Spark Plugs... How will replacing them with better ones impr

[danny67x]

I know spark plugs are what causes the engine to turn on (ignition), but can anyone post any more in depth info on them?

Say I switch to Denso Iridium Spark plugs, how would that improve anything..?

Dan

[Jay]

Idea is that bigger the initial ignition(by the plug) the bigger and more complete the explosion in the chamber, which gives more HP. Also, I believe well distributed detonation is another aspect of the aftermarket spark plugs. (Less torsion of the cylinder heads = less loss of down force)

I read about these a long time ago so I might be wrong...

[camryLI]

how about running performance spark plug wiring, what kind of hp increase are we talking about ? 1-2hp?
--LI

[Nick]

nada!! spark plugs, wires, more powerfull ignition coil will only improve performance by a very small fraction on cars with super/turbochargers or NOs

well spark plugs, stickers and altezzas improve performance on civics by 20-30%

ahahhaahahhahahhah