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Tuned Ecu...Gas mileage?

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Old May 26, 2009 | 01:32 AM
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bushburninc63's Avatar
bushburninc63
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2009 c63, 2010 E63
Tuned Ecu...Gas mileage?
What kind of tune do you guys have and what kind of gas mileage are you getting compared to stock?
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Old May 26, 2009 | 08:31 AM
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E350 Sport & Rs6
I have noticed that most of renntech's tunes add +2mpg but I can't seem to find this info for the C63.

I am curious to read other forum members reponses....

Which tune are you leaning towards?
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Old May 26, 2009 | 09:50 AM
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2009 c63, 2010 E63
I'm trying to refrain from "modding" my car, but the urge is too great. I'm just curious :o but this information will not sway my opinion on which one to get.
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Old May 26, 2009 | 10:13 AM
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18 mpg With Renntech's ECU
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Old May 26, 2009 | 11:34 AM
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Anything W/4Wheels
I get around 23mpg on the highway at 75 mph
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Old May 26, 2009 | 11:38 PM
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2009 C63 K1
No difference noticed.
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Old May 27, 2009 | 08:35 AM
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E350 Sport & Rs6
My SRT gets 10.3, is that good? Did I win?
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Old May 27, 2009 | 12:07 PM
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Originally Posted by Adam@Autoscope
My SRT gets 10.3, is that good? Did I win?
ohh man I have to take a pic of my 6mpg when I'm at the track
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Old May 27, 2009 | 02:08 PM
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Originally Posted by Adam@Autoscope
My SRT gets 10.3, is that good? Did I win?
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Old May 28, 2009 | 12:48 AM
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Most of our clients report a slight 2-5 mpg milage improvement, if they drive in a similar fashion than they did before we tuned the car. But if the right foot seems to be heavy.... the milage goes down!
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Old May 29, 2009 | 01:36 AM
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09' C63 AMG
I heard a decrease in MPG with the Kleemann ECU, does anyone know if this is true?
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Old May 29, 2009 | 02:59 AM
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Originally Posted by DaGS1800
I heard a decrease in MPG with the Kleemann ECU, does anyone know if this is true?
+1 would like to know as well.. Thinking about getting this done (headers later on)
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Old May 29, 2009 | 03:02 AM
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Originally Posted by drawde
+1 would like to know as well.. Thinking about getting this done (headers later on)
Might as well do it all together, otherwise you have to send your tune in again to delete the primary cat CEL....unless of course you don't mind
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