Well mine is still detonating. I've changed out the IAT and the TPS with no real change. Went out for a cruise on Saturday here in Dallas when the temp droped to about 90 (started to cloud over) and the car was fine. I pushed it really hard and had no problems.
Soon as the sun came out again and the temp went back up around 100, I had detonation again. I am running Exxon 93 octane fuel too.
Could cool plugs help?
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1995 Mustang GT