Date Added: Wednesday 13 October, 2010
This catalytic convertor had little or no effect on my MX-5 at all.
It fitted with no problems, and the exhaust-system was completely airtight, but the CO levels was way too high to get through the MOT test (0,7%).
After mounting an original Mazda convertor the CO-levels dropped to 0,002% !
I also noted that the original Mazda convertor is almost twice the size of this product...?
Thankfully, MX5 Parts made me a full money refund - but even though I like MX-5 Parts and use them a lot, I cannot recommend this catalytic convertor.
Rating: [1 of 5 Stars!]