rafichicago

There is one more thing that I forgot to mention in previous post. I asked dealership to raise the engine RPM while idleing cause it was a kind of low (500) that was done it is at 550 now after it has been done gas milag dropped from (according to the onboard computer) 19 to 16,5 do You guys think that slight change might have caused it? By the way I don't know how accurate onboard comp is... Does that happened to anybody here?

Thanks!