katkiller
New member
Is There A Better Spark Plug For This Sled Yet,for More H.p. Like The Apex Plug?
Not sure if anyone has tried the other plug yet, you may want to ask over on the 4stroke side.
horkn
New member
run iridiums in it
Dynotech tested the 10 series plugs in an apex on a dyno & found no gains. They tried hot/cold/indexed...every which way but upside down. Colder plug = harder to start.
This is a sales b.s.