taking the snorkle off made it feel more smooth throught the mid range, some might say otherwise, but its how i felt.... the restrictor wires stop the throtle opening fully in 2nd and 3rd gear, that made a nice difference. the Akro map dissables that too. i have a GPR system on it now and found it to be not up to spec, not happy with it, so going for the Akro as thats all thats here in the UK