Bonneville America Forums Forums Technical Forums Performance Mods Nology Spark Silver Spark Plugs

Is a "hi po" plug really about adding horsepower or is it about burning fuel more efficiently and utilizing the stronger spark for a smoother idle and better response!?!?!?!

For me its the latter. Ive done similar upgrades with cars and have seen/felt a difference. Thats what prompted the latest upgrade.

Soren. I cant say how much of a diff the plugs made as I added the coils and wires at the same time...I do feel a slightly better throttle response and easier revs. Im happy. Its what I expected.

I opted for the Nology plugs over the Iridium for the silver in the Nology plugs....its simply a better conductor. Im curious how fast they will wear out tho. They should wear much faster than the Iridiums.