Hi there. I'm posting here to find out how much a Dragon Performance Digital Diesel Enhancement box?/chip? would be worth. It's a black box with a dragon sticker on it and three connectors, one male one female and one fused power wire. I've looked everywhere online and can't find any information on this model or brand. Could anyone help me out? I have pictures of it but I'm not sure how to upload them here. Thanks in advance.