the silencer is a pain. remove passenger fender liner, youll see the hideous black thing that dwells in the fender/bumper. Its self explanatory once you take off the pass wheel and fender liner and remove the air box. im pretty sure the bolts are 10mm, but they break loose but wont come off because you have to get into the fender and get a grips on em, or just muscle em off like did, just rip that ish out, theres no reason for it to be in there if your about performance. then you can add a cold air if you choose to go coilovers instead of the air ride. Real good mod... dont run an open cone filter in the engine bay it robs you of power. drill the air box and remove the air silencer. remove the one intake resonator by the firewall that runs on top of the engine and cap it with a quick cap 3/4 i think it is. check out the Tech Articles for more info.