To 'U' or not to 'U'?

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A good friend of mine (extremely knowledgeable with cars and intake aeros) told me that having a 'U' bent in the intake like above is horrible. He said this is the WORST possible way to bend intake, and will provide horrible flow.

I want to know what everyone else thinks, because I like this set up a lot and want to do it. To bend a 'U' or not?!!!?

Also, where can you get a 'U' bent tube like the one above? This is the cleanest I've seen and would really like one. Thanks a lot everyone!

[B6driver]

you could do it a little cleaner if you change the U into an S and slap the filter down near your fog light... much like how the other intake companyies do it. with the setup you have above, you might aswell just take out the U. it does nothing but take up engine space

[chadb2434]

Mine looks like that...kinda, don't know about the air flow question..

http://www.maxspeed-motorsports.com/audia4intake.html

http://cgi.ebay.com/ebaymotors/02-05...9970QQtcZphoto

[Cipherex]

yep, i got the same intake too.

where did you find the strut support bar? thats nice.

[AudiA4Turbo22]

what the heck is that bar in the back? is that a cross member? i want that haha

[B6480Avant]

i think thats an old evoms CAI. audiFUEGO is selling his w/filter contact him he might hook you up

[[email protected]]

Hey threadjackers....is that 'U' bad to have or what? I've heard it is, but want to know from those with experience.

BTW: That is not my car, just a pic i found.

[AudiA4Turbo22]

^^i've seen it it's not bad it's fine it really doesn't matter it will still flow the same 1lb of air less per minute really wont effect performance

[[email protected]]

I c...i just heard that it can be extremely restrictive, although I think it cannot be too bad...we are only talking about a foot of pipe.

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Anyone know where the pipe in the OP came from? Where to get one?

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Last question...what did the person in that pic do with the little 'breather' hose that comes off the stock intake box? I've seen some people use a little 'breather' filter, but the pic in the OP doesn't show anything. What do you all think?

[chadb2434]

look at my edited post up there^^

[Jibberific]

Last question...what did the person in that pic do with the little 'breather' hose that comes off the stock intake box? I've seen some people use a little 'breather' filter, but the pic in the OP doesn't show anything. What do you all think?

i'm pretty sure that picture is of a B5 with no SAI

[michgo]

^^ That engine bay looks b5 ish. Our intakes are placed a little differently.

[n7plus1]

yes, that is a b5. Honestly, the U will not flow as well as a straight through design...its common sense. Not sure how much less effective teh U is though.

[akaEsCo01]

You're friend is right, a U bend sucks. When making piping you prefer as straight as possible, a right angle bend is usually steered away from and a U is even worse.

[Jibberific]

a U can't be as bad as all the curves and corners in the stock airbox though, can it?

[Cipherex]

I have that exact one on my b6, it works fine. I couldnt tell a difference over stock air box, except for the noise. But of course, all I've read on this forum is an intake doesnt help our cars anyways. But i do like the more aggressive sound.

[akaEsCo01]

a U can't be as bad as all the curves and corners in the stock airbox though, can it?

The goal is as close to straight as possible, the harder the turn, the worse off you are. you can have a 2 small bends at very low angles and be better off than a 90 degree bend

[PCYC]

who cares... its an air filter, Just KnN the stock air box

[G Men 08]

ohh cmon pcyc it looks cool!! lol. +1 on the straighter the better

[A4 KiDD 810]

is that a front sway bar?

[[email protected]]

is that a front sway bar?

Nope.

[yoogene83]

my boosted tech CAI gave me better throttle response and a nice throaty sound when i put it in. Probably doesn't give me any bump in horsepower but it sounds sweet.

Either way, if you want to eliminate the U, get a mushroom filter and stick it straight to your turbo. otherwise, just stick with the stock configuration, it's good enough for stock and to maintain smooth driveability.

[JumboBlack1.8]

On a K03.....it shouldn't really matter much either way