Originally Posted by eunospeed
Surely someone in the SLK world has proven this thing one way or the other. I bought a Saturn several years ago and the guy who owned it before me had installed am AEM CAI. I've read these things give a proven 9 hp gain even on a lowly 1.9 liter 124 hp motor. Also, a bud of mine with an '05 S2K says the AEM CAI is a proven setup on his car as well. I don't believe they make them for our cars but from looking at it the concept should be easy to copy.
a member built a intake like that already ... total cost was under $150 for parts...
this type of intake works great on typical OEM design but the one on the crossfire is very well done actually... one 90 degree bend upward from the throttle, one 90 degree bend towards the front of the car and swoosh directly into the air boxes then out to fresh air...
if you can reduce the number of bends or at least make the radius of the bend more gradual there is power to be gained there...
add a venturi tube for a filter and there is more power to be gained there...
definitely anyone looking to make a metal tube intake can make a very very nice unit for this car with no problems... if there are gains to be seen is another story ... really need to beat the OEM setup in terms of air temps, velocity, and flow...