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go to 240sx.org FAQ you have to cut he speed sensor wire, I think it is yellow and green not sure though, I have done it but have not taken it past the governor since but, it did solve the problem of my car only revig to 5100 in all gears, apparently the speed sensor was not fuctioning correctly and the computer was thinking I was in 5th in all gears
 
zenki_s14 said:
it's a computer thing i think...my fren with a s13 back in japan got this lil box that fixes that problem...he said it was like 20 bucks but i haven't been able to find it here...forgot what it was called to...
That little computer thingy is called an ECU.
 
with the speed sensor pin pulled from the ecu and the sensors disconnected i hit 138 today but ran out of road, it was still accelerating, i was at around 6300 rpms
 
Skazzi "I don't think mine has a limit. Upon inspection in December I was told that something is array with the speed sensor. Thank you previous owner."
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there is no reason upon inspection for them to to look at or even know with out driving if there is anything wrong with the speed sensor!! Maybe if u cut some wires and they saw that, but not reason under any inspection for them to look for that unless u ask them.. Is that why u took it in? I have a 90 240sx fb.

fordtech930
"My car will go 119 and then WWWHHHAAAAAAMMMMMMMMMMM! Spine tingling jerk. AHHAHA." I know what u mean lol the other day that happened to me 6 times.. I was fucking pissed off.. had 2 cruz at 115. =( or around
 
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