Alloy undertray

[JPL]

For the S4 guys. I got a new undertray from Vagparts last year £80 or £90 IIRC. Didn't think that was too bad. On the S4 it makes a hell of a difference to the flow through the intercooler, channels air up into it instead of letting it pass underneath. Mihnea also suggested cutting louvres in the wheel arch above the intercooler to help the flow out the other side as well, as it's really got nowhere to go apart from the engine bay.

Graeme.

[PeteRR]

Nice one Graeme, I thought as much.
Another part to order soon then!

[Corey]

Mihnea also suggested cutting louvres in the wheel arch above the intercooler to help the flow out the other side as well, as it's really got nowhere to go apart from the engine bay.

Much more OE to do this, the wheel liner costs £18.43

frankenliner

use the S4tt 8D0 821 171 G, if your already missing the main undertray though is is not really required but is vital if you want good airflow through the intercooler if the undertray is present.

[PeteRR]

Now that looks like a nice little mod, I'll certainly look into doing that if I get a new tray.
Good find Corey!

[Corey]

I have one of these in stock if you're interested?

[john881000]

Alloy Undertrays

HI ALL

IN SOUTH AFRICA WHEN I WORKED WITH AUDI


IF I REMEMBER CORRECTLY SOME AUDI MODELS HAD A THICK ALLOY UNDER TRAY BOLTED TO SUBFRAME AND FRONT OF CAR.....protecting engine

SIDES OF ENGINE WHERE THE BLACK COVERS.......


FRIENDS IN SOUTH AFRICA CAN CONFIRM??????


HOPE MY 2 CENTS HELP


CHEERS
JOHN

[GT500]

Terry,
I don't know where you work but,
Having being trained by Aston Martin to make aluminium panels myself i cannot see how any one could make one in ali for under £200.
They would be alot of work. Plenty of shape to them.

Interested to see what you can sort?

all the best,

Rob

[AUDI9020V]

ali is expensive at the mo,had a word with a guy and he said mount it to the subframe.or mount to car weld nuts so it can be bolted on.