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Old Oct 28, 2003
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LX exhaust into EX

hey guys, im stupid, silly and always change my mind

i did research on the internet and i couldnt find crap on what i was lookin for. so i decided to go here and see if u guys can help me out

1. has anyone done full header to muffler with brand name bolts on parts on a 01-03 LX (think they have the same exhuast system)

i really like the greddy evo cat back exhuast....but damn they dont make them for my 03 LX...i was searching around and i saw greddy makes header too...and again they dont make for my damn 03 LX.

2. how would i go around putting them on? what would i have to do, to have them on and drive it with out any problems?

thx u guys.
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Old Oct 28, 2003
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the greddy evolution exhaust would fit on any car (i dunno about sedan)

but the header will be different

don't get greddy header....don't get header at all actually

psssshhh
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Old Oct 28, 2003
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This is actually an easy conversion.

What you need is an EX header (and/or downpipe), EX front anti sway bar, and the EX exhaust of your choice.

Bolt it on and you're done.

And yes, GReddy works on the sedan. The coupe and sedan share the same chassis. There's no difference between the two.
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Old Oct 29, 2003
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It can be done easily by a shop. Like SlammedBlueEM2 said, get a aftermarket header that's made for the EX, then get a high flow cat (I recommend the Random Technology EX Cat) , then just get the GReddy EVO catback. All should bolt up... all you need to do is get the shop to extend the wires that run to the Cat because it's mounted in a different area then the EX.
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Old Oct 29, 2003
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well i talked to my friend about this

he was saying....i should get an LX header and muffler.....bring those 2 items to the shop....and the shop will fill up the middle part (piping and high flow catalyst)

u guys think it will work?
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Old Oct 29, 2003
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will they reuse your resonator? otherwise it will sound ricey and loud.
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Old Oct 29, 2003
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How many threads are you going to start about this j/k
there one in so cali also anyway like i said when we talked about this yesterday get a ex header and put a universal cat underneath or get a full ex ehaust conversion like me then get a ex header and cat back
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Old Oct 29, 2003
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Originally posted by R1Style
It can be done easily by a shop. Like SlammedBlueEM2 said, get a aftermarket header that's made for the EX, then get a high flow cat (I recommend the Random Technology EX Cat) , then just get the GReddy EVO catback. All should bolt up... all you need to do is get the shop to extend the wires that run to the Cat because it's mounted in a different area then the EX.
hey dave.....this sounds simple u think it will work? kamikazi header, high flow cat, greddy evo cat-back.....and go to the shop and have them put it...weld in if nessesary
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Old Oct 29, 2003
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Ya its pretty simple and yes you will have to have them weld in the cat converter the header is really simple and you can have them make you 2.25 inch piping all the way to the greddy evo muffler . Itll sound really good and give you more horespower
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Old Oct 29, 2003
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Doing it the way I mentioned is your best bet.... there will be no welding at all... everything should bolt up.
The only thing you have to worry about is the o2 wires not being long enough, but any shop can fix that.

Last edited by R1Style; Oct 29, 2003 at 12:44 PM.
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Old Oct 29, 2003
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no. get a header for a EX. buy a o2 bung, and a o2 simulator.
take the header and bung into a muffler shop and have them make you a three inch extention. 2.25" have them weld in your header.

make shure you install the o2 simulator first!!

then buy a muffler. you don't need to do your intermediate pipe unless you have mad compression, or turbo.
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Old Oct 29, 2003
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Originally posted by R1Style
Doing it the way I mentioned is your best bet.... there will be no welding at all... everything should bolt up.
The only thing you have to worry about is the o2 wires not being long enough, but any shop can fix that.
hey r1style.....yea i like ur way

but lets say i have..... dc header/ random tech. cat. / greddy evo cat back exhuast...ok

when u bolt everythong end to end.....i think its longer then the car(not sure just how i would see it) or it would fit exactly into place under the car
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Old Oct 29, 2003
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imagin all these connect 2gether
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Old Oct 29, 2003
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Last edited by Civic_Racer9; Oct 29, 2003 at 02:45 PM.
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Old Oct 29, 2003
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and the catatylic converter is about what? 18-24 inches?

i would think starting from the engine, with all those connec 2gether, the entire muffler would stick out behind the car

am i right?
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Old Oct 29, 2003
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random tech. ex cat.
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Old Oct 29, 2003
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ok im just stupid .....im beginning to see what it looks like (do i have to move the front strut bar?)

ok i know greddy evo cat-back is legal
kamekazi is NOT (if u guys know any legal brand name header...plz name some) DC is, it just sux
is the random technology high flow cat legal?
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Old Oct 29, 2003
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Yup you have to remove the front sway bar i had to i thought if you could move the cat down a little the sway bar would clear but it doesnt you have to buy one for a ex good excuse to buy aftermarkte one
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Old Oct 30, 2003
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Originally posted by civic-king
no. get a header for a EX. buy a o2 bung, and a o2 simulator.
take the header and bung into a muffler shop and have them make you a three inch extention. 2.25" have them weld in your header.

make shure you install the o2 simulator first!!

then buy a muffler. you don't need to do your intermediate pipe unless you have mad compression, or turbo.
I just went to a muffler shop today and asked them to do this, only I wnted to be able to unbolt it so that I could swap the factory header back in for emisisons testing time, but they were acting as if it was the hardest thing they've ever done. I'm going to try some other places tomorrow. Makes me want to buy my own welder and do it myself.
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Old Nov 1, 2003
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Originally posted by CoupeStylz
I just went to a muffler shop today and asked them to do this, only I wnted to be able to unbolt it so that I could swap the factory header back in for emisisons testing time, but they were acting as if it was the hardest thing they've ever done. I'm going to try some other places tomorrow. Makes me want to buy my own welder and do it myself.
then....just get the "extension" welded to the header. i don't know where you will get the flange for the bolts on the other side.....
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Old Nov 2, 2003
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Originally posted by Civic_Racer9
ok im just stupid .....im beginning to see what it looks like (do i have to move the front strut bar?)

ok i know greddy evo cat-back is legal
kamekazi is NOT (if u guys know any legal brand name header...plz name some) DC is, it just sux
is the random technology high flow cat legal?
DC Sports is the prime example on why legal headers suck PERIOD.

Replacing your catalytic converter is NOT legal. You might as well just get the right header for your car that'll actually produce power.
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Old Nov 5, 2003
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Actually I just read some where that replacing your catalytic convertor is perfectly legal,just as long as it passes emmisions.And I just saw a list in import tuner of 50 state lega/carb exempt hi-flo cats.
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