http://www.ebay.com/itm/142200387357?ul_noapp=true http://www.jetprime.it/en/products/control-unit/jetprime.html
eBay link goes to a 1979 Yamaha XS650, I have never tried one :-) The Jetprime is basically an Injector Controller similar to Dobek or EJK with a programming ability like the Bazazz. The info on the Manufacturers site is somewhat dubious, maybe somethings are lost in the translation ?? The choice of using the IAT sensor is strategic as it allows to change the ignition timing so that you can avoid any risk of causing damage to the engine should the settings be incorrect.