>You can, in fact, many newer autos do just that. Down side: extra wear on >the plugs. The other problem (more serious imho) is more wear on the HV section (coil, etc). If you're running 6000 RPM, that's 12000 sparks/minute on a 'normal' firing setup. 24000/60 = 800 sparks/second. Not many non-racing ignition systems can handle that speed AND deliver a hot spark. Andy ================================================================== Andy Kunz - Statistical Research, Inc. - Westfield, New Jersey USA ==================================================================