Originally Posted by MalibuJack

That is correct.. However that is assuming stock plug heat range. If your running aftermarket coils and ignition system, you can gap as large as .031, but with colder than stock plugs, I Recommend .026 otherwise you will get misfire at idle

the larger gap will help ignite the mixture better at high RPM, however you would need to improve the ignition system slightly. Even with 21psi through redline, I find I get consistent misfires with a stock ignition system and colder plugs gapped to the stock size.

FWIW I have a set of stock lancer coils, and Evo coils, sitting side by side, they are IDENTICAL except for the plug boots.. That means that the stock coils aren't designed for high performance applications and you should take that into account.