CR TECH - MULTI-MAP DIGITAL MICROPROCESSOR TUNING MODULE. Once fitted, our tuning modules aim to give you more usable power and much more available torque. As a by-product of this, your turbo lag will be greatly reduced making the car much nicer to drive.
it does exactly as claimed and more but i found the fitting instructions could be simplified especailly the part about removing the engine plug and plugging in the chip