Intake/Exhaust Question (04 Civic LX) - Honda Civic Forum

Member's Rides Show off your rides progression thru mods or post up your detail job and that new mod. Your goal: make everyone jealous!

Intake/Exhaust Question (04 Civic LX)

Old 05-27-2009
  #1  
Registered!!
Thread Starter
 
Join Date: May 2009
Posts: 1
Rep Power: 0
XxRainyCloudsxX is an unknown quantity at this point
Intake/Exhaust Question (04 Civic LX)

Just Recently Bought a 2004 Civic LX,
Factory Engine,1.7-liter four-cylinder engine.
Figured i would start with buying a good intake and exhuast system first before i do any other mods to it.
My Qustion is Which intake and Exaust system would be the best for this type of Engine and would fit the best in the civic.
Ive looked around a little but im a little new to mod's So any help would be great.
Also if you could tell me a good place to buy from, or if it would be better to find a used one.

Pics.
Name:  Image067.jpg
Views: 42
Size:  38.4 KB
Name:  Image065.jpg
Views: 38
Size:  53.7 KB

Last edited by XxRainyCloudsxX; 05-27-2009 at 02:14 PM.
XxRainyCloudsxX is offline  
Old 05-27-2009
  #2  
Premium Member
Hey! Look At Me!! I'm a Supporting Member!!
iTrader: (95)
 
Join Date: Sep 2002
Location: NV
Age: 38
Posts: 51,312
Rep Power: 725
gearbox has a reputation beyond reputegearbox has a reputation beyond reputegearbox has a reputation beyond reputegearbox has a reputation beyond reputegearbox has a reputation beyond reputegearbox has a reputation beyond reputegearbox has a reputation beyond reputegearbox has a reputation beyond reputegearbox has a reputation beyond reputegearbox has a reputation beyond reputegearbox has a reputation beyond repute
Re: Intake/Exhaust Question (04 Civic LX)

prolly go with aem v2 intake, and any name brand exhaust (greddy, dc, apexi)
gearbox is offline  
Old 05-30-2009
  #3  
Registered!!
 
Join Date: Feb 2009
Posts: 56
Rep Power: 122
bman11 will become famous soon enough
Re: Intake/Exhaust Question (04 Civic LX)

hey man, and 05 lx and i put a aem v2 in it, i love it sounds good. i have been looking for exhausts for a while now and having trouble finding some that will fit the lx that dont have to large of a price tag. personally i realy like the greddy se but around my place it retails at a grand, and shipping plus fees from anywhere else woujld b just as expensive. other option is to do an ex exhaust swap but to me anyways sounds like more than its worth, read triz faq about exhausts. just search his name
bman11 is offline  
Old 10-07-2010
  #4  
Registered!!
 
shasam1721's Avatar
 
Join Date: Aug 2009
Location: Harrisburg
Age: 28
Posts: 13
Rep Power: 0
shasam1721 is an unknown quantity at this point
Re: Intake/Exhaust Question (04 Civic LX)

yea im trying to find how to get an adapter to make the greddy se catback exhaust fit the 04 lx sedan when they sell it for the coupe.
shasam1721 is offline  
Old 10-07-2010
  #5  
Low and slow!
 
02civicsi02's Avatar
 
Join Date: Jan 2010
Location: Marion, NC
Posts: 1,628
Rep Power: 127
02civicsi02 will become famous soon enough
Re: Intake/Exhaust Question (04 Civic LX)

Your better off just keeping the motor stock.
02civicsi02 is offline  
Old 10-07-2010
  #6  
Kenny the Ricer
iTrader: (1)
 
Kennykid2002's Avatar
 
Join Date: Oct 2009
Location: In your trunk
Age: 28
Posts: 5,580
Rep Power: 204
Kennykid2002 has a reputation beyond reputeKennykid2002 has a reputation beyond reputeKennykid2002 has a reputation beyond reputeKennykid2002 has a reputation beyond reputeKennykid2002 has a reputation beyond reputeKennykid2002 has a reputation beyond reputeKennykid2002 has a reputation beyond reputeKennykid2002 has a reputation beyond reputeKennykid2002 has a reputation beyond reputeKennykid2002 has a reputation beyond reputeKennykid2002 has a reputation beyond repute
Re: Intake/Exhaust Question (04 Civic LX)

Why revive threads?
Kennykid2002 is offline  
Old 10-07-2010
  #7  
Administrator
Administrator
iTrader: (1)
 
sdaidoji's Avatar
 
Join Date: Dec 2008
Location: TN
Age: 47
Posts: 9,043
Rep Power: 218
sdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud of
Re: Intake/Exhaust Question (04 Civic LX)

Originally Posted by Kennykid2002 View Post
Why revive threads?
if they are interesting or really funny, i would not mind, but this is a Intake/Exhaust Question (04 Civic LX) posted in the honda civic's members' rides forum.
run, noob! run!
try be be as succesful as Forest Gump and Run!
sdaidoji is online now  
Old 10-07-2010
  #8  
Administrative Rice. WAT?!
Hey! Look At Me!! I'm a Supporting Member!!
Administrator
iTrader: (22)
 
xRiCeBoYx's Avatar
 
Join Date: Aug 2003
Location: Las Vegas, NV
Age: 34
Posts: 18,170
Rep Power: 388
xRiCeBoYx has a reputation beyond reputexRiCeBoYx has a reputation beyond reputexRiCeBoYx has a reputation beyond reputexRiCeBoYx has a reputation beyond reputexRiCeBoYx has a reputation beyond reputexRiCeBoYx has a reputation beyond reputexRiCeBoYx has a reputation beyond reputexRiCeBoYx has a reputation beyond reputexRiCeBoYx has a reputation beyond reputexRiCeBoYx has a reputation beyond reputexRiCeBoYx has a reputation beyond repute
Re: Intake/Exhaust Question (04 Civic LX)

I think that's the trend nowadays.. reviving 1+ year old threads.
xRiCeBoYx is offline  
Old 10-07-2010
  #9  
Low and slow!
 
02civicsi02's Avatar
 
Join Date: Jan 2010
Location: Marion, NC
Posts: 1,628
Rep Power: 127
02civicsi02 will become famous soon enough
Re: Intake/Exhaust Question (04 Civic LX)

Wow I cant believe I didnt catch it that this is a yr old thread.
02civicsi02 is offline  
Old 10-11-2010
  #10  
Registered!!
 
shasam1721's Avatar
 
Join Date: Aug 2009
Location: Harrisburg
Age: 28
Posts: 13
Rep Power: 0
shasam1721 is an unknown quantity at this point
Re: Intake/Exhaust Question (04 Civic LX)

ive already got performance headers that i know fit my car cause i put them on for a week, but i want to be legal so im going to just get a hi flow cat make some 02 wire extensions and get a piece of pipe to make it all work from a muffler shop. im hell bent on this exhaust. ive heard some people are having trouble doing this setup. they get a CEL? and i figured they just attached 1 sensor to the headers and brought the other down behind the cat. o and does anyone know where you can get a carbon gasket for between the headers and the down pipe? (i cracked mine in half on accident...)
shasam1721 is offline  
Old 10-11-2010
  #11  
Dr Krieger of Modification
 
mac25's Avatar
 
Join Date: Jul 2010
Location: canada
Posts: 2,418
Rep Power: 130
mac25 is a name known to allmac25 is a name known to allmac25 is a name known to allmac25 is a name known to allmac25 is a name known to allmac25 is a name known to allmac25 is a name known to all
Re: Intake/Exhaust Question (04 Civic LX)

since i just posted this for someone else i'll past it here two for you. might answer some questions.



first off you need to know why you want an exaust set up.
power?
sound?
looks?

you won't make much power (hp or torque) even if you have a full setup, which i do.
i have
~k&n short ram intake, new $320 (but don't be stupid like me and buy brand nam, get it off ebay for $50 then buy a good aem filter)

~stock ex header (you don't need a bigger header if you have an ex since the exaust ports from the head match the header diameter. you only need bigger if you port your head)

~2in downpipe (not sure if it was stock buy it was on the exhaust when i bought her)

~2.25in megnaflow high flow cat. $100 new (make sure to get the one with the bunt whole for the air sencor between the two converter plates)

~2.25in megnaflow cat. back exhaust, $150 craigslist

~custom welded and cut for $170, for parts, labor, and tax.

with all of that i've seen minor gains in power and torque. my automatic is now at 8.2-8.5 seconds for 0-60, which is around the best time i've seen for a stock manual. so don't expect a rocket after you do intake and exhaust.

however it sounds amazing!!!!!!! and looks way better.

you also have to think about money. buying from ebay and craigs list is good for non vitale parts of your car.

now for your question. the lx (which my mom owns, has a very restrictive exhaust manifold, which has a built in catalitic converter. that will be your most restrictiv section of exaust flow. you have to remember that the smalest diameter size tube for your exhaust system (header,downpipe,cat. and cat. back) will be very restrictive even after you put a cat. back exhaust on, like you want. so if you want as much power as these bolt ons will let you have the ex header is definately better.

the ex header will bolt directly on to your lx head because both cars have the exact same engine. the lx has the d17a1 and the ex the d17a2 (there's also an a3 but don't worry). all the a2 means is that the ex has a vtec system attached to the same base engine that you have.

if you swap the header you'll need to buy a catolitic converter. what's nice is that a stock size cat., 1.25inch, is around the same price as a high performence high flow cat. (mine was $100 after tax). you'll also need to extend your o2 senosor.

there are 3 o2 sensors. one in your intake, one after the header and one in the cat.

the one in the cat. is the one you'll need to extend (just cut the wires extend with wire with high heat rated insolalation wire and remember to get the type of cat. with the air sensor whole in between the two converter plates like i mentioned above).

if you're just going for the exhaust but don't want it to do anything but look cool and sound a bit loader then just take what you bought to a GOOD exaust shop tell them to weld a pipe to extend it to the cat in your lx. they might need to add some 3bolt flanges but any decent shop can do it.

if you are going for the maximum amount of gains you can get off intake and exaust you also have to think about the diameter of piping you use. you need back pressure (i don't know the exact sciennce of it so google it). if you already baught a 2.5inch cat. back don't despare but try to get a 2.25in downpipe and cat. 2.25 is better for our car's since the engines are so low in displacment.

but if you're eventually going FI (forced induction, ie turbo or supercharged), then you'll want 3inch piping so your car can breath properly with the much higher volume exhaust of the FI setup.

2.5 is ok and alot of people us it even on the 7th gen civics, but i've read on this forum and others that 2.25 is best for NA (naturally asparated engines, so stock engines without turbo or supercharged).
mac25 is offline  
Old 10-11-2010
  #12  
Administrator
Administrator
iTrader: (1)
 
sdaidoji's Avatar
 
Join Date: Dec 2008
Location: TN
Age: 47
Posts: 9,043
Rep Power: 218
sdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud ofsdaidoji has much to be proud of
Re: Intake/Exhaust Question (04 Civic LX)

OK, if Gearbox is seeing this, please stick Mac's post - not the thread, but his post!
sdaidoji is online now  
Old 10-12-2010
  #13  
Dr Krieger of Modification
 
mac25's Avatar
 
Join Date: Jul 2010
Location: canada
Posts: 2,418
Rep Power: 130
mac25 is a name known to allmac25 is a name known to allmac25 is a name known to allmac25 is a name known to allmac25 is a name known to allmac25 is a name known to allmac25 is a name known to all
Re: Intake/Exhaust Question (04 Civic LX)

thx sdaidaji! lots of people on here have helped me out and i want to do the same for others.
mac25 is offline  
Related Topics
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
gearbox
Electrical
72
11-27-2015 09:13 PM
bsmiley
7th Generation Civic
3
04-27-2015 02:27 PM
vtechcivic
Mechanical Problems/Vehicle Issues and Fix-it Forum
5
04-21-2015 08:11 PM
dano2005
7th Generation Civic
4
04-14-2015 02:58 AM
colombianDXcivic
Bolt-on Engine Performance
2
11-08-2001 01:14 AM


Thread Tools
Search this Thread
Quick Reply: Intake/Exhaust Question (04 Civic LX)


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.