a few good men ...............The Navy CORPSMAN 
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