Speed limiter?

[Imissmyturbo]

I know there is one on the stock SR and KA's but what about the RB's? If there is one I would guess it would be around 115 or so correct? Would you use the same methoid of bypassing it as you would with the SR/KA?

[n00b240]

speed limiter in the KA?? I dont think so, i hit 120 all the time dont know bout the SR

[rbsileighty]

I think from what I read there is one... i think it's around 118-120 but I'm not sure. Look around some AU sites... I think that's where I saw the info.

[Syntax360]

KA cuts off @ 120mph

[Redline240]

How do you get rid of it?

[HotWIRED]

Cut the wire (pin 53) on the ECCS. Its the HICAS dianostic/speed limiter wire.

[BlockHead]

I am pretty sure that I have read that the rb25det limiter kicks in at 180kph, hks makes a speed limiter bypass, but as was said you can just cut the wire.

[wannabskyline]

As for removing the speed limiter, I highly doubt the dealer is willing to help you out with this one. I actually just completed the task last week.It's not too difficult to do yourself as long as you have the ability toramp or lift the front of your car up enough to get to the transmission. Here's the procedure. First you must disconnect two sensors (presumably RPM limiters?) from the transmission. One is the fourth gear sensor, while the other is the fifth gear sensor. If you look at the transmission under the car there are supposedly four (4) sensors (I only saw three, but the fourth one is somewhere under there), the ones that need to be disconnected are the middle two (2). The electrical connections are simple snap lock configured so not cutting is required. Once the two connections are disconnected, I recommend you thoroughly tape over the ends of the connectors to prevent moisture from entering within.

By doing this step the ECU doesn't know your 4th or 5th gear RPMs, therefore it won't limit you. Note: If you have faith in placing your car on jack stands (some members have done this) you can test the limiter for each gear before and after each step. What you'll find is that the ECU limits the top end RPM for 4th and 5th gear before you disconnect anything. Afterwards, the skies the limit.

The last step is to disconnect a control wire that comes from the transmission area and passes by the passenger side of the starter in the engine compartment. You'll find another simple electrical connection (looks like a tube style fuse holder) with small gauge wire. Unhook this connection and then drive your car and you'll notice the speedometer doesn't work, nor do the number onyour odometer change. What you've disconnected is the sensor that transmits the speed to the ECU and the display. Now the computer tries to watch your speed to make sure you don't go past 115mph , but never cuts off your fuel since it doesn't have a clue how fast you're traveling.

from 240sx.org

[FAST-DATSUN]

If you disconnect the speedo the computer will go into default and depending on the year eather us RPM rev limit OR on some years limit the RPM's to 5500rpm.....