Can anybody explain the difference between a colder plug and the stock ones. I know they help prevent knock/detenation, but how?

AND does anybody know the part #, preferably NGK's seeming as they are some of the best plugs.

 

it all has to do with the size of the insulator.

 

Theoritically colder plugs, don't release as hot of a spark. This is usually necessary under extreme turbo boost, because your air is already hot enough on its own that the plug itself doesn't need to be burning so hot. So in turn you have less additional heat in the cylinder, and less chance for detonation

I never had luck finding colder plugs for a Honda, so I ended up just purchasing a set of ZEX plugs (they're meant for nitrous applications) but they are sworn to run 2 steps colder then factory plugs.

 

why not ask NGK? [click, read, GOD has spoken...]

 

There is also a champion kind thats 2 step colder

 

you can get pretty much any plug in colder heat ranges....but why the ---- would you put a Champion plug in a Honda?

 

I tried ordering, and no success

 

ordering?

 

They worked good as ---- on my civic
and theres a dude on d-series.org, running a 85 shot of zex on these same 2 step colder plugs

 

well if it works it works...guess there is no real way to tell if one is better...just like oil...