i bought a one owner mazda b4000 (ranger) 4x4. i have made some improvements. i installed a BBK 66mm throttle body, a K&N FIPK, an Accel coil, 8mm wires, and DynoMax cat back exhaust. my question is : what about fuel? the stock injectors run at about 22lbs. bosch. if i upgrade to a 30lb, will performance gains be noticable? im sure gas mileage will suffer a little, but my thought is: more air (done) , more fuel ( not yet) equals more h.p. right??