hello i have a 2004 gt2 i have had it for 4 yrs has 116k miles. i have put eld sdt cans on it they sound real good i just put a infurno ram air hood and hooked it up. im lookin to upgrade the spark i replaced factory ac delco plugs in it. i read in a form somewhere to make a hotter spark u need to change voltage regulator any ideas on this.
