Purchased a 94 GT with a 70mm throttle body, inner fender cold air intake and full Magnaflow exhaust system. Have done a full tune up including new ignition module, msd cap, coil, wires and plugs. Normally runs great but sometimes has a bit of rough idle and even once in a while idles so low it cuts off but always starts right back up.Wondering if I need to upgrade the original 19# injectors for 24’s? Does also have 3:73 gears and a mild shift kit. Any help appreciated!!