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      02-01-2015, 01:38 PM   #60
makkan00
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Drives: F83 and F36
Join Date: Dec 2011
Location: Essex

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Quote:
Originally Posted by IanS100 View Post
I had DTUK box on a previous car and it screwed up all the mpg readings on the BC, do they still do this?
Quote:
Originally Posted by holmefield View Post
Not sure I just use my fuelly app. my OBC states 38.7 mpg average....
AFAIK, they are good enough to fool the ECU that nothing has changed.
But if you notice brim to brim, then you will see real difference.
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F36 Xdrive for her - HUD, park assist, heated steering wheel, rear camera, Apple car play
F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play
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