09-12-2014, 02:52 PM
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#243
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Dismember
Join Date: Mar 2013
Drives: 2013 Red Scion FR-S
Location: Castro Valley
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If you run a 93 rom with less than 93, you will probably lose some power. How much I'm not sure. The car will knock and then cut back on timing. You're better off running the 91 tune with the 92 gas.
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