TPI vs DISPLACEMENT (4.3, 305, 350 & 383)-DOES IT WORK?

TUNE PORT INJECTION TEST-TORQUE VS HP VS DISPLACEMENT. DOES THE FACTORY GM TPI WORK BETTER ON SMALL-DISPLACEMENT MOTORS? WAS IT DESIGNED FOR THE 305 OR 350? WILL IT WORK ON A WILD, 383 COMBO? HOW CAN WE GET IT TO MAKE POWER AT HIGHER RPM? WILL A CAM HELP? WILL PORTED HEADS HELP? ALL THE ANSWERS ARE HERE-CHECK IT OUT!