Feedback from Owners with Kleemann and Evosport Tunes..
#51
MBWorld Fanatic!
Join Date: Jul 2009
Location: FL
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'09 C63 AMG
Case in point...sometimes, an aftermarket open-air intake on a stock car does nothing in terms of performance gains (maybe it sounds better, but doesn't actually add any HP/TQ); however, put that same open-air intake on on an already highly modded car of the same model, and it may actually add some HP/TQ and could be a decent mod with real HP/TQ gains, especially in the upper speed ranges.