I have the HKS 2.0 mm and paid around $200 for it. It lowers your compression from 9.4 to 8.71.
Miata2nv · Registered Joined Apr 2, 2006 · 169 Posts #5 · Jul 27, 2006 View full thread I have the HKS 2.0 mm and paid around $200 for it. It lowers your compression from 9.4 to 8.71.