more speed more speed!!!

[s13cruzer]

ok , i'm kinda new to this but have big plans for the future , but first , where is the #### speed limiter on my car and how do i get rid of it safely?
                          '90 240sx fastback

[AceInHole]

I'm not sure if there is a way for SOHC's to disable the speed limiter.  At least, it isn't documented.  For info on the DOHC speed limit cut check
http://www.240sx.org ,
it's in the FAQ.  
Maybe you can see if your ECU has the same wire color/stripe and position.  If it doesn't have both, I wouldn't mess with it.

The other way to get rid of it would be the Apexi Rev/Speed meter.  At least I've heard it intercepts the speed signal and disables the governor by "tricking" the ecu.

[240booster]

<a href="http://www.zilvia.net/forum/topic.cgi?forum=1&topic=1619&start=0

I" target="_blank">http://www.zilvia.net/forum....t=0

I</a> just did it man make sure u cut the right wire and u will be ok although im not sure about this for the SOHC mine is a DOHC s14

[LanceS13]

I cut that wire on the ecu and now instead of the engine just quitting at 5100rpm (5th gear) it starts vibrating violently (rev limiter) at 5200rpm. &nbsp;I does the same in fourth gear (different rpm limiter--6300? forgot). &nbsp;So I probably gained a whole 3 mph top speed from doing this. &nbsp;Where is that backup limiter? &nbsp;And how are you (240booster) hitting 125?

[240booster]

welll urs is an s13 so maybe a little different than my s14 but im hitting the same 5th gear rev limiter ur talking about at about 5500 rpm i think and my speedo only goes to 120 so im guestimating im topping out at about 125 now .... &nbsp; there is a FAQ at 240sx.org about that 5th gear rev limiter u have to disconnect some plug at the tranny i think and something else check it out ... then the sky should be the limit .... lol untill u blow ur motor &nbsp; :-P