Ever wonder why you have to run a pc3 between the wire harness for your injectors and why u have to tap into your stock harness for a signal wire? Basically the pc3/pc5 lies to the ecu by telling it that's its drawing too little air to richen up the fuel mixture, or its running too much air to lean out the mixture. But the preferred method is to reflash to change the restricted throttle settings by the ycct and maximize power per cylinder and per gear instead of 1 power commander map for all gears and cylinders then spend another 300$ on An ignition module to adapt your timing with your fuel. Hands down 2 bikes, same mods, 1 has pc3 . the other FlashTune . I put 1000$ on the FlashTune bike all day with same rider. Straight line or circuit track.
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2007 R1, BMC filter, NGK plugs, Stock cans with A&R baffles, Mivv Y pipe, -1F/+2R sprockets, Flash Tune interface, Zero Gravity Corsa windscreen, 35w 8000k HIDs, 520 EK chain