Superchips are in my experience a load of shite!! They use very 'safe' parameters, makin the car really lethargic off boost. They don't map the ignition, just the fuel, meaning they run the same ignition advance off boost as on boost. Ahmed Bayjoo and turbosystems map an ignition curve into the chip, and to be fair when i got a stage 3 ahmed chip for mine it transformed the car! Allowed around 18 degrees of advance off boost makin the car really snappy to drive off boost.