Selling a Mercedes Benz CLA250 Front Wheel Drive C-Tronic performance chip.  This chip has a very easy to use plug and play.  Chip has a 3 year warranty though the manufacture.  Advertised to add 50 hp, check manufacture website for full details.  Chip was purchased though authorized reseller.  Cannot say if chip is working properly or not, do not have a vehicle to test with.  Message with any questions.  Comes with all paperwork, stickers, warranty registration, etc...