22/06/2026
We start the week with yet another MX-5 owner dissatisfied with a remap carried out by a third party. Third party quotes 226BHP, yet our dyno reads 210BHP! Installation of our base map brings the power up to 215BHP and after two hours of optimisation for the owners hardware - 4-2-1 manifold and BBR Cams, a further 4BHP and optimum torque curve is achieved.
We are increasingly seeing power figures and gains quoted elsewhere with no dyno graph (just quoted figures), or highly questionable proof. NC’s on standard cams achieving over 190BHP yet making low 170’s on our own dyno, gains quoted of over 8BHP on previously BBR mapped cars only to find the actual power is less.
MX-5 owners are being taken advantage of and this is turning into a recently reoccurring theme. Whilst it’s great to see plenty of available options, ask yourself the following:
• Are the power figures being quoted actually achievable? NC’s and even ND’s have been tuned extensively globally now for over a decade, why all of a sudden are further gains magically being found?
• What experience does the company actually have of remapping? Years on your particular marque, or are they just using you and your car as a guinea pig?
• Are unrealistic dyno graphs being used showing power gains everywhere in the rev range and just a different correction factors being used?
