Ford Mustang Engine Ping

Plugs,coils,upgrade Gas, Throttle Body Cleaning, B&g Fuel Additive, Maf Sensor The Car Still Does The Same Thing . But It Only Does It...

When Taking Off Fast And Holding Down On Gas Steadily There Is A Small Pinging Noise. What Is This And How To Fix??

I Have A 2000 Mustang Gt With 122,000 Miles. At 4,000 Rpm's I Am Getting A Bad Pinging (detonation). Does Not Matter If I Am At Wot Or Not...