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      10-31-2011, 03:48 PM   #104
kaishang
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Drives: 2010 E90 330d
Join Date: Jul 2010
Location: London

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I have a real problem believing the increases in reported increases in fuel economy following a remap. How does it happen? If it was that easy, why don't car manufacturers do it themselves?

Just because your trip computer tells you that your fuel economy has improved, does not mean it has improved. There is no reason why a remap will change the way fuel consumption is measured by the trip computer. If you inject more fuel into the cylinder - which is how remaps usually work - why do you think the computer will know that more fuel is being injected?

I do believe remaps can give you more power. Delivering more power is easy, you just need to burn more fuel.
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