This is a great product you can fine tune you fuel range without hooking up to a computer simple a true DIY part, very easy to install just a few minutes and it was on and ready to go! This with the pipe kit woke my bike up it runs the way it should now.
Ken from Crf promptly responded to my review about the problem with my Ejk controller, really impressed. They are helping me get the setting right for the elevation and mods for my crf. This company has great customer service and integrity. Looking forward to doing business with them again in the future.