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Old Sep 11, 2004
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mufflers

what's the difference between and axle-back and a cat-back?
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Old Sep 11, 2004
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exactly what it says

From the Axle back is right above the rear "axle". (or is ours wishbone suspension in the back)

From the Catalytic converter back is from the Cat Back....
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Old Sep 11, 2004
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an axle back may give our car a little more performance then a cat back thuough, just so u know, if u don't plan on doing anything major for ur engine, cuz our engines aren't really constricted by the exhaust anyways
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Old Sep 11, 2004
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an axle back is pretty much a muffler and a catback is pretty much the whole exhaust underneath the car, i dont know if that is the correct way to explain it
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Old Sep 11, 2004
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Yeah axle back replaces the entire rear section after the resonator. Catback replaces all the piping from the cat and usually comes with a new resonator.
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Old Sep 11, 2004
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Originally Posted by ACURAwerx
an axle back is pretty much a muffler and a catback is pretty much the whole exhaust underneath the car, i dont know if that is the correct way to explain it
i think you got it backwards... the catback is the one that might give a little more performance
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Old Sep 11, 2004
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no! cuz our engines have so little power, so opening up the exhaust so much especially when u get the bigger piping, more would give us less power, rather then just getting an axle back
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Old Sep 11, 2004
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yeh, ACURAwerx is right..
thats why HKS and JIC (coming soon) only make AxleBack for our car.....that's a reason!
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Old Sep 11, 2004
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That's what I'm using for my DX. An axle back exhaust from obx with the silencer on. I couldn't get a cat back if I wanted to.
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Old Sep 11, 2004
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Yeah you guys got it figured out. Full exhaust is good with turbo, but not NA.
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Old Sep 11, 2004
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Interesting. I always thought that cat back was more powerful for our cars. I'm glad I got axle back.
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Old Sep 11, 2004
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im the man, holla!
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Old Sep 11, 2004
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i think stock exhaust for NA is the best exhaust for our car
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Old Sep 11, 2004
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Yeah even with the rear section (which had slightly bigger piping), I could feel backpressure loss when I first got it put on.
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Old Sep 11, 2004
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are you guys serious about the axle back?

if so, i dont see how that would work though? =\ someone fill me in.
lets say the hks rear section vs 2.25" custom piping with muffler:
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Old Sep 11, 2004
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Well my axle back piping is slightly larger than stock. Catback or larger custom piping will free up the exhaust too much. With our small engines, low end will suffer as a result.
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Old Sep 11, 2004
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for those interested in axleback, either HKS or JIC.
JIC rear section, prototype ready, still testing....
http://www.jic-magic.com/Library/bul...pe1sus_app.htm
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Old Sep 11, 2004
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err think
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Old Sep 12, 2004
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I just put back my rear section today and felt the low end go away again. With the stock exhaust, acceleration up to 3k was faster. Don't know if I'm gonna keep it on. Maybe I'll wait til the intake gets installed and see if it improves.
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Old Sep 12, 2004
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Originally Posted by MIT
for those interested in axleback, either HKS or JIC.
JIC rear section, prototype ready, still testing....
http://www.jic-magic.com/Library/bul...pe1sus_app.htm
ES(2dr) 01- Rear Tail Section only φ60 / φ90 ES2D1-SU 380.00

shouldn't it be "EM2"? never heard of an ES chassis
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Old Sep 12, 2004
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Exclamation

Originally Posted by ACURAwerx
no! cuz our engines have so little power, so opening up the exhaust so much especially when u get the bigger piping, more would give us less power, rather then just getting an axle back

You are wrong, axle-back will not give you more power than the cat-back!

With the axleback you are just eliminating the restriction of the oem muffler.

With the cat-back you get more performance, specially if you increase the ammount of air going thru the engine with a CAI. You eliminate the OEM muffler restriction plus you reduce a lot the engines backpressure. That's why you will get more performance in conjunction with a CAI System. You reduce the hot backpressure, and add freshier air with the CAI system.
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Old Sep 12, 2004
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Originally Posted by gearbox
I just put back my rear section today and felt the low end go away again. With the stock exhaust, acceleration up to 3k was faster. Don't know if I'm gonna keep it on. Maybe I'll wait til the intake gets installed and see if it improves.

With most of the performance parts, you will loose low end power, most performance parts are designed for racing, where you mostly use your higher RPM's, so they sacrifice low end to compensate it with mid power and hi end power.
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Old Sep 12, 2004
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Originally Posted by BlackFire
You are wrong, axle-back will not give you more power than the cat-back!

With the axleback you are just eliminating the restriction of the oem muffler.

With the cat-back you get more performance, specially if you increase the ammount of air going thru the engine with a CAI. You eliminate the OEM muffler restriction plus you reduce a lot the engines backpressure. That's why you will get more performance in conjunction with a CAI System. You reduce the hot backpressure, and add freshier air with the CAI system.
bolt ons do NOTHING for our cars man... just a big waste of money if your not doing FI or swap. the oem exhaust doesn't restrict or make backpressure that much cuz our engines have no power! I think someone dynos their car on here with a AEM CAI and a catback exhaust and they lost power, so they went back to stock... and CAI doesn't do anything for our cars either. maybe theyll add 0.01 hp or something
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Old Sep 12, 2004
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yeah im pretty sure that the cat back gives you more power..
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Old Sep 12, 2004
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Nope. It prolly takes away power. The stock piping is pretty large already. Having any bigger is not gonna help unless you have turbo. And without backpressure, low end will suck.
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Old Sep 12, 2004
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low end sux...and the stock piping is soo small..i couldnt fit my...uh...you know in it .
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Old Sep 12, 2004
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catback give you loud noise, doenst means you go any faster~
cuz I saw some civic with lound noise muffler then slow like turtle.. ..cuz any bolt-on parts is kinda waste money in 7thGen Civic imo!.....its all in your mind!
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Old Sep 12, 2004
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hmm so lets say a 2003 ex manual vs 2003 ex manual WITH apexi n1 exhaust for example: who would win at the 1/4mile line and topspeed? just pretend theirs a driver clone in the other car.

i still believe catback exhaust gain something rather than nothing unless someone can prove me wrong with solid information =|
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Old Sep 12, 2004
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Interesting discussion.
I think a cat back is a better investment.
How can an axle back help?.....much?
The exhaust is almost out of the car by then.
I just removed my cat and i have more flow....and better
response.My catback will be in next week so I will see for myself.
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Old Sep 12, 2004
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the apexi n1 on our car with no turbo is just overkill. turbo exhausts on a little 1.7 liter civic is going to slow it down i believe. Maybe itll make it faster at 6-7 rpms... Itll probably be even... however the 500 bux u paid for the exhaust u could get a nitrous kit or better tires or something to actually make ur car go faster... catbacks are only for performance cars and performance mods.. take for example, if u put an apexi n1 on a wrx, its going to make ur car noticably faster, cuz that is a performance car with a turbo. or the k20s, they are dohc have better vtec and actually have some power u can tap into

Originally Posted by jttegx
hmm so lets say a 2003 ex manual vs 2003 ex manual WITH apexi n1 exhaust for example: who would win at the 1/4mile line and topspeed? just pretend theirs a driver clone in the other car.

i still believe catback exhaust gain something rather than nothing unless someone can prove me wrong with solid information =|
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