Heatshield and GruppeM including cold air feed Development

[adsgreen]

One option would be to use an existing or add a new naca duct to the under tray and some ducting to get the air flow on the filter.
You can also add some vents in the wheel arches to help duct air out of the engine bay.
Heat wrap on the exhaust manifold (or some ceramic coating) might help keep the radiated heat down too.

Not sure how effective will be on the rs4 just really thinking out loud

[sonny]

One option would be to use an existing or add a new naca duct to the under tray and some ducting to get the air flow on the filter.
You can also add some vents in the wheel arches to help duct air out of the engine bay.
Heat wrap on the exhaust manifold (or some ceramic coating) might help keep the radiated heat down too.

Not sure how effective will be on the rs4 just really thinking out loud

The main problem is with the RS4 is lack of space. Those are option but would involve cutting into the inner body work. If it was a racer, fully stripped out etc then I would see the effort being worth while.

I did look into exhaust wrap, I was originally going to use wrap for the induction kit.

There is one more air duct, the one that is located in the wing, this is currently feeding air into the shielded area not the air filter. I was looking at building a deflector for that, but will try adding a smaller tube to direct the air in.

Remember this cooling has already cooled the intake temp down by 20c so it works, but its not good enough.

[P_G]

I wonder whether there is a way of diverting some of the a/c unit cold air into almost like a fridge where the induction air passes through to cool it? Similar in effect to dry ice but a constant?

[sonny]

I wonder whether there is a way of diverting some of the a/c unit cold air into almost like a fridge where the induction air passes through to cool it? Similar in effect to dry ice but a constant?

Now that is interesting, should imaging fuel bill will be pretty hefty lol

[P_G]

True. Could suggest Liquid Nitrogen in a canister in the boot instead of NOS sprayed into the air inlet but again fear storage and cost!

[Stoffle32]

Why not just run a water/Meth system
Have a mate that runs it on his RS4 here in SA, where our temps are much higher, his car now pulls zero timing and the intake manifold is cool to the touch after hard driving...
Its also pretty simple to set up ill see if I can get pics of the setup...

[edge]

was there not talk of somone on the forum running a water/Meth system already?

[sonny]

As im at Cadwell Park tomorrow thought it would be a good idea to clean the filter out on the GruppeM.

I had the Cold air feed added a last month. Pics show how it sits in relation to the heat shield and where the GruppeM would sit. I have put extra tape filling in the gaps between the heat shield and body work (not shown).

You can see in the other pics how dirty the filter is, now that the cold air feed has been fitted. You can see the state of my sink. This is a months worth of driving.

So guys and girls, esp those with the cold air feeds fitted, check and clean your filters on a regular basis. I know its a <beep> job, but it has to be done.

[PJC]

Your sink looked like that last time I popped over for a cuppa.

[sonny]

Your sink looked like that last time I popped over for a cuppa.

haha I was waiting for the cusses.

[PJC]

didn't have to wait too long then.

[S4Player]

Pg is on he money with his idea I think, I had iat trouble myself and added a 'killer chiller' into my cooling system it's basically a freezer that my charge coolant flows through it dripped iat's a bit

[sonny]

Pg is on he money with his idea I think, I had iat trouble myself and added a 'killer chiller' into my cooling system it's basically a freezer that my charge coolant flows through it dripped iat's a bit

But, this is injected into the inlet ports thus making the air more dense and cooler. So it by passes the MAF (Post MAF), So the ECU would not adjust timing in technically would not know.

If, It was injected Pre-MAF then I can see that it may make a difference and in theory it should.

[P_G]

That was what I was getting at, anything post MAF the ECU will not optimise because of the MAF readings it gets are not based on the cooler denser air so the air may be cooled in the manifold but the fueling pattern will not be optimised to make use of it. A pre MAF chiller, so a bit more complex that the Scooby intercooler spray idea would perhaps work best.

[sonny]

That was what I was getting at, anything post MAF the ECU will not optimise because of the MAF readings it gets are not based on the cooler denser air so the air may be cooled in the manifold but the fueling pattern will not be optimised to make use of it. A pre MAF chiller, so a bit more complex that the Scooby intercooler spray idea would perhaps work best.

I knew what you meant and think its a good idea, but costly. Hmm I will be interested to see what the power figures are in the winter on a sub zero day!