I installed a new eis8 ignition module and two new coil assemblies. The car was missing and bucking b/4 and now its worse when the engine is speeded up I checked each spark plug wire with a neon light and could not detect any miss . The car idles perfectly but when the throttle is increased it bucks and misses. Since the check light doesn't come on i suspect it may be faulty or dirty injectors.Could it be the fuel pressure regulator a weak fuel pump Any thoughts or suggestions are welcomed.