Everyone has there own opinions on this, I run a Zone 1 chip and am very happy, others run Viper2's etc......you'll get pro's and cons for both.
I doubt wether the US chips work aswell over here as we have a higher ron fuel and there engines were normally detuned compared to ours.
For the money the Zone chip is very good value and you'll be supporting the ZOne too as all profits go back into the zone
