The K20A3 just like the CRV/accord/factor k24a does not have a regular DOHC VTEC valvetrain as we understand it within the B-sequence engines - the K20A3 should actually be named a "DOHC i-VTEC-E" engine, as it employs a VTEC-E cam setup. Spark plugs with a closer gap also are crucial, https://jdmsubaruej20turboenginei00872.like-blogs.com/26688753/the-single-best-strategy-to-use-for-rb26-engine-for-sale