Daniel Hause

So I was looking around on rockauto, and I noticed an oem-ish exhaust the claimed to be for an automatic Integra only. Just wondering what the difference could be.

Caoboy

Nothing.

The only exhaust difference is the extension piece that a 4 door has.

rollinmyda

iTrader: (19)

90-91 and 92-93 header/cat/exhausts are also slightly different in length . Most aftermarket exhausts will require an extension piece to be used on 92-93. I'd be more worried about the model and year differences than auto vs manual transmission difference.

B_Swapped93

catback wise they're the same it's the exhaust manifold that see's the difference and the CAT.

rollinmyda

iTrader: (19)

No, you're wrong.

"The 90-91 header is longer than the 92-93 header, the 90-91 cat is shorter than the 92-93 cat, and the 90-91 exhaust is shorter than the 92-93 exhaust. This means that if put a 92-93 header on your 90-91 teg simply getting a 92-93 exhaust will not make up the full length, you would also need a 92-93 cat." -Colin

G2IC - Catalytic Converter Length. 90-91 vs 92-93