Mazda MX-5 in today for a custom stage one remap Going from (stock) 126BHP and 167NM Going to (tuned) 136BHP and 179NM Yes with it been Naturally aspirated it wouldnt gain huge power but! it will over all help and improve the driveability , removing the flat spots throughout the rev range. producing a more linear power curve. * Performance gains are commensurate with age, mileage, and condition of the vehicle, along with environmental conditions and grade of fuel. we run a full health check done