Gonna get sumfin after christmas but cnt decide what to get first. I really like dark tints but also quite fancied trying one of those tuning boxes but dont know if they make any difference performance wise. Dont wanna waste money 2 not notice a difference! I'll get both eventually but wonder waht 2 get first. K&n panel filter aswell in the future. 06 sri cdti 150. Anyone got a tuning hox? What they like? Does it cure turbo lag?