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HKS Exhuast??

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Old Dec 31, 2004
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Exclamation HKS Exhuast??

ok...i got a stock 2001 civic EX (automatic ) ....i really want to put a good exhaust system on it and i was talked out of OBX cuz theyre crappy. Im planning on getting an HKS Hi-Power system (i think it only comes with the rear section). I know exhuast systems decrease back pressure and that its a good thing, but i was told that it may slow down my acceleration or something....is this true? if so, how much? In the end id like to know if purchasing an HKS exhaust for my stock civic is a good idea and what effects (good and/or bad) it will have for me


P.S. plz forgive a newb for askin'
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Old Dec 31, 2004
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hks hi-power exhaust IS a rear section for the 01+civics

as for backpressure, i would say thats more of a good thing because thats what helps you moving on up. from time i been on these boards, everyone loved their hks hi-power exhaust. its not loud, not low, just the right level of sound. the sound it gives is deep and not rapsy at all. comming from HKS, they are very high quality products.

pros:
cocked muffler that sits slanted
sound
looks

cons:
price tag for just an rear section
low end is little loss? <--- not sure but i doubt it



theirs a clip of the hks in the exhaust forum. its stickied

and wrong forum. ibtm
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Old Dec 31, 2004
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backpressure is non-existant. Its not that your piping is too small and the pressure builds up causing your block to crack - NO. Its about the physics of flow. If pipes are bent with jagged edges, the flow of hot exhaust will slow down and hit places. This will cause worse performance and will crack the exhaust piping at some point.

The HKS has great bends and will not decrease your acceleration. You will like its sound and the bit of power bump it will give. The butt dyno will be happy.

All of our exhuasts can be found here:

http://www.truehonda.com/inventory.p...wproducts&id=3
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Old Dec 31, 2004
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is their any increase of horsepower or torque from the hks rear section exhaust?
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Old Dec 31, 2004
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Im selling my HKS exhaust, PM me or email me at ADAMH27@aol.com if your interested. I will sell for cheap!
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Old Dec 31, 2004
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I have the HKS Hi-Power, and I love it. The sound is sexy, not annoying like a freaking bee in a can, nore to loud like flowmaster. It’s perfect, very easy to install, and great quality. Its perfect with our vics to, bc its not like a full catback will actually do anything anywaz for our cars, unless u plan on turbo or swap. You should get, no doubt.
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Old Dec 31, 2004
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i use to have this exhaust, and i love it. The sound is great !!!
ppl say you don't gain much, but when i took the exhaust out, i can feel my car is slower. It might not do much, but it did something to begin with.
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Old Dec 31, 2004
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tanabe sounds nice
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Old Dec 31, 2004
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i want to get this exhuast as well.. but, im 16 low on cash... and just bought an intake instead...and since your a stock civic ex auto [like me] i would say either get that exhuast or get the injen intake... injen intake you will love the sound it gives you and you can feel the little throttle response... i got it and at the first light i just hit the gas like normal and the tires started spinning
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Old Jan 1, 2005
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Ok... how will the sound be with no cat and a 2.5" pipe? still like the exhaust clip in the exhaust forum?
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Old Jan 14, 2005
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wow...thanx alot yall!! ill DREF invest in an HKS system then!!
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Old Jan 14, 2005
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Ok... how will the sound be with no cat and a 2.5" pipe? still like the exhaust clip in the exhaust forum?
haha, that what i want to do, the 2.5 midpipe, its gona have to be custom, but i def wana do for sound. Im in Tx, so I have to have Cat, But yes, it will be really loud, in the HKS Hi-Power Exhuast tip, theres to little holes for a silencer, for the full catback, bc it can get pretty loud.
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Old Jan 15, 2005
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rsr yummie
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Old Jan 15, 2005
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I feel no loss. Only smoother day to day driving. Less backpressure. Got it for $125 shipped used with only 8K miles on there.
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Old Jan 15, 2005
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Jezus, i got for like 300+50. Lucky
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Old Jan 15, 2005
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Yea the rear section is $315.00 in our store.
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Old Jan 15, 2005
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who told you the obx was crap? i got the obx full catback. its full stainless steel, has a greddy evo style muffler and sounds great.. an plus i got it for 150 shipped new. the only thing bad about it was the hangers were too short an it was melting my bumper but i got that fixed for 10 dollars. i love my obx exhaust.
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Old Jan 16, 2005
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Thumbs up Hks

I've had mine for about a month and LOVE IT! I do think there's a little better mid-range power.
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Old Jan 17, 2005
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someone from this forum told me OBX was crap.....but im not gonna make any judgments lol....cuz i dont have one...but still, ima go HKS cuz i trust the name....oh...one more question....will i need any bumper modification to install the HKS muffler and will it be really low to the ground?!?
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Old Jan 17, 2005
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na, i have 04, so it doesnt extend like its suposed to, but it still look fine. it was tested for 01-03...etc. It wont be low at all, unless u do extream lowering to the car, u might scrap it on pots, bumps, etc.
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Old Jan 17, 2005
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you shouldn't have any problems unless your car is lowered...then like 7cyrus said, you'd have problems with any system
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Old Jan 19, 2005
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no lowering here...yet..but im prolly avaoid that...maybe 1" ;-)
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Old Jan 19, 2005
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Originally Posted by truehonda
backpressure is non-existant. Its not that your piping is too small and the pressure builds up causing your block to crack - NO. Its about the physics of flow. If pipes are bent with jagged edges, the flow of hot exhaust will slow down and hit places. This will cause worse performance and will crack the exhaust piping at some point.

The HKS has great bends and will not decrease your acceleration. You will like its sound and the bit of power bump it will give. The butt dyno will be happy.

All of our exhuasts can be found here:

http://www.truehonda.com/inventory.p...wproducts&id=3
WOW. Some one on this board that actually give some back ground info on what they are talking about. Yes, its all about the physics of flow. More precisely, the frequency of the flow. When the pipes are small, the air flows out at a higher frequency(higher number in small amout). When the pipes are larger, they come out in a lower frequency(low number in larger amount).

The idea is to compensate the bending and the piping diameter to get the right frequency where max. amount of air comes out.

How do u find it? Try out different exhausts and piping and then dyno test $$$

My 2 cents
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Old Jan 20, 2005
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HKS = good if i had to redo my exhaust again it would be with the HKS or the Rsr exmag.
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Old Jan 20, 2005
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there you go my friend
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Old Jan 20, 2005
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thanx yall...but just to clarify, i do know the physics of exhaust flow ;-) ....i just needed to know the opinion on the particular HKS muffler and/or system.....i just plan on getting the muffler for now cuz i dont have terribly too much cash lol....but thanx for everyones input and id be glad to hear more :-)...thanx alot yall !!
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Old Jan 20, 2005
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oh, just a sidenote.......7th Gens are the kings of the road!! **** THE REST!!! RSX SWAP ON THE WAY!!!! w00t !!!!
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Old Jan 20, 2005
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well if a swap is on the way then don't get just the axle back. it would be a waste then since a k20 i'm sure would be much more responsive to the cat-back system.
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Old Jan 21, 2005
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A well tuned exhaust system will have to proper amount of back pressure and scavaging to help draw exhaust gases out of the cylinder when the exhaust valve opens up. What happens is the exhaust creates pulses that bounce back through the exhaust system creating a vacuum. This vacuum sucks out spent exhaust gases and helps draw fuel/air in. So when you increase the piping, your decreasing the vacuum.

Make sense? I learned this when I had a SuperTrapp exhaust and when I use to race R/C cars long ago.
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Old Feb 1, 2005
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makes perfrct sense lol !! the k20 aint commin for a while tho, so ima def go ahead and get the exhaust......thanx again for talking to me about HKS stuff.....
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