stop, stop, stop. No mothers need to be hurt in the making of this post.
the answer the the original question of improved MPG with a tune is true. must turner does lean the car out a bit to get more power out of it. YOu should know there is a lot more going on then just leaning the car out, this is usually the side effect of a good tune. It not going to be a drastic increase in MPG, but an increase non the less. to some people, every drop count.
I originally asked this question because I read it on a review from kkb. Here is the review.
My car is an 06 model. Complaints: Uses a little oil. A bit thirsty in the city (get Dinan softwear upgrade and fuel mileage will be 15 city & 22 hwy!) Many controls are odd or confusing. "I-drive" is slow when cold and SMG is very slow in winter climates when the car is cold. BMW Navigation is worthless. Power is just awsome (specially with Dinan softwear) Handling is spectacular. Slides & drifts are predictable and a blast! This car does 60's style burnouts! SMG is fantastic and smooth- even in town when it is both set correctly and driven smoothly - note: I prefer position "6" for the clutch setting which requires the "DSC" to be off. Build quality and materials are first rate. extremely comfortable on long trips whare it Never gets boaring. Great sterio. Exhaust note above 3,000 rpm. is spectacular! Huge trunk. This car does everything any other can do & does nearly anything better than everything. A trully Epic Car!!
This is why I asked the question. Not for a stupid remark. I know that tuners optimize the tune to the vehicle getting you the best fuel/air ratio,I just thought din an had some new magical tune. Thank you
That was a bad question but take it a little easy on the guy. I flew down to florida from the midwest to pick mine up. Had a buddy that lived down in orlando. I was even taking it a little easy as I was getting used to it, but looking at the milage I was getting I knew my wife wasn't going to be happy. What was really bad was my credit card company called my wife while I was down there and wanted to know if the card had been stolen as there were a lot of charges for gas.
Drive like a grandma, get a tune that leans out the car, add an RPI ram intake mod, and start dropping weight on the car. Titanium exhaust, headers, lighter wheels/tires, carbon fiber hood, and if you really want to get extreme, some racing seats.
I did Dinan stage 1 ECU and went from 11.7 average to 12.1, so yeah it helps a little. For me it was more about the top speed limiter removal, a little smoother shifting and re-calibration of the factory ''torque limiting'' programming. It was a $G well spent.
I have dinan software on my m6 with,pulleys and cf air box,it has been giving me sound 14 city and 21.5 hwy,thought it was an error,but it has been consistent,did the same mods on my wifes m5 and same results,apart from the smoother shifts and peppiness, which was a pleasant surprise although the intent of the mods was not for improving gas mileage but rather performance
It's a conspiracy! Damned oil companies have been greasing palms to keep that 100mpg carb out of the hands of consumers since the 1970s.
Just joshin'. ;- )
It is kinda hard to believe that the car gets such crappy gas milage even if you drive it like you're in a funeral procession. I've tried to see what I could coax out of it, you know, just for kicks, but then I realized no kicks were to be had by driving it like that.
I think the OP's goal was to reduce operating cost not just to see if he could get a marginal increase in MPG. To spend a couple of thousand to get a half a gallon increase is not cost effective. May I suggest that if he drives as stated without coming close to the performance that it is capable of, that saving 30 cents a gallon by using regular gasoline would be more cost effective.