Originally Posted by 2013zboii

i bought some test pipes.. i want to install them myself. i have heard and read all about demon bolts..

is it worth it for me to add a test pipe?
once i replace my cats with test pipe, will i have to install the demon bolts again or once they are off , they are officially off?


I also bought a stillen lightweight pulley.. worth it? should i let a shop install these??

Its finally time for me to mod my lady.. all the help is appreciated.