ANTIPOD

I DIDN'T HEAR THE PINGING WHEN I BOUGHT IT I NOTICED IT HAPPENED AROUND 2500 RPM UPHILL UNTIL ENGINE WARMS UP THEN IT ALMOST DISAPPEARS I HAVE USED NORMAL UNLEADED AND HIGH OCTANE BUT IT MAKES NO DIFFERENCE

I'VE JUST BOUGHT MY 2ND TARAGO GLI 1993 AND IT DOESN'T RUNN QUITE AS WELL AS THE OLD ONE ( MAKES PINGING SOUND ). CAN YOU FINE TUNE A TARAGO? ANY SUGGESTIONS