well i just picked up an apexi exhaust system for 200$ (cheap) but it was meant for an 96-00 civic si/ex. however i have a HX and it's basically the same as the DX (cat on the header) so i was wondering what exactly is the difference and what i would have to modify to make that exhaust system fit onto my HX. thank you in advance, much help is appreciated

 

I don't know why it wouldn't fit. Maybe if the exhaust was originally meant for a coupe, it might be a little long on a hatch

 

yeah i would see the same scenerio also about the coupe vs. hatch, but i've always seen the 96-00 dx always having its own exhaust system aside from the 92-00 ex/si, and always had people telling me i'm not sure if it'll fit on the HX/DX. but never recieved a straight answer.

 

anyone

 

I had the same problem only my car is an 96 EX and I tried to put a DX exhaust on it. Here's the difference, because the cat is in the header on the DX/HX's the exhaust bolts right to the header. Got it?

On the EX, the cat is after the header and the exhaust bolts on the Cat. There fore the DX/HX exhaust is longer then what it would be for an EX/Si.

I installed the DX exhaust by removing the cat all together, thus throwing a code. I then later got a cat welded in at a local shop.


Here's a lil drawing. Bare with me. This is a DX setup.

|
|
|| <--Cat in header.
\
\ ___}_____________------out the back of the car


Here is an EX:

|
| < Header without cat
|
\
\___{_<U>CAT</U>____}[__________________------Out the back of the car.

Hope that helps, because I have now gone cross eyed.

 

In addition to the beautiful ASCII art above I beleive that the flange on the DX exhaust is different from the flange on the EX cat. One is three bolt, the other is two bolt. I remember seeing that in the service manual, but I am doing this from memory as I do not have a book in front of me to reference.

 

alright i guess i'm going to need to extend it, i'll go to a muffler shop and probably try to get a 'test pipe' or something

p.s. love the diagram

 

yea, extension pipes are cheap, i paid 25 for mine. Just look on ebay, test pipe

 

<FONT SIZE="3">Would an EK hatch's stock exhaust fit a 96-00 HX coupe?</FONT>

 

I have a HX and yeah it needs the test pipe and after that it will fit, cuz i had the same problem originally when i put an exhaust on mine.

 

Its 2024, its been 20 years since you posted this. I made an account just to tell you thank you, you saved me $700 CND. Some of you may know but the Trim levels are different in Canada then they are in the US. My car is a 97 Civic LX Coupe (Canadian DX is LX) however somebody previously put EX badges on it. Was looking at catbacks and saw that on Yonaka's website they have EX,GX,Si, then DX,LX, HX. (me being Canadian i was positive that they would use US trims) and holy crap I love forums from the mid 2000's. People like you have been doing gods work for ages. just thank you. Just that diagram shows me yep its a DX/LX saves me so much hassel and potentionally having to send back parts.