A4 (B7 Platform) Discussion Discussion forum for the B7 Audi A4 produced from 2005-2008.5

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Old Oct 11, 2005 | 04:22 AM
  #1  
psuaudiguy's Avatar
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Default intake

I was looking at K&N online and it looks like they only make air filters for the new audi's? does anyone know if they do have a full cold air induction system, or if any company makes them for the B7?
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Old Oct 11, 2005 | 05:47 AM
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Default Re: intake

I'm thiking a cold-air intake on a turbo is not going to make much of a difference, once the air is compressed, it is going to get hot no matter where it came from. That is why the intercoolers are there if anything, upgrade the intercoolers - though that is VERY expensive. I haven't even researched that yet!
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Old Oct 11, 2005 | 05:52 AM
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Default The lower the temp before its compressed.. The lower the temp after its compressed

Sure the overall temp is higher then an NA car but you still can use all the help you can get.
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Old Oct 11, 2005 | 06:01 AM
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Default Re: The lower the temp before its compressed.. The lower the temp after its compressed

of course... but the money you'll spend on a cold air intake IMO isn't worth the gains you probably won't feel - a larger intercooler will make a noticeable difference.
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Old Oct 11, 2005 | 06:05 AM
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Default Yes a larger intercooler will probably show some better results

But its difficult to compare when an intake is under 200 and an IC can run you over a grand.

The IC setup on the 2.0T could use some improvement. Most of the chip tuners are finding that the transverse engines in the GTIs/Jettas and A3 are making more power since they are able to run more timing then the longitudinal engines in the A4 becuase of the smaller sidemounts vs the larger front mount.

ITs all part of the big equation though. If you can lower the temps going in even if you have a larger Ic you will only make its job easier so you will get more out of your money overall.
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Old Oct 11, 2005 | 06:15 AM
  #6  
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Default Re: Yes a larger intercooler will probably show some better results

Agreed
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Old Oct 11, 2005 | 06:26 AM
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Default CAI's on Audi's typically havn't done much of anything

...other than make more noise, if that's what you're going for.
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Old Oct 11, 2005 | 08:30 AM
  #8  
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Default Re: noise

nah, im def. wanting to keep her on the quiet side, but id sacrifice a little noise for more power....but from the sounds of the responses, it seems like there is mixed results as to whether the cai will give very little results, or no results at all. probably not worth 200, but im still gonna price them and see what happens. i at least want to put a K/N air filter in there so she can breathe alittle better
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Old Oct 11, 2005 | 09:10 AM
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Default

2nd. Most "CAI" are actually hot air intakes for our cars.
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Old Oct 11, 2005 | 09:26 AM
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Default Probably because very few actuall make CAI intakes for Audis

There are a few intakes but very few actually draw from where its getting cooler air.

A little experiment on my A3 vs another one (I know not exact science but will go back now and use one car for test) showed that more timing was being pulled on my car with a cone filter in the engine bay then the stock airbox and stock filter. One could argue I was getting more air and therefore the temps were hotter causing the timing going down.. But the temp location of my filter was right over a hot radiator hose. The stock inlet on the A3 connects direct to the front of the car so cool fresh air is always being forced in.

On previous A4s all the intakes sat in the stock location but were now open to the exhaust manifold heat instead of being sealed off and fed fresh air. Done right you should be able to actually see some gains.
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