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Posted by: Dads914 Jul 26 2006, 03:27 PM

I'm thinking of getting one of the Air Velocity Intake systems for my 74' 914 2.0. Anybody have any experience with them? Any power gains or losses? Good or bad experience? I dont see anybody talking about them. What do you guys think? [img]


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Posted by: Rand Jul 26 2006, 03:42 PM

There's been plenty of talk before.

I like this type of setup. But the actual net performance gain is minimal. I like the simplicity.

Just beware, if this thread takes off, you'll get responses ranging from "wow, that's cool, I must have it!" to "bah, it's crap and worse than stock."

Posted by: Aaron Cox Jul 26 2006, 03:44 PM

its just a piece of PVC

Posted by: Rand Jul 26 2006, 03:46 PM

Not mine. It's made of THREE pieces of PVC and a rubber adapter!!!
Home Depot special!

I'm working on a nicely-fabbed metal unit with a mandrel-bent piece though.

Posted by: Dads914 Jul 26 2006, 03:51 PM

Thanks Rand,
The simplicity thing really is what got me intrusted plus it will clean up the engine compartment. I figured I would get some nay sayers as well as some informed info and for $99 bucks may not be a bad investment.
I was also figuring that the guy who runs GT performance would chime in sometime and give up some #'s to show its benefits I believe he's a member here.
Greg

Posted by: Aaron Cox Jul 26 2006, 03:52 PM

yep, greg treadway is a member here..

Posted by: Dads914 Jul 26 2006, 03:55 PM

Come on Aaron, give a newbie a break! will that piece of PVC help or hurt?

Posted by: Rand Jul 26 2006, 03:56 PM

Just beware, some of the nay-sayers know what they're talking about!

I'm not sure I would drop money on it. I just enjoy fabbing and experimenting.

Hmm... Didn't Marty/maltesefalcon come up with something too??? If so, it would be a nice product, probably a nice mandrel-bent metal unit instead of plastic. Might have to search for it.

Posted by: Aaron Cox Jul 26 2006, 03:57 PM

looks cool functional or HP increase? only a dyno will tell....

Posted by: Dads914 Jul 26 2006, 03:57 PM

Love to see what you come up with Rand.

Posted by: Dads914 Jul 26 2006, 03:58 PM

Im going to dyno next month and if I get one I will post the #'s here.

Posted by: BarberDave Jul 26 2006, 03:59 PM

Performace gain is very minimal, if any. But looks cool,and your right about cleaning up the engine compartment. At least your not asking about a Tornado! Dave

Posted by: Aaron Cox Jul 26 2006, 03:59 PM

when and where????

dyno time is expensive, a few people might be able to get the cost down.

feel free to email/PM

Posted by: Rand Jul 26 2006, 04:00 PM

Would love to see the numbers. I doubt you'll actually see a difference on the dyno graph. Cold air helps though... If you could get the air filter away from the engine bay heat a bit.. Just don't sacrifice air filter quality.

Posted by: Dads914 Jul 26 2006, 04:03 PM

I have a guy with a dyno at his shop who is very very reasonable. I may be able to hook a few of you guys in So. Cal. up sometime.

Posted by: anthony Jul 26 2006, 04:05 PM

Personally, I think the stock djet air intake looks better. :-)

Posted by: Rand Jul 26 2006, 04:12 PM

It will simply be an elbow from the throttle body to the air filter with one tap for the oil filler vent hose.

My car has no pcv valve, no smog stuff, no aar, no decel valve, no cold start valve, etc. So in my case the simplicity factor works out.

If your car is running well with all the stock stuff in place, I honestly think you are better off leaving it alone.

Posted by: Cap'n Krusty Jul 26 2006, 04:23 PM

FAR fewer square inches of filter material, and what there is has MUCH larger pores. Those larger pores allow more and larger particles into your engine.
More/bigger dirt = more wear. You have to decide whether the increased noise level (how racy!) outweighs the increased wear (how expensive!) The Cap'n

Posted by: nebreitling Jul 26 2006, 05:16 PM

i imagine that it does make some power. colder air/less filtering can create a couple (1-3) hp. pretty easy to make yourself. be sure to put in some barbs to hook up all the misc. vacuum hoses that go to the stock Djet box.

getting a header would create more power.

Posted by: Dads914 Jul 26 2006, 05:27 PM

Thanks Cap'n, But how is this filter differnt from the K&N I already have?

Posted by: Cap'n Krusty Jul 26 2006, 05:53 PM

Equally bad, and you will have spent a hundred bux to stay the same! Might have more filter area if you're replacing a K&N panel filter, but still FAR less than the stock paper filter. Just send ME the excess money you have. That makes the most sense to me ........................... The Cap'n

Posted by: Dads914 Jul 26 2006, 07:08 PM

O.K Capt'n sounds good, Just send me your social security #, all your account #'s and maybe even your signature and it will be on the way.

Posted by: So.Cal.914 Jul 26 2006, 07:14 PM

Just from the pictures it should breathe better than the stock airbox and IMHO that

could not hurt.

Posted by: Dave_Darling Jul 26 2006, 07:42 PM

Do a search on "intake AND demick" to see some neat results of real-world testing for a genuine cold-air intake system. Plus all of this debate, hashed out yet again....

--DD

Posted by: zen motorcycle Jul 27 2006, 11:48 AM

I did just that and it took me forever to find it! it is not actually a post on this board but a link to his site. Hope he doesn't mind


http://members.rennlist.com/demick/coldair.html

Man wonder what would happen if he used smooth bore instead of that stuff??? Also looks like from his tests that a K&N doesn't do much. One opinion and it is his.

Don't shoot the messenger!

Posted by: rdauenhauer Jul 27 2006, 03:07 PM

the synopsis of all that is that if you reverse the intake snorkel
to the drivers side you WILL improve your cold air charge.
cotton or paper element.