Quote: Originally Posted by
H22-T 
i would like to know also. the video they have on their website makes it seem like it wouldn't be safe for f/i cars. just look how big the spark is.
bigger spark would be better....more complete and efficient combustion....you want the biggest spark as possible without getting spark blowout....they even have a disclaimer for you to order colder step plugs with supercharger/turbo
CAUTION: Pulstar model recommendations are for stock, unmodified engines. If you have added an aftermarket turbocharger, supercharger, nitrous or any other product that increases displacement or compression to your engine you will require a colder heat range pulse plug in order to avoid possible damage to your engine. For these applications please see our other great product at
DirectHits or call us at 888-800-6700.
