Now I would like some honest opinions only from people who know what is the best mod to do to the T's exhaust,as I would like to achive approx 260 rwkw on 95 ron premium with auto trans, cai,uni chip and drilled injectors. My opinion for what it is worth was to do 3.5 inch from the cast dump into some sort of free flowing cat (anyone know of one) then into the original twin pipes,and yes I know how to use the search but want some opinions not dribble