I have the same kit as you, the injectors are only 20cc more but make the cams work better with the 305 kit. I run a Bazazz with Auto Tune. I race at 4000 to 5000 feet and all together work great. I have a guy who builds bikes for MotoAmerica who advises me. The stock throttle body and injector restrict the mods. We also removed the top of the air box. We are porting a bit different from the norm. Check out Moto Tune USA and see what we are doing. I have been building stuff forever and have a few old timers that have dyno's and flow benches and say I am doing the right thing to get the HP out of the little bike.They did say the extra gas metered right help with top end performance.
I am excited, our track days start this month and our races start in March. We will see how it works against the all the other 300's. We have the weight advantage and I am trying to make mine lighter everywhere i can.
Are you racing yours
Thanks for the reply:
Coming up to 64 years old the racing on a track is over. Used to race production class 250 in the late 70's and early 80's. The picture of an old bike were my first. A YDS7 bottom end and g/box with the RD barrels, also ports opened to fit the carbs from a 350.
Nowadays I ride my bikes for enjoyment and thrills. Have a R3 in the w/shop with the CBR.
I like good grip with braking and acceleration. Top speed is no longer the golden grail. Both bikes have sintered pads and Pirellis fitted. The rear seat has been removed on both.
You say you are using a Bazzaz, I am using the FI Con that Takewaga sell, not as easy as the Bazzaz to fit. Agree that the BBkit transforms the bike, I had to fit uprated clutch springs to stop slip from take off. Also, have fitted 13T sprockets to both bikes.
The throttle body and injector change you have done is of interest to me. What model did you take the injector and throttle from and how open is the airbox.
Thanks again for the reply. Take care and ride safe