Might be a throttle booster...changes response on throttle for faster WOT. Play around with it while you're parked and click the button and accelerate the gas pedal and see if it increases your RPMs any quicker as you click through it. I have one but it's a little bit different than that. What makes me think that is that it has the same three wires that mine does. Follow the wires and see if they go down to the accelerator pedal and then you'll know. Good luck
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2009 Solid Red Touring $ Stillen Front Fascia $ Berk Hfc's $ Nismo S Tune Free Flow Exhaust $ Z1 Ported Intake Plenum $ Stillen Gen 3 Intake $ Setrab 25 Row Oil Cooler $ Uprev Tune $ Sprint Booster Throttle Enhancer $ RJM Performance Clutch Pedal $ Upgraded Z Speed Clutch Slave Cylinder $ Torque Pro OBD2
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