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Join Date: Mar 2001
Location: Seattle, WA
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New airbox lids

I have seen a couple of company's are selling airbox lids that flow so much more air, and I was wondering if they produce any more HP or responsiveness. Has anyone tried one?
Thanks,
Eric

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Old 12-03-2003, 05:41 PM
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The standard airbox intake opening isn't restrictive in an SC. I doubt it would make any difference.

The exhaust system is a different story however. Thats where you should spend your money if you want easy HP.

Either that or eRam
Old 12-03-2003, 05:47 PM
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I've already done SSI and a B& B, so I was wondering what else might work. Is the eRam for real?? I've read the old posts, but they never really say anything.
Thanks.
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Old 12-03-2003, 06:03 PM
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airbox lids

check this out!
Old 12-03-2003, 09:28 PM
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I don't know if modded-out airbox lids are any better than the stock airbox. That doesn't mean the stock airbox is asthetically pleasing, however.

On this board (like Al's above for instance), there's been some very, VERY pretty reproductions.

I know nothing about the E-Ram or whatever: it sounds too E-commerce-like for my tastes.

Hey Al: are those for real? They're very nice. More details please.
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Old 12-03-2003, 09:33 PM
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I've been working on these for some time. They are definitely for real. These are from the initial run of 25 units. Anodized sheet metal with polished aluminum side covers. Everything bolted together perfectly and fits the CIS like it was made for it. Which it was. I'm down to the nit-picky stuff like what hardware to use. Stainless socket head capscrews or black-oxide button head or stainless button head etc. You are looking at protos #1 and #2. I get #1 and Doug Zielke get's #2 for agreeng to be the beta test guy. After that they are on the market. Please PM if there is interest.

Regards,

Al
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Old 12-03-2003, 09:45 PM
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PM'ed you...
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Old 12-03-2003, 09:49 PM
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Hmmmmm....I'm supposed to be beta testing a couple of carbon fiber designs that Colin is working on here. I'll post pictures when I get them in my hands.
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Old 12-03-2003, 11:10 PM
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What is so special about the original airbox design? Whay can't the whole thing be replaced by a cone filter setup?
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Old 12-04-2003, 03:48 AM
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Anyone?
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Old 12-04-2003, 02:59 PM
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Here's how you find out if a different airbox lid helps:

Take yours off and use some sort of straps to hold the filter in place. Then go out and drive hard. if you notice a difference (besides being louder) you have your answer. Unfortunately the louder intake noise may fool you into thinking it is actually faster, but hay, if you believe it, who cares if it's real or not? If it seems faster that's all that matters (unless you are racing another car).

I haven't done this test but IMO the CIS air sensor plate and throttle body are much more resrictive than the air box lid, I'd be surprised if there is any real measureable improvement.
Old 12-04-2003, 03:19 PM
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Chris, look at the stock filter and lid. Then ask yourself if a cone filter can provide as much flow. Where would you mount it? At the end of the air box cover snorkel? What advantage would that give you? The stock air box cover and filter are not a handicap for the CIS.

The air box work we've seen have been for intake noise or art. None have shown an appreciable (if any) performance gain.
Old 12-04-2003, 03:21 PM
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Souk,
Not really looking for any performance increase. Just wondered why kits are available for every other type of induction system in place of the crappy looking stock airboxes.
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Old 12-04-2003, 03:56 PM
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Chris, the CIS airbox is the reason, I would guess. There is no reasonable way to put a cone filter on it. No matter what you do, everything behind the airbox cover is there. No good for fitting a cone. So unless you get rid of CIS and your options are limited.
Old 12-04-2003, 03:58 PM
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I guess that makes sense. Would be nice to get rid of some of the clutter in there though, including the box itself nevermind the cover.
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Last edited by Glasgow 911SC; 12-04-2003 at 04:03 PM..
Old 12-04-2003, 04:00 PM
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Maybe one day...
Old 12-04-2003, 04:06 PM
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I don't know...no wait...I do know. I really like CIS. Mine starts right up, and gosh, even I'm getting to the point where I believe I can diagnose what may be wrong with it.

Carbs just seem too bothersome, though I know some may disagree.

As for clutter, man, when I look under a new car (except for a four-cylinder), I see REAL clutter.

A nicer airbox cover will just make a CIS engine prettier. Lessen restriction? I doubt it. Porsche wouldn't have put something too restrictive on an already so-called "restricted" induction system.

Or so I believe...
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Old 12-04-2003, 04:39 PM
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In the end, the covers are pretty much just to keep the rain out. LoL...You know, my 3.0 seems top like the bigger snorkel on the later box than the longer snorkel with a smaller end from my 2.7!!!Of course I have the 78 top end that thinks it should breathe better.
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Old 12-04-2003, 04:40 PM
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Well, as the official 'Beta' tester for the Ikosmal CIS airbox cover, I will be sure to report any peformance improvements. Do I expect any? Probably not. But then on the other hand, I know Al has been working on his design for quite a while, so who knows.....
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Old 12-04-2003, 05:24 PM
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Quote:
Originally posted by Glasgow 911SC
What is so special about the original airbox design?
The original airbox design has a thick-wall construction which helps lower the sound/noise coming back up, from the intake.

The original airbox design is light weight.

The original airbox design has a right-angle diffuser section, which, again helps knock the noise level down, and does a great job of keeping rain-water out of the engine.

That's all that comes to mind.
Who knows; perhaps the original airbox design has the nozzle location to help draw air-flow over the CDI too. (?) 'those Germans' doncha know.

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Last edited by island911; 05-22-2004 at 10:28 AM..
Old 12-04-2003, 05:27 PM
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