Austinn Meredithh
New member
I have a 2002 grand jeep Cherokee Laredo (4Litre 6 cylinder). I just bought this car and changing most of the engine components out, so far i have replaced the battery, alternator, starter, and air filter. I was also thinking about doing the spark plugs. Is there such thing's as performance spark plugs, and if there is do they make any difference? Anything i should look for in particular?