gk1

I'm curious as well since I believe the heat exchanger for the S6 is basically the same as the A6 and I would figure it has to deal with more heat from two snails vs. the supercharger. I have the same thought as you, "if they could have made it larger/better why didn't they?" Maybe to share the part across all three 2.0T, 3.0T, 4.0T?

snagitseven

A common part to save a few bucks if the difference in performance is as suggested, wouldn't make sense. I can see it if, for example, the door locks or HVAC components were standardized, but not this. Heck, Audi offers a multitude of wheel designs for all the different C7 models. I'm no wninge expert like some, but I'm a bit skeptical about the supposed benefits of a larger intercooler.

IknowHuhA6

https://store.goapr.com/products/CPS...ll-System.html

https://www.ecstuning.com/ES2862988/

DB22

This intercooler is rated at 450 crank HP and measures 25.25"x8"x3". End tank to end tank is 35.5".

Anybody that publishes this misleading BS shouldn't be given the time of day. It implies that a 1.8T VW will get 425HP. I know it's an implication and not a statement but reducing the temp to increase the density of the cold air is advantageous but not by much over the stock intercooler. You could remove the intercooler altogether and only drop less than 20HP.

IknowHuhA6

That's a great point. I hadn't realized how misleading that can be to others not familiar with engine dynamics. Plus that is an air-to-air intercooler on the ECS site link that is intended for Turbo cars, and NOT supercharged cars. I guess I really shouldn't have posted that but I think there are 2.0 turbo A6's now aren't there?

A 1.8 car producing 450 crank HP?? WOW!
They forgot to mention the need to beef up all the internals and pair up larger turbos with a Nos Kit to get up there. Plus that's obviously engine (crankshaft) HP not wheel HP given cars lose anywhere from 15%-25% HP though drive train power transfer.

Trekie

I think that ECS means that that intercooler will support up to a 450HP engine and not that if you buy and install your engine will "make 450HP". That is how I understood it.

IknowHuhA6

That's also a great point!
Keep in mind everyone that this is specifically why I titled this thread an "EXPERIMENT". Results to follow.

snagitseven

That's how I read it too. After all, ECS couldn't possibly know what the stock HP would be before installing it nor would they make ridiculous claims or false advertising. ECS is a proven, reliable company and over the many years our members have been doing business with them, I've not seen complaints.

engleg

This might help you to better understand the cooling system on the 3.0 V6 TFSI. (Pg32)

http://www.s4-mtm.com/images/925803_3.0V6TFSIengine.pdf

IknowHuhA6

That's very interesting. I've now seen MANY graphics showing a full size intercooler radiator much larger than the smaller unit installed on my 2012 A6.
Wondering if the 2012 came with smaller intercooler radiator while later years were upgraded to larger unit? Makes sense if the 2012 is the first version of the C7.

Got some homework to do it seems.