RS7 intake for S6

[markreed]

I have searched and found a thread or two about this idea. I have not found any real concrete data backing it is an improvement, but would like to know if anyone has done the swap with any reportable results?

Seems like many vendors are offering the RS7 intake along with the RS7 turbo upgrade for the S6.

So does anyone have input to this?

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[sciblades]

You will need silicone hoses to connect the two but other than that it is plug and play

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[markreed]

Is there any benefit or design difference between the two...other than the holes in the rs7 top

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[dannybear]

I have done it. The engine sound is a little more pronounced. The filter is larger. The inlet pipes are larger diameter (hence why you need silicon hoses to adapt back to the steel pupe diameters). I am told you can also upgrade the metal pipes upto the turbos for increased air flow as its simply bolt on. However the price of the 2 metal rs6 pipes are expensive unless you know a good cheap source?

[VVG]

I have searched and found a thread or two about this idea. I have not found any real concrete data backing it is an improvement, but would like to know if anyone has done the swap with any reportable results?

Seems like many vendors are offering the RS7 intake along with the RS7 turbo upgrade for the S6.

So does anyone have input to this?


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Whether or not this, or any other intake, which improves airflow to the turbo will lead to an increase in power all depends on the specifics of the tune. If the tune is such that the wastegates will open once a certain manifold pressure is reached, then the intake will be of no benefit in terms of peak power. If the extra airflow is used to allow higher boost and a resultant higher manifold pressure, then it will make a difference. In any case, better airflow to the turbo is still beneficial. Firstly, it allows specified pressure to be reached with less mechanical strain on the turbo, and secondly, it will allow your specified pressure to be reached slightly more quickly. The latter may allow you to reach peak power at a slightly lower rpm (hence an advertised power gain at a given rpm, although no difference in peak output)

Of course, this is the theory. How it all plays out in the real world may be different. Maybe some of the tuners can shed some light ????

[Clipse3GT]

So what are the exact parts needed to do the S6 to RS 7 Intake Conversion?



Do you need just Part #1 (Air box, Filter, Assembly Grommet) and Part #4 (Intake Hose)???

Or

Do you still need Part #5 x2 (Intake Hose)??? Or do you need to get straight silicon hose 4 ply hose with clamps from an aftermarket company to connect the intake properly?

[MadAboutCars]

From reading other threads, it would seem that any changes to the air intake can take a considerable time before the ECU adapts and the full benefits can be felt. I wonder if APR saw no difference because of this.

I understand, and I've done it myself, resetting the 01 Engine DTC's (even if no errors are shown) clears the engine adaptations and gives a more instant benefit, as the ECU makes some more immediate decisions as to what the adaptations should be (both for fuel and air).

[Clipse3GT]

Got it. Thank you everyone for the detailed response. I appreciate all the information and insight. So basically. Once said and done a proper RS7 conversion cost $800 to $900. The metal charge inlet pipes are a must to gain full benefit for the S6.

[Clipse3GT]

Understood, thank you for the clarification. Makes sense overall.

On a side note, are the turbocharged Mitsu heavy industries or Borg Warner units? Ball bearing or journal bearing?

[eurodaddy]

Here are a few pics of my RS7 air box install. Definitely more intake sound now. Installed a K&N RS7 air filter. I'm running GIAC stage one and I can tell a slight noticeable increase. For under $400.00 it is a nice OEM touch to the S6. The inlets on the RS7 intake are 2.5" each as where the S6 are 2.25" each. So there is a slight difference. That's where the silicone couplers come into play. I sourced out ones that were 5" in length and 2.5" reduced to 2.25". Over all I am very pleased with the looks and sound.



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[Thisisnoise]

So what are the full part numbers needed to do this (including the larger 2.5 inlets ) ?

Nm read post above have the answer

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[MadAboutCars]

Nice job, eurodaddy. Can you please provide a part number or link for the Aeroflow silicone reducer/coupler. Thanks.

Also, thanks for the part numbers, Vol 4.0T.

[eurodaddy]

Thanks Vol 4.0T! Here are the part number for the couplers. Also the website address. As for the actual RS7 intake I got it from ECS Tuning. It comes with everything needed in there kit including the air filter. I got it when it was on sale for like $369.00 about a month ago.



Home of Aeroflow Performance USA, US Distributor of Aeroflow Performance ...
aeroflowperformance.us


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[eurodaddy]

Also here is the part number for the RS7 intake from ECS. It was a little less than I thought!



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[eurodaddy]

Lol! Thanks MadAboutCars!


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[MadAboutCars]

Thanks a lot, guys.

Vol 4.0T, I can't find the RS7 airbox on Europrices site. Do you have a link?

[MadAboutCars]

It's not on there. You just gotta PM or email him.

Ah, ok. Thanks!

[[email protected]]

The RS7 airbox or any of the intake parts or separate items from the turbo package are available.

Just PM or email over with your requests: [email protected]

Cheers,

[Clipse3GT]

Anyone know the RS7 Inlet pipe diameter compared to the S6/S7 diameter inlet pipe? Also the charge inlet diameter on the S6/S7 turbo's?

[dannybear]

I have the RS6 air box on my S6. My dealer advised that both the RS6 and S6 share the same part number for the gasket to the turbo's so there should be a good chance you can run the full RS6 filter, pipes, box etc all the way up to the turbos rather than reduce from 2.5inch to 2.25inch with the silicon pipes.

[Clipse3GT]

Well exactly my point. What is the turbo inlet size? If the S6 has 2.25 in inlet then the gains from a RS7 setup might be less than if it is 2.5 in and part of it is blocked off by a smaller inlet pipe and upgrading to a larger inlet pipe will free up the system.

However I would doubt they would do it that way.... but there is always a chance.

[Clipse3GT]

Like I said before more than likely it is... however the flange size might be the same at the end of the inlet pipe to the turbo but the overall diameter might be reduced to 2.25" So you have 0.25" that is being blocked by a large flange possibly. I am saying that probably both turbo's are 2.5" compressor inlet size. Then the inlet pipe and flange might be a reduction in S6 causing 0.25" to be blocked by the flange mated to a 2.25" diameter tube vs a direct 2.5" tube on the RS.

Easy to find out just need to remove an inlet pipe. My car is still at port currently so I can't check myself if that's the case.

[Clipse3GT]

Here is the RS7 turbo inlet pictures I found. Looks 2.5" for sure. Now just need to find some S7/S6 pics.





These upgraded one look fun... notice there is no step on the compressor side and there is a enlarge compressor turbine :D




Found it...



Left RS 7 vs. Right S6/S7 ... both use the same compressor housing looking at the stamp... therefore they should be both 2.5" and changing the inlet size on the intake should increase some power I would assume.

[Clipse3GT]

So looking at the compressor side of the inlet pipe they both look like they have to be 2.5" however the S6/S7 pipe is reduced on the other side to 2.25" or the entire length is necked down then mated to the 2.5" flange at the turbo I would assume.

[Clipse3GT]

Is it just me or do both pipes look like they neck down at the compressor side?

Too difficult to tell might be just an optical illusion based on the lens, angle, and distance used to take the picture.

I am just not sure if the S6/S7 version uses are thicker flange with a smaller ID at throughout. Impossible to tell a 0.25" difference from these pics. Granted if it were true then you gain 0.5" total which will be significant to some extent.

[playwithonehand]

My rs7 turbo with inlet pipe

[playwithonehand]

btw my reliable source said
the RS7 features 2mm larger diameter turbo inlet pipes, like 57mm vs 55mm

yup mine is used cant afford new one lol, down under Sydney Australia had the turbo since Christmas finally APR release the downpipe.

I love the sound of my current catless downpipe but wife is complaining about the toxic smell so i need a gesi cat.

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[Clipse3GT]

btw my reliable source said
the RS7 features 2mm larger diameter turbo inlet pipes, like 57mm vs 55mm

yup mine is used cant afford new one lol, down under Sydney Australia had the turbo since Christmas finally APR release the downpipe.

I love the sound of my current catless downpipe but wife is complaining about the toxic smell so i need a gesi cat.

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Would you be able to measure the internal diameter of the of both sides of the RS7 inlet pipe? Just curious if it is one continuous diameter or if does neck down.

[MadAboutCars]

Can anyone tell me how easy [or hard] it is to change the inlet pipes on the S6, while the turbos are fitted?

[playwithonehand]

Would you be able to measure the internal diameter of the of both sides of the RS7 inlet pipe? Just curious if it is one continuous diameter or if does neck down.

apology for delay, timezone difference.
seems like 60mm haha



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[hubris]

Seems like a very marginal difference?

[Clipse3GT]

In the pictures above, playwithonehand is measuring both ends of the RS6/7 pipes (one end in each pic); he's not measuring one RS6/7 pipe and one S6/7 pipe. So unless we have a measurement of the stock pipes, we don't really know how big a difference it is, right?

Correct, we need to see if someone can post the OEM S6/S7 inlet pipes so we can compare.

- - - Updated - - -

Thank you for the pics and your time to take them playwithonehand!

[Clipse3GT]

So we are going from a 60mm od to ~55-56mm id then reducing to ~45mm id at the compressor side.

I forsee that the S6/S7 inlet pipes will have the same 45mm reduction at the compressor.

Question now is what is the inlet size at the air intake, how much less is the diameter? If anyone has a minute just measuring the OD of one of the inlet pipes at the intake side and subtract ~4mm should gives us the rough estimate what the ID will be. Just a quick measurement with a digital caliper should do the trick.

[fatboydelights]

Here are a few pics of my RS7 air box install. Definitely more intake sound now. Installed a K&N RS7 air filter. I'm running GIAC stage one and I can tell a slight noticeable increase. For under $400.00 it is a nice OEM touch to the S6. The inlets on the RS7 intake are 2.5" each as where the S6 are 2.25" each. So there is a slight difference. That's where the silicone couplers come into play. I sourced out ones that were 5" in length and 2.5" reduced to 2.25". Over all I am very pleased with the looks and sound.



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How loud is the intake sound? Do you hear the diverter valve/"blow off valve" sound? Any performance gains with changing just the box?
Thanks.

[jsmonet]

fwiw, it looks like the air box from ECS is even cheaper now:
https://www.ecstuning.com/Search/Sit...6af/ES2684171/
Down to 287.72

[eurodaddy]

As for noise. Yes you can here the turbos spool when I'm in lower gears going below say 50mph. Any faster than that I can't here nothing but wind noise. It does seem to be a little more responsive than the stock air box. I have no data to support that. Only my senses. The inlet tubes on the RS7 air box are larger diameter than the stock box plus the opening on the top of the box. I am sure it does provide some advantage over the stock box. I just installed a RocEuro so this set up is for sale if anyone is interested PM me.


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[ntsantos]

How loud is the intake sound? Do you hear the diverter valve/"blow off valve" sound? Any performance gains with changing just the box?
Thanks.

FWIW Revo sells this same setup and advertises a 21 whp gain:

https://www.revotechnik.com/product-...m&engineid=206

[MadAboutCars]

Interesting, because eurodaddy found the silicone couplers to be too rigid and ended up replacing them with the stock RS7 couplers and adapted it to the smaller metal pipes.

[Brooklyn]

PM me with how much you want for it shipped.

As for noise. Yes you can here the turbos spool when I'm in lower gears going below say 50mph. Any faster than that I can't here nothing but wind noise. It does seem to be a little more responsive than the stock air box. I have no data to support that. Only my senses. The inlet tubes on the RS7 air box are larger diameter than the stock box plus the opening on the top of the box. I am sure it does provide some advantage over the stock box. I just installed a RocEuro so this set up is for sale if anyone is interested PM me.


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[gk1]

Interesting, because eurodaddy found the silicone couplers to be too rigid and ended up replacing them with the stock RS7 couplers and adapted it to the smaller metal pipes.

Can you elaborate?
Where the silicone hoses not allowing enough engine movement?
Was there any problems caused by this?
Thanks