Heck, so could I just go for a 91 tune and run 89 if I want and let it pull it back just enough to stop the knock and run the 91 when needing the extra power to tow with or should I just do the dual 89 91 tune?
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Heck, so could I just go for a 91 tune and run 89 if I want and let it pull it back just enough to stop the knock and run the 91 when needing the extra power to tow with or should I just do the dual 89 91 tune?