Honda Civic DIYs and Civic Tech ChatHonda Civic DIYs and Civic Tech Chat - for the true gearheads! Bring your wrench, it's time for some Honda Civic DIY projects! Questions about problems with your car do NOT go here.
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Yeah, go with the random tech cat if you want a higher flowing downpipe and cat then the stock one and dont want to pollute the world without running one. In fact, the RT pipe will flow just as good as running catless, without the added harmful effects on the environment. Pick it up
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Ok, so they offer an "installation kit" with the catalytic converter
I'm assuming this is the bolts I need to install it
Also, what size 02 extender cable would be appropriate?
I'm guessing 24 inch would be plenty, but car is an LX, so they stock cat position was pretty close...
Last edited by Mavrick272; 03-14-2009 at 05:29 PM.
Ah man I wish I had came to this thread b4. Just bought a whole catback exhaust which was on a EM2 EX but I have a 4dr 05 LX. Feelin sooo down
The thread was here, you werent... that sucks! lol
Quote:
Originally Posted by Mavrick272
Ok, so they offer an "installation kit" with the catalytic converter
I'm assuming this is the bolts I need to install it
Also, what size 02 extender cable would be appropriate?
I'm guessing 24 inch would be plenty, but car is an LX, so they stock cat position was pretty close...
I just bought a 2008 civic ex-l 2dr. I need to change the cataylic converter, honda wants $580 my question is can i eliminate it with a pipe and connect the o2 sensors or do i need to replace it? Thank you for your help. Justin
No, i live in florida we don't have emission testing. I will be keeping the stock muffler, and don't really want a loud exhaust. Will this be possible without the cat?
I just bought a 2008 civic ex-l 2dr. I need to change the cataylic converter, honda wants $580 my question is can i eliminate it with a pipe and connect the o2 sensors or do i need to replace it? Thank you for your help. Justin
If your cat failed, then take it to honda- it has an extended warranty and should be replaced for free.
Triz - got the header, cat and catback on.
It went pretty well, BUT there was about an inch and a half gap I had fudge
This fudging caused the S-shaped section of the cat-back to be planted firmly against a chunk of the frame, causing it to be quite loud as you'd imagine.
I need some advice
What are my options here?
is there a some kind of spacer avaliable for it?
I'm thinking taking it to a muffler shop and having them weld a piece into my midpipe to make it longer is going to be my best bet
Last edited by Mavrick272; 04-06-2009 at 12:58 AM.
Yeah that might be the best idea... Can you tell where the problem is? Look for if any of the exhaust hangers dont hang directly inline with those welded on your car, this will be pretty obvious and give you a good idea of where the problem starts. Also look to see if the bend over the control arm is a good bend and not making any contact
ok. I have an ex with megan headers, megan downpipe/test pipe. first I had an apexi n1 catback and it rattled when it was abour 3-4k rpm. I took off the whole cat-back and put my stock cat-back on and it still rattles at around that rpm. It seems the rattling is coming from the testpipe/down pipe. any ideas on why that is?
and if something is wrong, is there a point on running just the megan headers with stock downpipe and stock catback or even the megan headers with stock downpipe and apexi n1 catback? the rattling is kinda annoying...
ok. I have an ex with megan headers, megan downpipe/test pipe. first I had an apexi n1 catback and it rattled when it was abour 3-4k rpm. I took off the whole cat-back and put my stock cat-back on and it still rattles at around that rpm. It seems the rattling is coming from the testpipe/down pipe. any ideas on why that is?
and if something is wrong, is there a point on running just the megan headers with stock downpipe and stock catback or even the megan headers with stock downpipe and apexi n1 catback? the rattling is kinda annoying...
Its lose. Are you using the stock spring loaded bolts?? Those things are crap and might have snapped. If your using the stock downpipe you need that donut gasket at the top of the downpipe that creates the seal at the header connection. Also use real hardware, not those stocker spring bolts.
If thats not the problem then check the connection between the downpipe and the cat back.
If thats not the problem... then check clearance issues. The exhaust flexes because the engine flexes. So it might be hitting your sway bar or something. If you have an lx/dx sway on your car the cat will be touching, there just isnt enough room and you'll need to lose the bar and pick up an EX or RSX front sway.
