Originally Posted by MrChad
Correct, the Helm I own is only for the 4 banger hamster motor.
Hamsters or not, it still gets about 10 more MPG than mine does lately with a bad cat

h:
I'd like to see an actual back to back to back dyno comparing copper to iridium to platinum in a normal car. Most tech articles I've read say copper is the best for engines like ours, but some say iridiums are - who knows? It's all theory one way or the other.