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  TOV News > TOV Video Interview with Comptech at 2002 IAS > > Re: short ram?

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RyanDL
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Headers [View News Item]    (Score: 1, Normal) 05-06-2002 12:41
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Wow, those CL/TL-S headers make mucho power!

Not too impressed with the gains on the RSX headers (5-6 WHP). I think DC Sports is reporting a bit more from their to-be-released headers. Over on ClubRSX, I've seen that DC is reporting either 7-9 WHP or 16 WHP (the 7-9 sounds more believeable).

Ryan

Pierce
Profile for Pierce
Re: Headers [View News Item]    (Score: 1, Normal) 05-06-2002 15:35
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I agree with the Comptech RSX headers. Nothing spectacular at all.

I believe that the 16 WHP from DC was based on their intake/header/exhaust combo, not just the headers. Either way, that is a pretty good number for just I/H/E on a Honda 4 cylinder (when compared to others, like the B16)

RyanDL
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Re: Headers [View News Item]    (Score: 1, Normal) 05-06-2002 16:17
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That makes more sense on the DC numbers. Personally, the best combo is the following (and I'll do it once I have some money!):

AEM CAI (~12 WHP)
Borla Catback (~6-8 WHP -- probably a bit more HP to be had here, but the Borla is only marginally louder than stock)
DC Sports Header (~7-9 WHP)

Total gain: guessing ~20-25 WHP (I don't know that they will sum to ~29 WHP, although that'd be nice!)

Now if Toda will just release their new cams... =-)

Ryan

jfunk
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Re: Headers [View News Item]    (Score: 1, Normal) 05-06-2002 17:56
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Excellent selection of equipment Ryan, I am considering some of the very same pieces/manufacturers, that is if I get the RSX-s first! (Currently '97 Prelude SH owner)

I still want to wait and see what the '03 Accord coupe will offer- perhaps more Hp and torque in its stock form.

What other mods are you considering?

I would probably stick with DC Sports and get their assortment of braces: Strut tower, rear-lower tie, rear tower. Interior: Type-R or Momo pedals, and the type-R shift knob, and that's about it.

Hey I guy can dream right?!




dodole
Profile for dodole
Re: Headers [View News Item]    (Score: 1, Normal) 05-06-2002 23:31
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Hey same here now owning 93Prelude VTEC waiting for the next Accord if wat they is true about the 6 spd Accord oh yeah gonna get me one.
9000RPM
Profile for 9000RPM
Re: Headers [View News Item]    (Score: 1, Normal) 05-07-2002 02:22
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If I remember correctly Comptech gain 17whp from CL/TL Type S by changing header and exhaust.
9000RPM
Profile for 9000RPM
Re: Headers [View News Item]    (Score: 1, Normal) 05-07-2002 02:26
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The numbers are a bit optimistic. AEM numbers are bloated in my mind. My friend has it on his Type S and he very disappointed after he tested the product. Personally I don't trust a lot of the manufacture's claim. It's really hard to gain much power from exhaust with small displacement engines unless you are running no cat.
bradmathisen
Profile for bradmathisen
Re: Headers [View News Item]    (Score: 1, Normal) 05-07-2002 07:19
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Actually, it is 32 WHP from the header/exhaust for the CL/TL Type S. The exhaust system is not even a cat back, it is simply a rear section replacement. Here are the dyno numbers from Comptech.
http://www.comptechusa.com/images/dyno/2000CLSplot.pdf

RyanDL
Profile for RyanDL
Re: AEM [View News Item]    (Score: 1, Normal) 05-07-2002 09:47
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I've seen a few different dyno plots on the AEM CAI. I'm not sure whether differences in gains are a function of atmospheric conditions, dyno test procedures, or some other variable. However, when AEM had their dyno day and invited Injen, I read the test procedure and saw the results. The test procedure is correct and the results speak volumes. So, take it for what its worth, I guess.

Regardless, in theory, the AEM should make the most gains (cold air intake vs. the rest being short rams). Plus, they make high quality pieces.

Ryan

RyanDL
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Re: Headers [View News Item]    (Score: 1, Normal) 05-07-2002 09:51
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Not sure what else is on my wish list yet, jfunk. The DC5 platform is still very new, so I'm waiting for a little research to be made on the chassis to see what works with suspension and what doesn't. Bolt-ons are comparatively easy to do R&D with: all you need is a dyno and the ability to use it for trial and error with different parts. Suspension is more of a gray area: not every manufacturer has access to unlimited track time.

Koni has some shocks in R&D. There are some coilover kits available, too. As for braces, I'd consider the new Comptech front strut tower, and Mugen has some nice stuff, too. The RSX has a stock rear lower tie bar, so no need to add a new one. If you get a rear sway, the nice ones have a new tie included.

Ryan

9000RPM
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Re: Headers [View News Item]    (Score: 1, Normal) 05-07-2002 16:22
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All the gain right before redline. The powerband is very similar to stock except the last 1000 rpm.
jfunk
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short ram? [View News Item]    (Score: 1, Normal) 05-07-2002 17:23
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Are there any actual benefits to a short ram other than that it "sounds cool"- particularly when VTEC'ing? It seems to me that it has little to no advantage drawing up hot/warm air near the center of the engine, and if that is the case why not just get a K&N drop in filter- at least it is shielded from the heat somewhat in the stock box? I guess from a few dyno's I've seen (independent/non-manufacturer tests) the short rams don't do much better than stock, if not worse, losing Hp and torque in various parts of the power band. Of course a CAI is a different story.
bradmathisen
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Re: Headers [View News Item]    (Score: 1, Normal) 05-07-2002 23:23
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Show me any mod to a Honda that is not a SC or TC that adds 30+ HP in the middle of the power band. The Comptech GSR with intake and exhaust only adds 5-6 throughout the power band and peaks at 8. Being that the Type S header alone adds that much power at peak, it shows how restrictive the stock exhaust manifold is for high RPM. My CL Type S is stock and pulls hard all of the way to rev limiter, I couldn't imagine an extra 30 WHP in that last 1000 RPM.
9000RPM
Profile for 9000RPM
Re: Headers [View News Item]    (Score: 1, Normal) 05-08-2002 06:16
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It's nearly impossible to add mid range power in small displacment car without F/I. 1000 RPM is a small range of the powerband to really enjoy it. You are almost shifting before you felt anything.
RyanDL
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Re: short ram? [View News Item]    (Score: 1, Normal) 05-09-2002 09:48
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You can pick up a few HP with a short ram, but generally, they don't do too well. They suck up hot air and also don't have very good resonance tuning due to their short size. Also, I think they sound quite annoying. Even the CAIs are loud when in the upper RPM ranges.

Ryan


 
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