>>28564966
No, 158. 167 is the 2007+ NC rating, 2006 was rated at 170 as it used a different formula but no actual changes to the engine were made.
https://newsroom.mazda.com/ja/publicity/release/2000/200007/0718c.html
https://www.onallcylinders.com/2025/02/21/2006-15-mazda-mx-5-miata-nc-buyers-guide-year-by-year-changes/
>You’ll notice that NC2s are rated at 167 horsepower, a three horsepower reduction, but this is simply due to changing measurement standards: in reality, they’re just as powerful as the earlier NCs.