I see.. as you can probably tell im fairly new to this whole thing.. thanks for your help and patience. What would you recomend doing in my situation ( Want more power but dont want to wreck the warranty). At first i wanted to buy a prelude but these days the newer ones are more expensive than when they were still making them and i dont want an older one.. and yes i do live in canada, B.C. so the civic si here is the same as the american civic EX.