Don't forget, the JDM engine is also more illegal. And I think(someone correct me if I'm wrong) but the 10hp gain is due to slightly higher compression. I thought it was cam profiles. I get confused though by the different JDM variations of the B18C though, like the SiR-G and SI-VTEC. Also, doesn't a USDM ECU make a JDM motor smoggable?
