Nitrous Express NX Digital RPM Window Switch (Fits All Ignition Types No RPM Chips Req) car enthusiast gear PERRIN 22-26 Subaru WRX /

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Nitrous Express NX Digital RPM Window Switch (Fits All Ignition Types No RPM Chips Req) car enthusiast gear PERRIN 22-26 Subaru WRX /The NX Digital RPM Window Switch keeps the nitrous from activating at low RPMs and shuts off the nitrous before you over rev and or hit a rev limiter. This new Digital design allows you to set high and low RPMs quickly and easily without changing pills or chips. Certificate of Origin Warranty