Trading in, going back to stock, should one leave mods?

Going to trade the 335i, removed the meth kit today, but should I leave the DP's (catted) and FMIC? I am really not feeling like removing them myself and guess the cost of having this done is the same as I might get selling them.

Or am I wrong? What is the "market" value for a set of CP-E catted DP's and a CP-E FMIC?

Going to miss the N54 though I am seriously worried that the next car will be slow in comparison...