Removing speed limiter on 93 KA24DET

[KA24DETDRIFTER]

Hey i want to remove the limiter on my 1993 Nissan 240SX fastback but i dont know if i can.Its automatic.Please reply and tell me if i can.I've only got a magnaflow catalytic converter,2 custom made intakes,1 python air mass meter,NGK Iridium Spark Plugs,Nology Spark Plug wires, and an ace turbine muffler 3.5".thanks

[KA24DETDRIFTER]

Hey i wanted to kno if u can remove the top speed limiter in an automatic 1993 240SX fastback. Thanx

[~4N~]

Hey i wanted to kno if u can remove the top speed limiter in an automatic 1993 240SX fastback. Thanx

If your car is an auto, then it shouldn't have the limiter.

Can anyone please tell me if S13 and S14 auto ECU's are interchangeable?Thanks for any info.

[BlackHat]

ooohokie i guess ill be changing to the auto.. never knew 240sxs got this kind of.. not-so-great gas mileage

Most stock tunes out there are very conservative. If you were to get a standalone and tune it right you'd get good gas mileage... You also wouldn't have to worry about the speed limiter

I know that's a really old post, but thought someone should throw that in. Also, someone mentioned killing the tach signal... They weren't talking about the CAS signal were they? (from the dizzy, not the late 240 transmission CAS) That sounds like it'd be a really bad thing.

[zanilth]

Alright, I have a s13 and removed the limiter/governor....Just cut pin wire 32, and pulled the two middle plugs. Bingo.

My question is, is it the same process for the S14? Trying to get one, hopefully will have it in a few weeks. Thats the first thing thats gotta go lol.

[Kittychubbs]

should be.I did the same thing u did Snip 32 n unplugged round plugs It worked before no prob, BUT my governor kicked in yesterday wut could of happened??gunna check the plugs under the car tomo.

[zanilth]

I think one of them is a round plug, one is square....its been a while since I was under there, but I looked at the diagrams linked to earlier in the post. It is the two middle ones in a sequence of 1 2 3 4. 2 and 3 get pulled, 1 and 4 stay. Never hit the limit again.

Only thing is if you don't pay attention to your tach, prolly not the best thing to do...not paying attention and you will be pinging redline....definitely not good.

[Kittychubbs]

thats very true thanx for ur help!

[russianpimp15]

hey does anyone actually know what controls ur revlimiter cuz my old two forty didnt hit limiter till 8000 rpms and my new ones hits it at about 7200rpm and have no idia why

I can't seem to find a straight answer on removing the speed limiter. My car is cutting off at 107mph and I'm going to the track tonite.

Do I have to unplug the sensors from the trans, or just put a switch on the VSS to ECU wire?

[russianpimp15]

hey does anyone know hot to actually eliminate the revlimiter completely and what controls ur rev limiter ? i had a 240 before and it red lined at 8000 rpms and the one i have no redlines at 7200 which is weird and i dont understand it

[tom240sx]

removing top speed limiter and rev limiter is this the same way for a sr20det? or is it different?

[livinglegend2100]

okay so, i was reading this post, and was everyone was agreeing on snipping the #32 wire(green w/ yellow stripes). and then unplugging the two square-ish plugs on the transmission.

NOW people are sayin its the two round-ish plugs, or one round one and one square one. WTF?!

OKAY, i have a 93 s13 HB, 5spd ka24de. what EXACTLY do i need to do?!

[midnightsociety209]

this sounds good never tried it i hate my 5th position wont let me go higher the 5000rpm imma try this nice write up

[chrismo240sx]

me too, and i dont know why u would rev the ka to 8000 rpms ^ very dumb if ask me

sorry for bumping this thread back up and keeping it going if anyone caresbut imma do this soon and hopefully it works!

[mitcheyismyname]

well i've read the first and last page of this thread....

i assume snipping #32 and pulling the middle transmission plugs will work with a stock 92 240sx Coupe SE?

[WDRacing]

You know...I never actually did this to my S14. I just never got around to it or I would have done an article on it.

Nowadays so many people just use the Emance or Enthalpy Rom tunes that most don't need the mod at all.

If you can try it, take pics and give me a brief writeup I'll make it an article and get it posted on the Tech Page...giving you full credit of course.

Deal?

WD

[danni702]

What color

I just cut my ecu wire and everyhtign was good.Didn't bother messing with transmission sensors.

What colors are the wires and when i got these wires do the rev limiter and gov. dont kick in anymore

[danni702]

What colorWhat colors are the wires and when i got these wires do the rev limiter and gov. dont kick in anymore

Ok so where can i find the ecu on my '92 240

[rsmithdrift]

Wow dude this is an old thread. Read back it should tell you EVERYTHING you could possibly need to know.

ECU is under pass. side kick plate infront of the door.

Wire color has been discussed more than you could possibly know. Just look above you.

Infact, just look for my previous posts in this thread.

[240sxmech]

WOW cut this wire, unplugged these sensors. Just replace your ECU with the same year but make sure its from an automatic trans car, and done. Same for the sohc and the dohc, example you have a 93 dohc 5spd, you put a 93 dohc ecu from an automatic. GOT IT, GOOD, END OF DISCUSSION THIS IS GETTING RETARDED....

[illestm30]

i have an infinity m30 1991 convertable and it wont let me burn out or do doughnutz does it have abs or anythng stoppyng me??

[240man91]

ok bad a** write up guys i just found it tho i have only had my 240sx for like 4moths just one qustion there seemed to be cofusen on the plugs to un plug on trans. some say the two squar an some say the two round an some say one of each witch is it. i have a 91 dohc with a 89 sohc trans in it an dose not have four plugs on it just two squar an one round. so i am going to do this tomarrow my book dose not show the wiren for the trans so if u could clear this up for me i am going turbo with mine so this trick would b sweet