Hi Maybe it s à stupid question but Just wondering if a hood scoop can help for the heat under the hood or not .
Its Audirevolution so there is never a stupid question.
A hood scoop would be a very helpful add on if you can find one that works and you would have to obviously probably cut into your current hood to make it work. I dont think there are a lot of aftermarket hood options for the S6
One thing to do if you dont already have them is the intake spacers. The hotter the day and the hotter the motor temp the more heat they help get rid of. They directly impact under hood tems and are a good first step no matter what you do on top of that.
Is it the same hood from à A6 or the s6 is à différente .
Hoods should be the same between the two.
I’d be tempted to do hood vents rather than a full on hood scoop, but that’s strictly my opinion for the sake of keeping the cars subtle appearances. It would give the hot air in the engine bay a place to escape after coming through the radiator and past the engine. The air moving over the hood is moving faster creating a low pressure area naturally forcing the air in the engine bay out.
Something like this…
http://www.allfordmustangs.com/forums/attachments/2005-2010-mustang-gt-tech/73498d1246825170-custom-hood-louvers-carfx-vented-hood-2.jpg
I don’t know. I would love for the heat to go away but hood scoops to me don’t belong on an audi. And I know the engine can take some water but last thing I want is a bunch of snow, rain, leaves, extra bugs etc having the chance to get into my engine bay.
A cowel would be ok as it would give you some protection from the elements. But I think vents might be a bit of a mess. There was a B8 S4 guy that put in vents and it was a disaster. It didnt go well at all. I see more of the same here. To be honest I think you would be better off cutting holes in the intermiediet fire wall to let air flow go through there and from there it would just get pulled out by the lower windshield
There is a vented hood on eBay that doesn’t look too obnoxious
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À hood like this could be good or its Just for the look
Sorry for the link the only way I could do on my cell 
The RS6 hood seems like the best option. Im not super sure if the hood is actually functional but it seems to have the vents in the right spot and it should fit. I dont see why a RS6 hood wouldnt fit on the S6
So if I understand à good thing could be à hood vent or hood louver.
https://www.google.ca/search?q=hood+vent.corvette&client=ms-android-samsung&source=lnms&prmd=ivn&tbm=isch&sa=X&ved=0ahUKEwiij6fHobvLAhWB0h4KHYtiAGkQ_AUIBygB&biw=360&bih=640#imgrc=XtNokOHHj2hZ7M%3A
http://corvettestory.com/images/corvette-images/2014-Chevrolet-Corvette-front-airflow-2_a.jpg
This would be ideal but keep in mind that the S6 isnt an open air dam car so even if you put that same hood on the car you would have the obsticle that the positive air pressure set up isnt on your car.
A cowel is a good idea if you can have it loovered to keep out the envirement from the engine bay. A cowel hood helps because the low pressure at the windshield helps pull from the engine bay.
As we mentioned a good place to start is by reduceing the under hood temps by using things like intake spacers and heat reflective tape
It’s a very good question yanS6. Once a car heats up, then it starts holding back power. Combatting this “heat soak” is a way to get back power.
I think that a windsheild-facing cowl would help the S6 in theory, since air passing over the car’s hood and windshield would create suction flowing from the radiator through the cowl. The opening on the cowl would have to be as close to the windshield as possible, mainly to create the best suction, but also to blow over the entire top of the engine.
A front facing scoop opening probably wouldn’t do much in theory, unless you have removed the belly pan, but even then, I would imagine the impact to be minimal. Modern cars often have intercoolers for the intake air placed right under their factory hood scoops. This is not the case in your car, so instead of a factory hood scoop blowing air on an intercooler that contains the filtered intake air, you’re instead just venting heat from the engine bay by making holes in your hood.
I mention that a windshield-facing opening would help “in theory” because in my opinion, intake spacers would do an equal or better job of preventing the cylinders from heat soaking the intake manifold. The air box is plumbed to the front grill on Audis, like a “cold air intake” sucking OUTSIDE air, so even the stock Audi air intake setup is NOT sucking air from INSIDE the engine bay.
And justincredible mentioned a good idea instead of the cowl - pulling your battery, and then put a few large holes HIGH on the metal front of your battery compartment (on your intermediate firewall). That will let some heat escape from the engine bay near where your air filter pipes into the intake manifold.
If you are considering lowering the engine bay temperature a bit, and if you’re not planning for SERIOUS power upgrades, then I think intake spacers will do most of what you’re trying to achieve. You could also change your water/coolant ratio for the summer (in favor of more water / less coolant). In a nut shell, in a radiator, water = heat sink, and coolant = antifreeze plus higher boiling point. Also, I’ve never used “WaterWetter” myself, but it’s pretty notorious for making coolant more effective.
Good advice. I have tried water wettter and it worked but I never used it on an audi
is there any benefit to not running the belly pan?
I’d think it’d help airflow for engine temps (vs. negligible detriment to airflow over/under car via reduced aero - I’d be willing to make that compromise fersure)
Some belly pans actually pull air in to cool the transmission some are just for better air flow. I took mine off and didnt really notice a difference. I would think if the belly pan on the S6 dosent have a up scoop that getting rid of it would help bring a little more cool air into the mix at certian speeds
ideally getting a map of air flow like this for our stock set up would be best. i have seen cars that over heat in the summer because the under hood insulation is taken out, so putting a heat extractor on the hood could f-up flow else where
me personally if you like the look of the scoop put it on but keep from disrupting engine compartment air flow. but if you hook it right to the intake post photos!