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I just installed a neuspeed power module on my '20 mk7.5 gti 6speed. I bought it used so I have no instructions. It has two switches on the back im assuming one is for octane & one is for psi. What switch does what in what position? Online instructions only say up is 100 octane, down is 91. Someone help me out please, I need to know what switch does what & what positions they should be in. I always run 93 octane. Thank-you