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Discussion Starter · #1 ·
I know its winter and expect a decrease in Mpg, but at the moment it is ridiculous 40 mile round trip today mainly A roads and only achieved 33mpg. There are no visible boost leaks, egr has been cleaned.

Could the n75 valve cause poor mpg if faulty? also there has been no reduction in power; still boosts fine.

Any suggestions greatly appreciated
 
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