why do you need bigger injectors? Unless you plan to max out flow on your current injectors, then you don't need new injectors.
To figure out what size injectors you need, use the following calc..
Injector Size = Expected BHP (brake horsepower (at flywheel)) x BSFC (brake specific fuel consumption)/Number of injectors x duty cycle
A good BSFC for a performance
NA street engine is .45-.50 to be on the safe side, lets use .50.
Lets use 90% duty cycle..
So if you expect 220 bhp.. 220 x .50 /4x.9 = 30.5 lb/hr injectors.. round up. so 31 lb/hr
to find cc/min multiply 31 x 10.5 = 325.5 cc.. in general, if you have two injectors sizes to choose from one being 310, and one being 360cc.. always round up to the next closest size.
so.. plug in your own #'s and figure it out.
