Hi im new to posting on this site but iv bin reading alot on here and I couldn't find quite a real explanation on this, I was looking at the obx that does come with a downpipe yes I knw some people say its worthless and what not but my question is if I do get a megan header(test pipe) can I still use my stock downpipe?
thanx in advance
sorry forgot to add I have an 08 civic EX coupe manual