Does remapping actually save you fuel?

nsmith1180:
I’m not going to go out of my way to kill off free willy franglais but I don’t want the next Diesel gate scandal to be called SmiffyGate!

I was thinking that if the trial looks good after march I would month on month off for a while to get as close a comparison as possible.

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To my non-expert ears that sounds like a good way to trial something.
I hadnt got you down as a deliberate whale murderer, and Im glad Im right there. Im all for a bit of greenery too, so long as it doesn`t cost tooo much.