installing a chip on 2001 230 slk
I don't mean to pour a bucket of water over your purchase, but the "out of the box" chip upgrade market has no more than replaced the "bolt on performance" of the holley carburettor market in the old days, the target market is the tyre kickers whom, much of the time wind up with less than what they started with.
In any case, identify what the signal wires are. That should tell you which ones connect to the product you purchased, being instructions should be specific to which signal wires it uses to work.


