Chips, Octane and ........... Plugs

[RickM]

We've all lived through the debate on the effectiveness of performance chips in our ECU managed cars. Pretty much the change takes advantage of the higher octane where ignition can be advanced and you realize a small bump in power.

As I understand it higher octane allows the fuel to burn longer and more completely.

My question is, how does this influence combustion/cylinder temperatures? I'm told that a higher octane will raise temps considerably. If so is a different heat range plug needed to complete the modification and make it totally effective/safe/reliable?

[asphaltgambler]

There was disussion on this recently. The lower the octane number, the slower and longer the burn process so the combustion temps are higher. The higher the octane rating the quicker the burn process and the cooler the combustion temps are.