Selling my JB4 that I bought a couple months ago as I'm moving to a flash tune. Included is a O2 sensor wiring plug so you don't have tap into the cable with PosiTap - see eBay listing I purchased it from:
https://www.ebay.com/itm/255018357633?hash=item3b60475381:g:QMsAAOSwfWtgyQ44
Asking $300...