Quote Originally Posted by sloutch View Post
I don't think it works that way. The tune should be working as soon as the car gets onto the road. It's not about wearing in or something in this case.
just replying what i was told, the guy said that ecu uses some sort of memory system.

Quote Originally Posted by Rthirsty6 View Post
Nope, it has been about 4 weeks now and the fuel consumption is actually getting worse!
I am very hesitant to do anything at this stage until I have a clear understanding what the problem is as I don't want to make it worse than it already is....
oh, i didn't know that, probably should check it out, maybe go back whereever you got it tuned and ask them, afterall there is a warranty of some sort.

BTW which tune was it?