Do I need to have my engine on to flash my ECUs? No, you only need to have your ignition on: the key should be in position 2.Some ECUs can not be saved with this flasher. In this case you have to remove the ECU from the car to flash it. Can I flash all of my ECUs? Can I backup data from all my ECUs? Some ECUs can not be flashed with this OBDII connector.You can now perform ECU flashing on your computer. Simply plug one end of this cable into your vehicle's OBD port and the other end into your computer. The advantage of this cable is that you do not have to physically replace or alter any hardware in your vehicle. Does this cable let me perform chip tuning? Technically, 'chip tuning' refers to physically replacing ECU ROM.Can I use this cable with the KWP2000 software or another software called _ that my friend recommended? Yes, it should work with KWP2000 and it may work with other PC diagnostic software, however we do not provide support or recommendations regarding software for this product.We cannot give any support or advice on how to use this product and we sell it without software. If you have questions regarding the use of this product you will need to search internet forums related to car care and maintenance. We cannot give any customer support regarding its use. As the wholesaler, we provide the package containing this car diagnostic and maintenance cable.Savings on fuel efficiency mean this cable pays for itself.Weight/dimension is for the main item of this boxed product, to help you compare product sizes before buying: please do not base your shipping calculations on this price - shipping prices depend on your cart contents, shipping destination, and shipping method: please use the checkout to select options and preview shipping price for your total order.Compatible Car Brands: BMW, Volkswagen, Mercedes, Ford, Nissan, Ferrari, Hyundai, Volvo, Mini, Izuzu, Honda, Kia, Alfa Romeo, Fiat, Lancia, Smart, Cirtoen, Peugeout, Audi, Seat, Skoda, Chrysler, Opel, Renault, Rover.

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