Well without a scan we cant advise, we can only advise of some of the pitfulls of doing these mods, they may just plug straighjt in & be ok, but thats speculative, thats why I advised maybe its prudent to buy vcds or get someone to scan it for you, going to a garage will cost you anyway, so why not invest those readies in the system yourself, so later scans would be no charge & convenience of doing when you like.