heres another newby question for y'all.

[performance-wise]

somebody please explain what knock is? In laymans terms? :Oops:

[RTFGTR]

Your not a noob... All that bling in your signature and avatar. I'm calling shananigins on this one!!!

[TasR.X]

Engine “knock” is the sound produced when a car’s air/fuel mixture is ignited by something other than the spark plug, such as a hot spot in the combustion chamber. Light knock is normal in modern engines during heavy acceleration or under other high-load conditions, such as climbing steep grades. Severe “knock” may be caused by fuel with too low an octane rating or by improper adjustment of the ignition system. This will harm the engine. “Knock” is also called “detonation” or “ping.”