How to Maximize mpg
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Joined: Aug 2010
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I think the problem is there have been a million threads about mpg's and how to pinch an extra mile or two out of these cars. While there are a couple ways to do that a simple google or forum search would have turned up all this info in any number of threads posted previously.Not trying to be a di*&, but search.
What the post about the carbon filter didnt tell you is that you run the risk of screwing up your MAF sensor and having to spend all the money you thought you were saving in gas after your 1-2 mpg increase... Many people have had MAF issues and error msgs as a result of its removal.
I guess I am just a bit lost on how saving 2 or 3 mpg is really saving anything... tuffluck, your 5 mpg sounds good but at what risk? I haven't read the thread yet but will look... I am afraid I would have to listen to that damn chime that you hear when something goes haywire - and I have had my share of that! See my thread about my flooded 545! The point I was trying to make earlier is this... if you were/are truly worried about pinching a few pennies out of a couple additional mpg's here or there then maybe the e60 isn't the car for you. There are many other choices that would help in that category. Additionally, if I remember correctly, the OP is driving the beastly 8... mpg's are out the window!
What the post about the carbon filter didnt tell you is that you run the risk of screwing up your MAF sensor and having to spend all the money you thought you were saving in gas after your 1-2 mpg increase... Many people have had MAF issues and error msgs as a result of its removal.
I guess I am just a bit lost on how saving 2 or 3 mpg is really saving anything... tuffluck, your 5 mpg sounds good but at what risk? I haven't read the thread yet but will look... I am afraid I would have to listen to that damn chime that you hear when something goes haywire - and I have had my share of that! See my thread about my flooded 545! The point I was trying to make earlier is this... if you were/are truly worried about pinching a few pennies out of a couple additional mpg's here or there then maybe the e60 isn't the car for you. There are many other choices that would help in that category. Additionally, if I remember correctly, the OP is driving the beastly 8... mpg's are out the window!
secondly, 5mpg increase sounds like my engine prefers the lower octane, otherwise how would it be running BETTER?
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Joined: Nov 2008
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From: Buffalo NY
My Ride: 2004 545i 6 speed, Silver Gray A08, Gray leather
Mods: Hard-Wired Passport 9500ix LIVE , K&N Air + RPi Scoop, Mtech V2.1 AE, ACS pedals+Ebrake, flip up front plate, OEM 172's, Custom M Kit, M3 shift knob, Eisemann Race Exhaust
2005 X5 3.0 (the nightmare)
1998 528i SOLD @ 173K
Castle makes a product called Dragon Power. Its really good stuff cleans out your injectors etc. I got about 2mpg gains after running a tank with it. I used it in my old e39 all the time and it made a big difference. I get it for about 6 bucks a bottle its something to try!
http://www.castlepackspower.com/Cata...agonpower.html
http://www.castlepackspower.com/Cata...agonpower.html
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Joined: Mar 2010
Posts: 196
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From: Atlanta, GA
My Ride: 545i/6
I get a combined 22-23mpg. Not bad for a 4dr v8 IMO. And yes, driving habits make a significant difference with these cars. A lead foot will kill any mpg, especially in a v8. I notice a 3-4mpg difference just by adjusting my driving style.
I also pulled my charcoal filter about 25k miles ago and have had zero issues. Just better mpg a better throttle response.
I also pulled my charcoal filter about 25k miles ago and have had zero issues. Just better mpg a better throttle response.
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Joined: Aug 2010
Posts: 616
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I get a combined 22-23mpg. Not bad for a 4dr v8 IMO. And yes, driving habits make a significant difference with these cars. A lead foot will kill any mpg, especially in a v8. I notice a 3-4mpg difference just by adjusting my driving style.
I also pulled my charcoal filter about 25k miles ago and have had zero issues. Just better mpg a better throttle response.
I also pulled my charcoal filter about 25k miles ago and have had zero issues. Just better mpg a better throttle response.
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Joined: Jul 2009
Posts: 214
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From: Calgary, AB
My Ride: 2008 550i M-sport, retrofitted heated M-sport steering wheel with paddles, Sport-auto transmission
Then, once you're done you can file that information away in your mind and get back to driving the car like it was meant to be driver, all the while comforted with the knowledge that you could save gas if you wanted to...
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Joined: Mar 2010
Posts: 196
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From: Atlanta, GA
My Ride: 545i/6
I did early on. Things havnt changed that dramatically at all. Probably because my commute is 50/50 highway/city. I have always averaged 22-24mpg since owning the car. I agree it wouldnt be 22 in the city. But 18-19 is achievable.
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Joined: Oct 2006
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From: Colorado USA
My Ride: 2004 545i, 6-speed Manual, Silver Grey Metallic, Grey Dakota Leather, Cold Weather Pkg, Premium Sound Pkg, Sport Pkg, Lumbar Support
I did what you said, (resetting the trip computer), and on my normal 20 mile loop, I got 20.2 MPG, so in fact the historical avg was somewhat higher at 23.2. Also, this explains why the historical average has dropped from 23.5 to 23.2 over the time I have driven the car. The previous owner was getting better MPG than I have gotten.
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I did what you said, (resetting the trip computer), and on my normal 20 mile loop, I got 20.2 MPG, so in fact the historical avg was somewhat higher at 23.2. Also, this explains why the historical average has dropped from 23.5 to 23.2 over the time I have driven the car. The previous owner was getting better MPG than I have gotten.
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