A good remap should make the engine more efficient.
A more efficient engine, in a vehicle driven sensibly, should use less fuel.
QED.:):):)
 
I do have an older Dynachip remap and it is a little thirstier than before but also quicker than before.
But my economy is worse than it was (post remap), but there are other things to check such as MAF MAP and the like.

I have just replaced my MAF meter. So that's ok. Not sure what the MAP is so will look into that thanks
 

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