Originally Posted by F22B Prelude
I never knew that!! But I heard they changed the formula for figuring hp recently and thats why the new Civic is rated at 197hp?
No. I'm not sure the difference in between the K20Z (Si) or the K20A2 (RSX-S) that accounted for the drop though. The RSX is now rated at 201HP for 2006 vs. the 2005's figure of 210HP even though it "makes the same power."