My car still has not been shipped yet so I have not been able to check out the set up on the intercooler, but would it be possible to add a second heat exchanger and maybe a sprayer along with it?

AND... I have a question which I could answer if I had my car already, but since I dont - the question is... Is the coolant for the intercooler the same that is running through the engine. If so, then it would be picking up heat from the engine and be less efficient than if it were not routed through the engine.

If it is running through the engine I'm sure that it would be very easy to re-route or bypass the coolant from entering the engine.

 

Yes you can. Here is a post where an owner of a SLK32 did just that.

This is a little tricky to explain as there are 2 coolant systems on the car with 1 common overflow container. Both systems use their own pumps but do not directly flow into one another. What I mean by this is that the water that cools the engine won't go into the intercooler system or vice versa. The only time the intercooler could get hot engine coolant is if the radiator puked some into the overflow (shared) container. If you car is running that hot then there is either something wrong or it is hotter then heck out.

There are still people separating the systems and here is the best example of that. This works great not because of the fact that he separated the systems from the common overflow but because he added a huge amount of coolant which the system really needed, especially in cases where people run more boost. The more coolant the less chance of heat soak & quicker recovery of lower air intake temps.

 

The key to remember is if you do separate your systems completely is to make sure the new reservoir is a pressure container. It will raise the boil point and help if there is an issue.

 

Replace the heat exchanger with the largest size you can fit in front of the AC heat sync... Separate your charge air cooling system from the OEM plastic overflow tank that is shared with the engine and install a cooling plate type tank... Insulate the cooling pipes going into your charge air cooler... Install the frenolic gaskets available form the euro tuner companies...