what the other guys said at least 13 to 14 degrees stock.. if you raise it anymore it'll let you know by pinging during idle.. I tihnk I could go about four extra degrees before needing at least 93 octane on my stockish motor
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Ryan
91 gmc syclone
86 C4
01 Kawasaki zx12r (dyno'd 197rwhp)
91 mustang gt
89 olds cutlass
90 mustang lx (sold)
87 buick gn (sold)
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