dual exhaust for 2002 v6 camry

[ctbuhay]

does anyone have any experience with anyone who has done a true dual exhaust using X pipe or H pipe? i am thinking of making that move for my car and was wondering if anyone could help me out. leave me some comments, everything is helpful. thank you in advance.

[jhenty]

Im sure you know the only way to go is custom. What I would do is have a custom y-pipe made (except no longer a y but possibly an x) and just run it back from there with 2.5" piping, high flow cats, and a good set of mufflers. Personally I wouldn't convert to "true" dual because it would require two cats if your concerned about emissions. I would custom make a y that flows better and direct that into a single cat converter and split from there back. Maybe you can tell us whether or not this is more for looks or for performance?

[ctbuhay]

its somewhat both.. but more towards looks, but i wanna get as much performance out of it as possible. im not too worried abouth the emissions stuff though.

[DaveMush]

2 smaller cats would flow more than one larger cat...

the thing is that you need to have the 3rd o2 sensor in the middle of the x or h in the pipe, it needs to be able to read the result of both banks-worth of exhaust combined.

you need to figure that w/ only 3 cylinders worth of exhaust running through both cats, you will need to size it so they will both light off, but w/o restricting too much. in the v6, the cats are the largest restriction past the stock y-pipe. but then again, the exhaust cams could make huge improvements too...

[ctbuhay]

cool cool. thanks for the info. really helpful stuff. hopefully soon i'll be able to have all of it done. thanks again for the help.