IS220D Chip Tuning addition

[mfennell]

Hi Forum

I was wondering if anyone had any experience of Chip tuning adding, i have recently got an IS220d and even though i like the cars internals (only have it a week) the fuel economy does not seem to be that great ( i previously had a 320d for a while and it had better economy) , anyway i came across some of these websites advertising chip tuning adding so i was wondering if anyone had any experience of this ?

Do they do what they say on the tin or is it just all smoking mirrors , would appreciate any advice here ?

Mike.

[Dinho]

Not sure on this, maybe better off asking in the 2nd generation IS section.