The Bazzaz is a plug and play unit that piggy-backs onto the stock ECU. Each unit comes with an application specific harness that utilizes OEM connectors for simple installation, and comes pre-programmed for either the stock exhaust or a slip-on.  The Bazzaz will control both sets of injectors (ALL 8) on dual injector bikes such as the 05-08 GSXR 1000.  The Bazzaz offers gear dependant fuel trimming allowing the operator to fine tune the engine in each gear independantly.