civic si downpipe

maxxnitro88 · 12-06-2007, 05:43 PM

is the only difference between the si and rsx exhaust header the little turn at the end? if this is true wouldn't it be easy to just cut an rsx downpipe and weld it to make it straight enough to work for the si? Because 50 buck for a downpipe beats 300 for a RH if you only want to eliminate the cat.

***furryferret7888*** · 12-06-2007, 05:45 PM

pics maybe?

Tom · 12-06-2007, 06:18 PM

Quote:

Originally Posted by maxxnitro88

is the only difference between the si and rsx exhaust header the little turn at the end? if this is true wouldn't it be easy to just cut an rsx downpipe and weld it to make it straight enough to work for the si? Because 50 buck for a downpipe beats 300 for a RH if you only want to eliminate the cat.

if that were the case, wouldn't it be alot easier to just use the rsx header!

k20beast · 12-06-2007, 11:17 PM

im sure the ahnger part of it is differnt to... so im sure no exhaust will fitunless it specific for you car, but the header/downpipe is the same for 4/2dr

***djpreview*** · 12-09-2007, 11:32 PM

where can we buy a 3" downpipe for an Si
i've looked everywhere and i can't find it...
please post a website if possible...
thanks..

HANEY · 12-10-2007, 09:01 AM

I believe AJP manufactures one....not positive though.

chenslee_cheese · 12-10-2007, 09:40 AM

The stock downpipe is not as simple as it looks. It's actually a 4-2-1 setup, the header is the 4-2, and then the down pipe is the 2-1 section. I was dead-set on making my own catless downpipe unitll I took that fugger off and saw this:

Thats what the header dumps into.
Just get a race header and be done with it.

12-06-2007, 05:43 PM	#1 (permalink)
maxxnitro88 Senior Member Join Date: Nov 2007 Location: Columbus OH Age: 20 Posts: 430 dcrh finally on!!!! iTrader: 1 / 100%	civic si downpipe is the only difference between the si and rsx exhaust header the little turn at the end? if this is true wouldn't it be easy to just cut an rsx downpipe and weld it to make it straight enough to work for the si? Because 50 buck for a downpipe beats 300 for a RH if you only want to eliminate the cat.

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12-06-2007, 05:45 PM	#2 (permalink)
*furryferret7888* LEGAL in 36 states Join Date: Oct 2007 Location: mobile alabama Age: 20 Posts: 1,393 kris iTrader: 2 / 100%	pics maybe?

12-06-2007, 11:17 PM	#4 (permalink)
k20beast Senior Member Join Date: Feb 2007 Location: clemson SC Age: 18 Posts: 1,158 zack iTrader: 2 / 100%	im sure the ahnger part of it is differnt to... so im sure no exhaust will fitunless it specific for you car, but the header/downpipe is the same for 4/2dr

12-09-2007, 11:32 PM	#5 (permalink)
*djpreview* VIP Member Join Date: Jun 2007 Location: L.A. Posts: 1,017 iTrader: 0 / 0%	where can we buy a 3" downpipe for an Si i've looked everywhere and i can't find it... please post a website if possible... thanks..

12-10-2007, 09:01 AM	#6 (permalink)
HANEY Member Join Date: Jun 2007 Location: South, Jerzy Posts: 40 Brendan iTrader: 0 / 0%	I believe AJP manufactures one....not positive though.

12-10-2007, 09:40 AM	#7 (permalink)
chenslee_cheese Senior Member Join Date: Sep 2005 Location: Beaumont,Tx Age: 32 Posts: 416 Performance>Aesthetics iTrader: 0 / 0%	The stock downpipe is not as simple as it looks. It's actually a 4-2-1 setup, the header is the 4-2, and then the down pipe is the 2-1 section. I was dead-set on making my own catless downpipe unitll I took that fugger off and saw this: Thats what the header dumps into. Just get a race header and be done with it.