A guy told me that the ONLY muffler that will add power is magnaflow. i think its bull but i wanted to hear from yall.
definitely false - having no muffler on at all will probably add even MORE power than magnaflow. the gains are so minimal from welding in a muffler, unless the previous one was seriously restrictive.
thats wat i thought but i thave another question. i had dynomax race bullets, i took them off to put flomaster 40's on. did i lose power, if so i dont think i would tell the diff