performance parts

I have normal spark plugs in my mazda 323f 1.5 ltr engine and wonder if it would be a good idea to get spitfire tripple platinum ones to make for a better combustion of fuel for more performance and better acceleration also what is the best fuel additive at the moment I have tryed nitrox power hot shot which improves things but what octane boosters really work

andy

toluene (about 115) if you can get it.

Welcome to AF