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Question about claimed hp increase with CAI & exhaust muffler...

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Old Sep 25, 2002 | 06:03 PM
  #1  
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Default Question about claimed hp increase with CAI & exhaust muffler...

i question the claimed 10 hp/15 hp for the intake and exhaust respectively. Those 2 alone adds for 25 hp on the base of 160 hp (own a 92 prelude si) which represents approx. a 20% increase in hp. do you think you can purchase 25 hp for $150.00??????? i dont think so..
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Old Sep 25, 2002 | 07:00 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (92ludeSI)

me and my dad were talking discussing, and pretty much agreed that its impossible to get 25 hp for $150.00 bones.. and he is a car guru ( he owns a '91 300zx) and loves everything bone stock on it, cept for front and real Strut bars and clear lenses.. jes wanted to see some opinions.. thnx..
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Old Sep 25, 2002 | 07:04 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (92ludeSI)

lol of course not.

intake = 2-3hp

muffler = 0hp + gay noise.
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Old Sep 25, 2002 | 07:22 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (illusion)

lol of course not.

intake = 2-3hp

muffler = 0hp + gay noise.
False. Many intakes and mufflers produce more power that. A straight through muffler would still make power even on a stock honda cat-back.
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Old Sep 25, 2002 | 07:59 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (Mike95lude)

just alone.. maybe 2-6 for all of it.. well made..

but those items are good along with other mods

not just by themself
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Old Sep 25, 2002 | 09:12 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (KTeller8)

intake will give you more power.
exhaust will give you more power.

the intake (cold air intake) draws in cooler and more dense air, thus resulting in more power being made.

the exhaust will let the exhaust gases escape better thus resulting in more power.

it wont give you 25 hp, but it will give you anywhere from 5-8(?) hp somehtin like that throughout the powerband. bigger engines generally respond better to performance mods. with a 350 small block lets say, 25+hp would be reasonable for intake and exhaust.
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Old Sep 25, 2002 | 10:18 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (wildstallion)

Of course it'll give you 25hp, My I/H/E got me 40 hp according to my butt dyno lol. A nice intake and catback is good for about 10 hp to the wheels, right guys?
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Old Sep 25, 2002 | 10:22 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (piotrush)

on most cars, the AEM CAI dyno's at 7-10 hp to the wheels

i'm not sure about a muffler, but you shouldn't really buy one for performance, get a cat-back if you want performance.

but a cold air intake is probably the best bolt on mod for the buck for any honda
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Old Sep 25, 2002 | 10:41 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (92ludeSI)

Why waste money on a muffler when you take the muffler off like me?
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Old Sep 25, 2002 | 11:13 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (typeSwarrior)

Why waste money on a muffler when you take the muffler off like me?
You're right that actually does help. One thing you all need to understand is how important muffler design is in the power output of an exhaust system. Stock vehicles are equipped with incredibly restrictive mufflers. That is why they make no measurable noise from more than like 2 feet away.

Take a stock Prelude VTEC exhaust system and put on an N1 style muffler. This system will have 2.0 inch piping with a no-restriction muffler. You could compare this to a full cat-back system like the Apex'i WS. Which has 2.36 inch piping....but still, a restrictive muffler.

The one that will make the most power is the first one I listed and that is fact. It doesn't matter how large your exhaust piping is if you still have a brick wall for a muffler. The most important piece to a high output exhaust system is a low-restriction muffler.


[Modified by Mike95lude, 12:17 AM 9/26/2002]
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Old Sep 26, 2002 | 05:10 AM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (Mike95lude)

i feel like its kinda like a "domino" effect hand-in-hand. your not gonna get EXTREME amounts of hp (or anything really noticable) with jes intake/exhaust. if ya get one thing, ya got to get another to compensate for what your getting. ya get your throttle body, than ya got to get your camshaft, than ya got to get ya headers, blah, blah, blah. quick fix jes isnt gonna do it..
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Old Sep 26, 2002 | 06:04 AM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (92ludeSI)

If you're doing exhaust, do header as well. The stock header is restrictive too. My stock dyno shows the power tanks after 6800rpms, I would attribute this mostly to the restrictive header exhaust not being able to move the exhaust gases.

92ludeSI make sure you're talking about "at the wheels" for power gains, usually product makers give crank numbers becuase they can't really be validated.
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Old Sep 26, 2002 | 06:33 AM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (92ludeSI)

If you want the biggest bang for your buck get a AEM CAI, If you really want cheap power get nos..
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Old Sep 26, 2002 | 06:53 AM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (95vtec****)

If you want the biggest bang for your buck get a AEM CAI, If you really want cheap power get nos..
AEM CAI is not your biggest bang for your buck!
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Old Sep 26, 2002 | 07:00 AM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (satan_srv)

what is then...i hate it when ppl don't finish their sen....
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Old Sep 26, 2002 | 07:00 AM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (Mike95lude)

Why waste money on a muffler when you take the muffler off like me?

You're right that actually does help. One thing you all need to understand is how important muffler design is in the power output of an exhaust system. Stock vehicles are equipped with incredibly restrictive mufflers. That is why they make no measurable noise from more than like 2 feet away.

Take a stock Prelude VTEC exhaust system and put on an N1 style muffler. This system will have 2.0 inch piping with a no-restriction muffler. You could compare this to a full cat-back system like the Apex'i WS. Which has 2.36 inch piping....but still, a restrictive muffler.

The one that will make the most power is the first one I listed and that is fact. It doesn't matter how large your exhaust piping is if you still have a brick wall for a muffler. The most important piece to a high output exhaust system is a low-restriction muffler.
[Modified by Mike95lude, 12:17 AM 9/26/2002]
You know what's really funny though, I really have mine removed, and the gains I'm sure are just as good as a $600 catback...the only thing is that it's loud, BUT it sounds damn good with the CAI on it as well. Me and my best friend are two of the loudest but still good sounding Hondas compared to a lot of people with expensive raspy sounding catback systems around here. Yeah, I'll admit quiet exhaust sounds really clean and subtle, and is more environmental friendly--but VTEC engagment without the muffler is ungodly sounding--seriously my folks can here me blocks away if I'm getting on it. It sounds almost like a bike, except deeper, lol. I've even had a few ask me how much I paid for my "catback," seriously, because they wanted their Civic to sound that way
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Old Sep 26, 2002 | 07:45 AM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (typeSwarrior)

the best performance muffler is no muffler at all.
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Old Sep 26, 2002 | 02:49 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (h22congee!)

Is it worth taking off your muffler if the cops are going to be on your *** whenever they hear you? Thats the biggest reason why I wouldn't do it. I bet the fine for that sort of thing is pretty big.
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Old Sep 26, 2002 | 06:16 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (piotrush)

while we're on the topic... is it true that a stock muffler is better than a stupid canister muffler?? and also i heard an airbox is better for low-end and CAI is better for high end... is that true also??
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Old Sep 26, 2002 | 07:31 PM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (armharm)

yes your standard airbox is good for low end.. if you have an auto I recommend using your standard airbox with a highflow filter (K&N). manual I would probably go the CAI. either way both are relatively good depends on your driving, if you like racing CAI is the way to go, everyday I would prefer the airbox on an auto for more low end torque.

Im not sure about your first question. basically with i/h/e I think all round you will loose a little low end. however when your racing your always up over 3,000rpm. this is where you get benefits of your fi flow airfilter, headers and exhaust
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Old Sep 27, 2002 | 12:04 AM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (piotrush)

Is it worth taking off your muffler if the cops are going to be on your *** whenever they hear you? Thats the biggest reason why I wouldn't do it. I bet the fine for that sort of thing is pretty big.
Dude I've revved on a cop, and HE asked ME to race HIM, and we did... he was kool as ****. And I just got pulled over for the first time in two years for chirping 2nd gear a couple weeks ago--He didn't say **** about my exhaust, even though he heard it clear as day and it was obvious it was missing, lol. Maybe in big cities I could see it being an issue, but around here, hell, there are Mustang Cobras who run the streets with exhaust systems ending after the headers, lol. I'm drunk, so I will stop typing now, lol
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Old Sep 27, 2002 | 07:25 AM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (typeSwarrior)

biggest bang for the buck: a well thought out turbo, some say nitrous but after a while filling up that tank you could have bought a turbo, sure its expensive but if you are looking for quick power then there you go.. power is not cheap the only thing an intake and exhaust is going to do is maybe a few hp but it makes you car "sound" fast... if you really want more power you have to shell out for things like cams and internals or boost,.. IMO
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Old Sep 27, 2002 | 07:57 AM
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Default Re: Question about claimed hp increase with CAI & exhaust muffler... (ViZ)

Yeah. I think mackymcg put its best: "ask yourself how fast do you want to spend"?

As for racing the cops, damn, you must have some cool cops where you live typeSwarrior. The only people in Stamford that could get away with **** like that are some of my friends that work at dunkin' dounuts. Lucky bastards
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