cat question

[91dxaccordcb7]

i need to know the stock cat specs like the in/out diameter on the dx 4dr and would 2.5 in/outlet fit thanks

[GhostAccord]

Stock pipe is 2" or 2¼" O.D. If you weld a reducer to each end of the cat it would fit. or if you have a good welder that can fill a ¼" gap it would work.

Why? Are you looking at using a particular Cat or do you have one laying around that you want to use? There are 2" aftermarket universal fit cats for under $100.

[TheNextEpisode]

I've always heard that the stock pipe is 1 3/4" diameter. It seems about that small if you look at it.

Also, be weary of aftermarket cats. They tend to wear out within 2 years.
I've used two carsound cats, each has lasted less than a year.


As far as 2.5 in/out, it'll work. The muffler shop will need to weld adapters probably to the end of your downpipe and start of your exhaust pipe (just before and just after the cat). Like Ghost implied though, unless you already have a 2.5" lying around or if you're looking to go larger on the entire exhaust system, there's no need to use larger than stock.

[91dxaccordcb7]

what i was looking at was the "high flow cat" off ebay for around 25 because i went to install my cat back today and the flanges and bolts and all that was rusted badly and what two are around for less then $100 and does that include shipping?

[GhostAccord]

Walker Exhaust 15036 - $58 It's a walker so I'm pretty sure it's probably available from any parts store no shipping required.

MagnaFlow 53004 - $64 Same thing, go down to your local auto parts store and order it if they don't have it in stock.

MagnaFlow 99004HM - $90 same.....

All of these are stainless steel and available from Summit Racing or any other online parts retailer if you require online purchasing. To have one of these shipped up here to Canada from Summit would cost me $40.