Originally Posted by AMGLover
Welcome to the club - may I suggest some seat of the pants time + research before you tinker, you will find that there is little 'random' stuff that will improve performance.
On the K&N remember that the AMG 112.E32 does NOT have an air bypass when the SC is not engaged. Trust that the performance issues are not with the mill getting enough air. Save your money for 1) ECU re-program 2) pulley.
I've been curious about how the engine gets it's air when the supercharger is not engaged, can you expand on your statement? I'm not much of a K&N fan, but since my SRT6 will not be in any dirty environments I put them in my car after installing the Renntech kit thinking I need to give her all the air that I can and also figured it would probably give me a few more pony's.