Интересное решение в сток бампер S4:
Audi S4 Intercooler Kit (FMIC): The kit is based on Garrett's 12" X 24" X 3.5" bar and plate intercooler core which we modify to a height of 9.5". We fabricate end tanks and tubes specifically for the S4. The intercooler mounts directly in front of the stock radiator and air conditioning condenser on custom brackets fitted inside a modified OEM bumper. It is completely enclosed by the bumper cover.
The installation clears the power steering cooler and engine oil cooler. Horns must be relocated to accommodate the down tube from the turbo-charger outlet hose.
The kit includes the custom intercooler, down tube from turbocharger hose, inlet tube to throttle body hose, mounting brackets and hardware, and modifications to the customer's OEM bumper.
We have OEM bumpers in stock which we will modify and ship with the kit. A $300.00 deposit is required, which will be refunded upon receipt of an OEM bumper in good condition.
$1796.72* Price does not include cost of Garrett core
Взято отсюда: http://www.pmwltd.com/products.php