R18 Downpipe

undrgnd · 03-14-2007, 08:15 PM

I've been looking everywhere for this, but something looks funny. Isn't there suppose to be an O2 sensor or two on the cat pipe?

http://cgi.ebay.com/ebaymotors/Stain...spagenameZWDVW

cojaro · 03-14-2007, 08:47 PM

The R18 downpipe does't replace the cat. convert.

modoko · 03-14-2007, 08:56 PM

Downpipe for R18 means the half of the header... Nice find, +1

undrgnd · 03-14-2007, 09:08 PM

Quote:

Originally Posted by cojaro

The R18 downpipe does't replace the cat. convert.

So you're saying that the 'downpipe' for the Civic is actually the horizontal piece that runs downstream of the vertical catalytic converter casing connected to the head? If that is true, then this 'downpipe' should be replaced by any 'cat-back' system out there, correct?

Has anyone found a cat-delete pipe for the 2006/7 R18 yet?

cojaro · 03-14-2007, 09:11 PM

Quote:

Originally Posted by undrgnd

So you're saying that the 'downpipe' for the Civic is actually the horizontal piece that runs downstream of the vertical catalytic converter casing connected to the head? If that is true, then this 'downpipe' should be replaced by any 'cat-back' system out there, correct?

Has anyone found a cat-delete pipe for the 2006/7 R18 yet?

Odd thing is, that's incorrect. This downpipe (it's also sold by corsport for $150 shipped) picks up where the R18 cat-backs leave off. For some odd reason, the R18 cat-backs (as far as I know) only include the axle-back and mid-pipe; this downpipe completes the cat-back exhaust by replacing the A-pipe that's right after the cat.

undrgnd · 03-14-2007, 11:08 PM

The Magnaflow appears to include all three sections. http://www.magnaflow.com/02product/s...=Sport&id=1179
I would still like to locate a cat-delete pipe for the '07 R18, if anyone finds one.

cojaro · 03-14-2007, 11:12 PM

Quote:

Originally Posted by undrgnd

The Magnaflow appears to include all three sections. http://www.magnaflow.com/02product/s...=Sport&id=1179
I would still like to locate a cat-delete pipe for the '07 R18, if anyone finds one.

I have it and it doesn't include the A-pipe.

03-14-2007, 08:15 PM	#1 (permalink)
undrgnd Senior Member Join Date: Feb 2007 Location: USA Posts: 166 iTrader: 0 / 0%	R18 Downpipe I've been looking everywhere for this, but something looks funny. Isn't there suppose to be an O2 sensor or two on the cat pipe? http://cgi.ebay.com/ebaymotors/Stain...spagenameZWDVW

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03-14-2007, 08:47 PM	#2 (permalink)
cojaro Senior Member Join Date: Mar 2006 Location: Memphis Age: 20 Posts: 1,206 iTrader: 1 / 100%	The R18 downpipe does't replace the cat. convert.

03-14-2007, 08:56 PM	#3 (permalink)
modoko Senior Member Join Date: Jul 2006 Location: Montreal Posts: 653 Daniel iTrader: 2 / 100%	Downpipe for R18 means the half of the header... Nice find, +1

03-14-2007, 11:08 PM	#6 (permalink)
undrgnd Senior Member Join Date: Feb 2007 Location: USA Posts: 166 iTrader: 0 / 0%	The Magnaflow appears to include all three sections. http://www.magnaflow.com/02product/s...=Sport&id=1179 I would still like to locate a cat-delete pipe for the '07 R18, if anyone finds one.