Can someone tell me what sparkplugs to run in my Supercharged '03? My tuner, Crazy horse racing, put in AC103 coppertops, And I don't like them, they are burnt to nubs after 5-6000 miles. Thanks in advance guys.
Yep, NGK all the way. Dont need the expensive gimmik plugs for the Cobras, they are happiest with standard copper plugs
On a stock un-boosted modular 4V I like the E3s. I just installed my first set a couple weeks ago just to see if they were worth a damn with some first hand experience and I can say for certain there is a difference. Car idles so smooth you dont feel it running and mileage has increased 9% Dont feel any power difference but for economy and smothness they rock!