I have an '04 also. I'd like to see how your mods work out. I'm just curious though...aren't you guys who mod the newish cars concerned with voiding the factory warranty? (I'm not trying to bash anyone) Any one of those things you mentioned will make it void. My brother is a Honda tech. and he has told me stories of denied warranty claims from guys who bolted on aftermarket stuff. Example: He told me about one guy with an S2000 who came in to the shop with a blown engine. The shop foreman took one look under the hood, and spotted an aftermarket header. He closed the hood and sent the owner packing. NO coverage. I guess if someone has the cash to fix it themselves when things break, that's their business...What kind of experiences have you and other people in this forum had with Honda shops?