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The new best of both worlds Monty inlet setup !



Here we have Kawasaki ZXR400 motorcycle drive by wire (DBW) individual throttle bodies with integeral injectors and DBW throttle motor mounted on my long runner Fusion Fabrications inlet manifold. My EMU Black ECU only starts to open the additional four throttle butterflys when the single throttle TPS reaches 75%, engine speed is over 4,500rpm, and finally when the MAP sensor indicates engine load is over 80%.

Under all but agressive driving conditions the system operates just as it always did with the sigle throttle body long runner arrangement producing the excellent low end and mid range torque I've enjoyed since fitting the Fusion Fabrications inlet, but it now also becomes a hybrid single throttle & individual throttle body setup to give maximum power at higher rpm and larger throttle openings under load.

The 3D ECU calibration ensures the four additional drive by wire buttterflys only open when all the three sensor input rules are met, the activation of the second set of injectors (staged injection) is configured in such a way as to exactly match the extra air being delivered through the ITBs ensuring best power is delivered all the way to 7,300rpm where the soft rev limiter pulls ignition timing to ensure the engine never exceeds an absolute unloaded maximum of 7,500rpm, at which point the hard fuel cut is triggered for failsafe engine protection.

Basiscally the setup operates as a dynamic variable length inlet system with staged injection, under normal driving and modest acceleration events theres no ITB or staged injection activation at all, so it's functioning exactly as it was delivering all the torque produced by the excellent long runner Fusion Fabrications inlet. However, give Monty the beans and it becomes a hybrid single throttle & individual throttle bodies setup to give maximum power at higher rpm and throttle openings when Monty's Duratec clearly benefits from more air and fuel delivered through super short runners.