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timing advance

  1. Is it normal to never have kr? what is normal timing?

    PCM's & Tuning
    I have an ultra gauge which can detect knock retard but I have never seen any value besides 0. Also under normal driving my timing is -27deg, is this normal? Here is the info and list of mods on my car. My car is a 97 pontiac GTP, it has full exhaust with resonator delete, wrapped headers to...
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