I have a 94 Accord EX and I'm looking at a new exhaust system. I have looked at a few and really like the Greddy Evo. So if I do put on a new performance cat-back and I already have a cold air intake installed, is there any other maintenaince or tuning up I should do to make them all run smoothly? I have heard that a fuel pressure regulator may be needed. What do you guys think of the Greddy Evo and what else do I need to do to the car? Thanks for your help.