Originally Posted by Gearheaddave

Ok, if he says no to the upgraded ignition then I would tell you fork it up for a higher output coil, you really have to work with the gap when you do upgrades to your engine(especialy Turbo), pomanshoth is correct.
A "hot plug" has a long insulator nose which exposes more surface area to the combustion gases. This keeps the plug temperature higher overall which is perfect for stop-start city driving conditions.
"cold plug" has a shorter insulator nose, which minimizes the amount of surface area exposed to the combustion gases. Cold plugs are usualy used in racing conditions because it can transfer heat out of the cylinder chamber faster. Most turbo, supercharged and NOS applications use this type of plug because of the tremendous heat they generate. A colder plug can also minimize the risk of pre-ignition and detonation, however if the plug is to cold there is risk of fouling during extended periods of idling and low-speed operation.

Like I said befor if you want a nice set of cold plugs, upgrade your ignition, if you dont want to upgrade your ignition then go buy some DENSO plugs, DENSO Iridium spark plugs use on average 5,000 fewer volts to fire than normal plugs. They are not exactily expencive but they will save you money in the long run.....