Had my m43 engined 316i chip tuned by Enda at EndTuning last week and would totally recommend it. Pulling away at junctions, the response is improved and the car generally accelerates a bit better. It will never be a fast car, but the difference is noticeable and fuel economy appears un-affected. EndTuning did my car at short notice and were very professional and knowledgeable. My thanks goes to Enda, for an excellent product and service.