The Last Official Air Intake Thread

[on3eighteen]

Based on my research, when choosing an air intake the 2 that it comes down to are Roc Euro (http://roc-euro.com/intakes/roceuro-...6-a7-3-0t.html) & Injen. Am I missing any worth considering?

[AY6NYC]

I'm happy with the injen and it was under 200

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[on3eighteen]

Good to know...would you mind sending a pic when you get a chance? I ask b/c there are so many pics searching Google & I'm not sure if the engine is the C7 like my 2012 A6. And I cannot find the actual link to the product on Injen's site; just a bunch of listings on eBay.

[VVG]

Based on my research, when choosing an air intake the 2 that it comes down to are Roc Euro (http://roc-euro.com/intakes/roceuro-...6-a7-3-0t.html) & Injen. Am I missing any worth considering?

Yes.....stock airbox with just a higher flowing filter. An intake on this motor is just a mod for the sake of a mod. That's perfectly fine, but accept it for what it is, and don't pretend like there is a "best intake".

[RAF_S7]

[IMG][/IMG]

Injen on my A7 3.0T

Before I went all 4.0T

[AY6NYC]

Good to know...would you mind sending a pic when you get a chance? I ask b/c there are so many pics searching Google & I'm not sure if the engine is the C7 like my 2012 A6. And I cannot find the actual link to the product on Injen's site; just a bunch of listings on eBay.

it's listed as an a7 but it fits perfect, I haven't removed the air box yet. also here's a great video on it https://youtu.be/SbzqFIc6O9A


https://www.amazon.com/gp/aw/d/B00BM...?ie=UTF8&psc=1

good luck

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[SharkNardo]

Happy with my AWE intake

[tenspeed]

Another Injen intake. I got it on eBay using a "Buy It Now" of $185.

[zoomzoom!]

Is there any actual data to support that these intakes actually DO anything (other than put a small dent in wallets)?

[on3eighteen]

Wow, I didn't know you could leave the air box & just replaced the tube/pipe and air filter. Does that mean you get the best of both worlds? You prevent the hot air going in just like a heat shield tries to do, & you get the increased throttle response & probably the cool supercharger whine is more noticeable?

[on3eighteen]

[IMG][/IMG]

Injen on my A7 3.0T

Before I went all 4.0T

Your engine looks spotless! Do you clean it often and what's your cleaner of choice

[VVG]

Wow, I didn't know you could leave the air box & just replaced the tube/pipe and air filter. Does that mean you get the best of both worlds? You prevent the hot air going in just like a heat shield tries to do, & you get the increased throttle response & probably the cool supercharger whine is more noticeable?

A metal pipe will absorb more heat than a plastic one. Why anyone would want a metal intake tube is beyond me. As I said, replace the filter with a high flow variant (there are several to choose from) and call it a day. You will notice better throttle response. The stock filter is very asthmatic. Beyond this, there is no benefit to any aftermarket intake except for the eye candy factor.

[AS6]

A metal pipe will absorb more heat than a plastic one, why anyone would want a metal intake tube is beyond me. As I said, replace the filter with high flow variant (there are several to choose from) and call it a day. You will notice better throttle response. The stock filter is very asthmatic. Beyond this, there is no benefit to any aftermarket intake except for the eye candy factor.

Agreed!

[on3eighteen]

A metal pipe will absorb more heat than a plastic one, why anyone would want a metal intake tube is beyond me. As I said, replace the filter with high flow variant (there are several to choose from) and call it a day. You will notice better throttle response. The stock filter is very asthmatic. Beyond this, there is no benefit to any aftermarket intake except for the eye candy factor.

OK, you've convinced me! Can you recommend one?

[SlickMachine]

RS7 intake. Filter is larger, retains factory look and function (doesn't pull air from hot engine bay) nice whine from blower. Inexpensive. I don't understand why you would go with the ricer look on this type car but to each their own.

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[agent47]

OK, you've convinced me! Can you recommend one?

I am running K&N again now. I had the roc euro but experimenting with something now. So back to stock airbox with K&N.

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[Phoneboy]

I did the reverse. Stick air Box with k&n now roc euro


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[RAF_S7]

Your engine looks spotless! Do you clean it often and what's your cleaner of choice

No special cleaning, just as it came

[AudiA6TDI]

There are not as many performance options for the 3.0TDI as there are for the 3.0TFSI, so I just installed a K&N filter.

I experience slightly increased throttle response and the turbo whine is much more noticeable.

I'm not sure if there is an intake out there that would make a considerable difference for the TDI. In order to take advantage of the increased airflow, I would probably need to increase the turbo size, remove the DPF and apply an aggressive tune.


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[VVG]

OK, you've convinced me! Can you recommend one?

I went with K&N

[tenspeed]

A metal pipe will absorb more heat than a plastic one. Why anyone would want a metal intake tube is beyond me. As I said, replace the filter with a high flow variant (there are several to choose from) and call it a day. You will notice better throttle response. The stock filter is very asthmatic. Beyond this, there is no benefit to any aftermarket intake except for the eye candy factor.

My choice of a metal Injen intake was based on price and looks. I enjoy the whine of the supercharger. I'm not too worried about heat transfer because there isn't much unless it is in stop and go traffic and I'm rural. The stock plastic has ribs with induces turbulent flow. Turbulent flow transfers more heat to the air than the laminar flow in a smooth metal tube.

The engine is a air pump which draws the most air at higher RPMs. Unless you drive around near the red line, you're not going to see any noticeable difference with a aftermarket intake.

[on3eighteen]

I went with K&N

Is this one? http://www.knfilters.com/search/prod...px?prod=E-1983

[on3eighteen]

RS7 intake. Filter is larger, retains factory look and function (doesn't pull air from hot engine bay) nice whine from blower. Inexpensive. I don't understand why you would go with the ricer look on this type car but to each their own.

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Where did you find that online?

[SlickMachine]

Where did you find that online?

ECS tuning.

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[on3eighteen]

ECS tuning.

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I looked at ECS but couldn't find it...here's what I checked: https://www.ecstuning.com/Audi-C7_S7...Engine/Intake/

[SlickMachine]

I looked at ECS but couldn't find it...here's what I checked: https://www.ecstuning.com/Audi-C7_S7...Engine/Intake/

Here it is. It's an RS7, not S7 intake.
https://www.ecstuning.com/Audi-RS7--...ake/ES2684171/

I highly recommend this as well because it's very difficult to get the secondary air filter (crankcase breather) to snap back in place to bottom of new air box. This separates it out to its own filter.
https://www.ecstuning.com/ES2864860/

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[ntsantos]

Here's the original thread on the RS7 box mod if you're interested:

http://www.audizine.com/forum/showthread.php?t=711358



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[on3eighteen]

Here it is. It's an RS7, not S7 intake.
https://www.ecstuning.com/Audi-RS7--...ake/ES2684171/

I highly recommend this as well because it's very difficult to get the secondary air filter (crankcase breather) to snap back in place to bottom of new air box. This separates it out to its own filter.
https://www.ecstuning.com/ES2864860/

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It looks like that airbox has 2 intakes, presumably for the twin turbos in the RS7. How does that work w/ the single intake for the A6?

[GRUMPY-S4]

Before going with an RS7 intake you might as well mod your stock one.

The ECS intake looks amazing in this car... not sure why anyone would say it looks ricey.


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[ntsantos]

It looks like that airbox has 2 intakes, presumably for the twin turbos in the RS7. How does that work w/ the single intake for the A6?

Use the oem adapter from your car and throw the twin pipe adapter away.

I do have a stock airbox and k&n for sale, for anyone that wants to modify it without touching their original one.

[Ze_Nardo6]

The stock filter is very asthmatic. Beyond this, there is no benefit to any aftermarket intake except for the eye candy factor.

Do you really believe that? Are you referring to a specific platform or to all cars in general? There is an abundance of evidence out there to support the contrary. I will have a Roc Euro intake on my car within the first 6 weeks. I'll make sure to do before and after dyno runs back to back to provide some numbers.

There are plenty of dyno comparisons on the B8 S4 between stock intake and Roc Euro and there are without a doubt some impressive gains (12-20awhp). That is a great leap for just an intake.

[SlickMachine]

Do you really believe that? Are you referring to a specific platform or to all cars in general? There is an abundance of evidence out there to support the contrary. I will have a Roc Euro intake on my car within the first 6 weeks. I'll make sure to do before and after dyno runs back to back to provide some numbers.

There are plenty of dyno comparisons on the B8 S4 between stock intake and Roc Euro and there are without a doubt some impressive gains (12-20awhp). That is a great leap for just an intake.

Those intakes work great on the dyno when the car is not moving. On the move, not so much.
As for filtration, Google 'automotive air filter bench test' and you'll see how much k&N and similar filters do not flow and the increased amount of sh1t they let into your engine.

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[SpectreGadget]

RS7 intake. Filter is larger, retains factory look and function (doesn't pull air from hot engine bay) nice whine from blower. Inexpensive. I don't understand why you would go with the ricer look on this type car but to each their own.

Is the gold foil functional, insulating against heat, or just for looks?

[SlickMachine]

Is the gold foil functional, insulating against heat, or just for looks?

It's reflect a gold heat tape. I'm stage 2 and am having charge temp issues.. it's an attempt to reduce intake charge temp. I notice heat soak is delayed quite a bit. Using an IR thermo ten minutes after normal driving I was getting temps on the intake components up to 160 on hot days here. Now temps are more like 140. How much that actually helps intake temps I don't know but it can't hurt.

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[Ze_Nardo6]

Those intakes work great on the dyno when the car is not moving. On the move, not so much.

That statement seems counter-intuitive to me as well. You have a much freer flowing intake system that performs worse when more air is introduced? How?

[SlickMachine]

That statement seems counter-intuitive to me as well. You have a much freer flowing intake system that performs worse when more air is introduced? How?

On dyno, more air flows on a cone and tube, i agree. When the bay becomes heat soaked, not so much because you are obviously pulling that air. When you're moving the car through the air, you lose all the dynamic pressure in that intake that the closed-box stock system gave you via the inlet just above the radiator. This would be a good reason to go with AWE or similar setup that retains the closed box.

Try blowing air into a glass of water using a straw. Now poke a bunch of holes into that straw and try again...

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[Ze_Nardo6]

On dyno, more air flows on a cone and tube, i agree. When the bay becomes heat soaked, not so much because you are obviously pulling that air. When you're moving the car through the air, you lose all the dynamic pressure in that intake that the closed-box stock system gave you via the inlet just above the radiator. This would be a good reason to go with AWE or similar setup that retains the closed box.

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Interesting perspective. Never heard an argument for closed box for better performance in real world conditions

[SlickMachine]

Interesting perspective. Never heard an argument for closed box for better performance in real world conditions

There is no reasonable way to grab data on it because the car has to be moving. AWE would be an example of a company who shares that perspective, as would APR.

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[SpectreGadget]

It's reflect a gold heat tape. I'm stage 2 and am having charge temp issues.. it's an attempt to reduce intake charge temp. I notice heat soak is delayed quite a bit. Using an IR thermo ten minutes after normal driving I was getting temps on the intake components up to 160 on hot days here. Now temps are more like 140. How much that actually helps intake temps I don't know but it can't hurt.

Thanks, that makes sense. Hope it ends up helping. I wonder if more of a shield would help. I have no experience in this area, so just thinking out loud.

[SlickMachine]

Thanks, that makes sense. HOpe it ends up helping. I wonder if more of a shield would help. I have no experience in this area, so just thinking out loud.

Honestly, I'm pretty sure that phenolic plastic the air box is made of does a better job of rejecting heat than metal, unless it's double walled with an air gap in between. Not much room in there for anything..
The real problem is intercooler capacity, but that's for another thread.

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