Anyone who says they ran 87 in a GTP and "had no pinging" is an absolute moron and completely wrong. Did you scan the car? No... Well there's why. A GTP on 91 will knock from the factory, especially on 87
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07-13-2015
Anyone who says they ran 87 in a GTP and "had no pinging" is an absolute moron and completely wrong. Did you scan the car? No... Well there's why. A GTP on 91 will knock from the factory, especially on 87
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