I run stock replacements and never had a problem yet.
you shouldnt be using thoseOriginally posted by Chico222
I used Bosch Platinum 4s. They work great for me.
Car runs like crap and eats gas. Stumbles and hesiitates alot, idles poorly, and it isn't as fast.Chelica said:How can you tell if you need to replace your spark plugs?
Originally posted by 00silverGTS6spd
you shouldnt be using those
:werd:BadTOYO said:any spark plug will work... the only reason makers tell you to use platinum or iridium on some engines, it's simply to warrant a longer service interval... of course, high power ignition systems/coils will wear out the weaker metals faster, so an iridium plug will probably last longer than a platinum one, and both of these will outlast copper...
Fewer Volts Means More Amps
DENSO Iridium spark plugs require on average 5,000 fewer volts to fire than conventional spark plugs.
Less power is required to fire DENSO Iridium Power Plugs, and coupled with our patented U-Groove technology, the use of Iridium alloy, the tapered cut, and the ultra fine 0.4mm diameter electrode translates to increased horsepower throughout the dyno range.
"It takes 5,000 volts less to fire a DENSO Iridium Power spark plug versus a conventional platinum spark plug.
-SAE Technical Paper Series
March 1-4, 1999