this might be worth a try...on other cars with pinging problems i've seen cleaning the fuel and intake systems with a profesional cleaner did the trick..i think it was because of carbon deposits glowing and actually detonating fuel with the conditions you describe. the cleaning would have to be something more than just a tank additive. one that hooks into a vaccuum line at the intake....good idea to do anyways and it might work
96 zetec gl.dynomax exhaust(self bent) KKM intake..Bridgestone Potenza RE-910's...other mods also
87' Ford Thunderbird..Now my daily driver ( the wife uses the contour mostly) true dual exhaust with the super mystery mod.(hey there not even there!) tinted windows and stereo upgrade. the $200 car is starting to be a great car
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