Anyone have one? I had one on my Astra and it ran well but it was fitted to the car before I bought it. I have just had a new Ecu replaced and I have now lost the Superchip
. I have noticed a difference, and I will be monitoring my car for the next few weeks. I may have to go and get another one fitted as I was told they are better on fuel when chipped. My chip was from Courtenay Sport. So does anyone else think they are good to have? Thanks