Mine came off ebay for about a quarter of what the Aldi's one is priced at and I think it's exactly the same one. Bit of a rip-off at that price. Handy for reading the codes off to check them on the internet and clearing the codes but you will need a cable to connect the ECU to your Laptop or PC and a copy of TuneECU if you want to actually change anything or update the map.