One more mod before my tune?
Ok last weekend I added NST pulley kit and the Z1 intake manifold. I'm scheduled for a retune On the 8th of Oct. I'm wanting to swap out my final drive to the 3.692. Should I add this then tune or could I add this gear swap mod with out tuning?
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stillen G3 * Invidia TP and CBE * uprev tune* 308 WHP
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