you really do not want the loudest one unless you like being pulled over by cops and dealing with fix-it tickets. A lot of 7thgenners like HKS hi-power exhaust
i read that the test pipe will make the CEL go on, but will the header itself make the CEL go on? thanks
also, isnt it recommended that you use a torque wrench when you bolt on the new header?
passenger side would be easier to access to...you have to poke a hole in the firewall hole and you can hide the wire behind the panels alongside the passenger side all the way to the trunk