I have a problem with pinging in my 93lx,ever since I bumped my timing to 16 degrees.I put it back to 14,then back to 12! But it still pings,not constant,but enough to bug the hell out of me.My ignition system is stock.I just bought a screamin demon coil,dyno mod,cap and wires.(they said the spark was to hot for stock wires) Has anyone used this product,is it a good product?? Many thanks in advance!