I specialise in these MX5 ecu/immobiliser/transponder systems fitted to UK specification and European MX5 cars 1989 - 2005.
The ecu photographed is for a 2001 - 2005 MK2.5 1.8 car, marked BP6MC/BP6MD, UK & Europe BP6J18881D, 079700-1224. 
This listing is for all parts required to resolve an issue with your car's ECU, immobiliser or transponder together with support and advice with a guarantee that the problem will be resolved without an expensive garage bill.

The UK spec MK2.5 MX5 1.6 & 1.8 is fitted with a TRW 36AS immobiliser unit. Unfortunately these immobilisers are failing in large numbers. This usually begins with a random non start but gets progressively worse. It has become obvious that these parts are failing due to age and nothing that can really be done. As the only reasonable solution is to buy another set of parts with the potentially failing TRW 36AS immobiliser, I will take some responsibility for parts purchased from me. I have a test harness to check these parts and be reasonably assured that there  is no imminent failure. I will also guarantee my parts against immobiliser failure for three months.      

If you have an issue with an MX5 fitted with another ECU please contact me through ebay.
I have nearly 70 sets with factory immobiliser in stock for the MK1 - MK2.5 cars.
B6HB, BPU2A, BPU2A, B6ML, BP5C, BP5Z, B6MV, B6NB, BP7PA and BP7PC.      

I enjoy dealing with people abroad but ebay stipulate that delivery outside of the UK goes through the Global Shipping Program. The Global Shipping Program have recently lost the plot and are seriously restricting countries they will deliver my MX5/Eunos Car parts to. Quite a few parts can only be supplied to the UK as GSP opting out! If you are in a country outside of the UK and there appears to be a block on delivery to you, please get in touch and I will do my utmost to offer a solution; the cost may well be less than the GSP service anyway.