Agree with you on this, but I only have a P38a DT manual so no frills here, no climate control, no air flappers,no auto box, no sat nav, so really the only thing to go wrong is the EAS which I already made the cable for. The blackbox is good but a bit pricey for just looking at engine and EAS, hence why I wanted to try the open shareware route. If I had a 4.0 or 6 petrol with all toys, then I would go down this expensive route.