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Has anyone installed a new ECU wiring harness, the one available from Burton, and if so has there been a noticeable improvement in the running of the engine?
I got mine from Motorsport Developments. It definitely more crisp in its response. Plus it's nice and safe with no bare or cruddy wiring. The fans run faster too! 😁
You can never really go wrong replacing a 25 year old loom!
Also try searching for cw looms
I had an intermittent misfire on my 2wd Saff and replaced the engine, fuel pump and fans looms which fixed the problem straight away. A 27 year old original Ford wiring loom will be getting worn out and can cause all sorts of problems.