Even mild power upgrades such as new air-filters, exhaust systems and more boost pressure can cause problems with the factory engine management. For such applications where modest power increases are being sought, AVO Turboworld's Sub-Com plug and play interceptor is perfect. This allows fine-tuning of the fuel and ignition timing to suit mild increases in engine efficiency and turbocharger boost pressure. The Sub-Com computer is easy to use and is PC based programmable. Wire in yourself. Comes with wiring instructions.