s52 exhaust questions.

[flyboyx]

for those of you who have not kept up with my threads, the car is a mangled 2000 M-roadster with obd2. i removed the exhaust from the car today. can i use any of it such as the cats for my e30? i know it will have to be modified. what about the headers? kinda looks like it may hit the engine cross member. has anyone ran duals on an e30 chassis? i have a 91, so i guess that means i would have to modify the rear valance. i think the duals on the roadster with with the dual stainless tips would look sick on an e30.

[Nick325is]

You can use the obd2 manifolds. You will have to weld air ports on them though. I've got a set that are already interested if you want them.

-Nick

[pedal2metal]

Just use the mid section of the MZ3 exhaust, that's what I did. And plug all the O2 ports except for the one you want to use in front of the cats. I heard you can use a Toyota 22r oil pan drain plug. But I used a few OEM O2 plugs from a 323i (I think). I didn't have to modify the manifolds (I used OBD1 manifolds) or the mid section of the MZ3 exhaust.

[flyboyx]

Just use the mid section of the MZ3 exhaust, that's what I did. And plug all the O2 ports except for the one you want to use in front of the cats. I heard you can use a Toyota 22r oil pan drain plug. But I used a few OEM O2 plugs from a 323i (I think). I didn't have to modify the manifolds (I used OBD1 manifolds) or the mid section of the MZ3 exhaust.

are your running off the cats to a single exhaust or duals?

[Uber E30]

Most people run single but i have seen a few duals. Its a decent amount of fab work.

[jakeb]

I am running stock obdII e36 m3 exhuast on my m50 and couldn't be happier. Manifolds, center section with cats, and the muffler. Perfect sound. I had a single before that and it sounded like ass.

[etxxz]

dual is unnecessary and just adding weight IMO. get the right components and a single could sound as good as mine ; / as for your parts. you can use the headers, downpipe to cat section and if you want to keep the dual you'll have to cut and modify a piece to make it fit but can most likely retain everything else. weld new exhaust hangers etc you're golden and it'll look great too. again unnecessarily heavy imo.