if your using more than is required then its poor running, nothing but serious in here, i personally dont like to piss money away, maybe you do ? good on you if you have enough to do so.

and as for the cossie that is good on fuel when used in anger, heres a small example for you, my last rally car, when on stage mapped by a well known mapper would return me approx 5mpg, after a change in mapper, and a totally differant map, same spec, i would then return nearer 10mpg, i call that a great improvement, and can only therefore sumise that my last map was incorrect hence poor running, you may not feel the effects of poor running, only on your wallet by the sounds of it