Im not up on the abbreviations but yes it is a disco 2, td5 manual. Do you really think it will upset the computer? I was thinking 1.6 because I will probably fit bigger tyres at some point.

Has anyone put a 1.667:1 or a 1.4:1 transfer box in a discovery? If so what does it drive like? I do a fair bit of towing and I find pulling away difficult with any sort of weight in the trailer. As it will need a new gearbox soon I'm thinking I could be wise to change the t box. Motorways and...