Although very skeptical about buying a chip off ebay, I did so. I know that many people get knockoffs and whatnot (sometimes they work, sometimes not). I got a legit used Dinan chip from a great seller. Im surprised about the performance - The claimed 12+hp seems to be there even thru lower rpms, as well as the Dinan sticker, paperwork and also the 7k redline.
Before buying I was even skeptical as to if Dinan made a chip for the m42, but after seeing and installing it everything seems right. Is anyone else running this chip??