Ignition coils do not last forever!! I have found that even when a car starts right up and seems to run fine the coil can break down under high loads such as high RPM's. Since most owner's coils are over 20 years old it is no surprise to me that replacing a coil can make the car run better even if it seems to run fine now. Just don't use an N.O.S. coil as it too would be over 20 years old, it just was sitting on a shelf. Same goes for the ignition wires, cap, rotor, and spark plugs as electric will jump at the weakest link. Sticking in a hot new coil can cause other weak areas to appear. David Teitelbaum vin 10757 --- In dmcnews@xxxx, dherv10@xxxx wrote: > Bob, Thanks for the comment on the coil. I have been trying to tell everyone > for more than a year, electrical has to be updated as well and not wait for > something to break. The new 18,000 volt coil does take a new resistor, but I > can wrap my car upto 6000 rpm's easy. I don't recommend it, but 5500 is no > problem. If you don't have a good electrical system in the car, battery and > alternator, the car can't achieve it's maximum. It will also run better. > John Hervey > www.specialTauto.com