Stage 1 tunes will also fix this, making the car overall much smoother and easier to drive. On 2015+ WRXs, many people complain of "rev hang", where the RPMs will take too long to drop shifting between gears. Instead, the car just keeps pulling all the way to redline.Īnother big change with a stage 1 tune is that it fixes rev hand. It also smooths out the powerband, eliminating the mid RPM dip around 4.5k present in the stock tune. It also smooths out the throttle, making it much more linear, fixing the oversensitivity of the stock tune. Stage 1 adds significant horsepower over stock, around 30 whp. The AccessPort also allows you to monitor some important parameters from the ECU, like knock correction, fuel trims, air-fuel ratio, intake air temperature, oil temperature, and more. It simply plugs into the OBD-II port under your dash, and with the press of a few buttons, your car will be Stage 1 in a few minutes. The AccessPort comes preloaded with tunes for the various stages. If you have a newer model, your only option to do this is using a Cobb AccessPort. This is the best starting point for anyone looking to mod a WRX. ![]() Stage 1 just means you've flashed a tune. The simplest of the stages for the Subaru WRX is stage 1.
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