how to remove the speed restrictor.

[TheBlack240]

Just curious but i hear alot of people saying they cancel they're speed restrictor or speed management. Is there such a thing? and if so how do you cancel it? If theyre just messing with me then i should go beat them up. haha. so is there a speed restrictor?

[NismoGreg]

There is a wire to the ecu that you can cut that eliminates the speed governer. I think it is a brown and green wire (not 100% sure) However, it will only gain you about 10mph top speed because you still have to worry about your rev limiters. Like on my car, I cant go over 5000 rpms in 5th gear. The only good way to completly remove any speed/ rev limiters is to get a aftermarket ecu. Somthing like a jwt computer.

[TheBlack240]

ohh i see, so the wires you're talking about are on the 240sx ecu harnesses? Is it the same for all 240's?

[NismoGreg]

The wire might be different in your sohc but go to the faq on 240sx.org and they talk about different ways to remove the speed governer. I suggest you get a ecu wire guide on 240sx.org. I think that you can also unplug a sensor from your transmission that eliminates the 5th gear rev limiter but your tach wont work. My car use to cut out at 115 and I cut the wire to my ecu and now I can hit about 125.

[got2b240]

im on my cuz name on here but...the reason u can only rev out to 5000 is b/c of the 5th gear sensor once that is removed the only thing stoping u is the rev limiter its self