A lot of talk on the US forums about the knocking noise. Most are saying yes it is pinging and seems to happen to a lot of them. Some are saying higher octane makes no difference. Sounds concerning to me as pinging can lead to detonation.
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Jeep TJ rebuilt 4.0L, Custom Steel Roof Racks, vintage ((Jeep specific)) 15” Centerline Hellcats,
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