Has anyone remapped a defender ecu themselves? I want to be able to map the ECU myself so that i can make tweaks and alterations when ever i so wish....... :)

I ran the cable up the A post and inside the roof linning drilled a hole and used a ruber gromet (to stop the cable chaffing) and resealed with a silicon sealer. it's the neatest method i've found. But REMEMBER to ensure the whole is sealed you don't want any water coming in!!! Sorry there's...