https://www.unicornmotordevelopments.com/shop/index.php?route=product/product&product_id=64 Unicorn Motor Developments Self tune System is now available for all Audi A4 B7 3.0tdi models, This allows you to install Unicorn software yourself using a handheld tablet. The software is semi-custom. You tell us the spec of the car, the intended use and we will write a file to suit based on the experience of tuning 1000’s of similar cars in house. Up to 5 maps - including the standard map - can be stored and freely switched between as many times as you wish. Additional maps are changed at £49,99, if for example you would like both a high and low torque map. We only offer Self Tune Systems for cars that we have vast experience gained from tuning in house in our Dyno Cell. Stage 1 power is typically around 280bhp. How it works: Plug the handheld touch screen device into your OBD port. Wait for the device to power up, and then tap diagnostics and the device will read any DTC or trouble codes. Then click on tuning and follow on screen instructions to read your ECU and save the contents to the device. You can now unplug from the OBD port. You will be given a link to Unicorn Desktop software which you need to install on your Windows PC/laptop. The PC/laptop does not have to be connected to your car. Once installed, run the Unicorn Desktop software and plug the device in to a USB port. Follow the onscreen instructions to download your original map from your tablet. Email us this file along with your full spec list along with your requirements and we will email you a tuned file in return. Upload the tuned file to your handheld using the Unicorn Desktop Software. Plug the device back into your car, tap tuning and follow the instructions to flash the new tuned software onto your ECU and you're done! You are free to go back to stock at any point.