speed limit cut for japan engine

[youmolo]

For my car , what i am experiencing in the fuel cut is that , when i drive past 180km/h ...from the speedo , look like 182-183 ...sudenly feel like fuel cut , speed will drop till bout 175km/h and accelerate again.

yea, i tink i just experienced the same thing just now. my meter went past 180 and then suddenly the car lose power so i let go of the fuel and stepped on the clutch. scared the engine later pull the car down lol ;)

so i guess my ecu still go the speed limiter la.

 

[howiechoo]

howiechoo.....whut car and engine are you using..... mayb your car diff from mitsubishi..... because my car bounce..... so with my fren mivic.... alll i wanna say if the situation is diff from other people then my engine is prob..... but all my fren engine and me are the same..... mitsubishi surely bounce back..... 2micec and 1 4g91.... bounce till 160

i not sure wat engine model..but it's a toyota engine...the engine are on a corolla seg

 

[howiechoo]

double post..

 

[yusaini]

open ur speedo meter,look for screw label RSW and unscrew it and put back ur speedo meter.i done it at my mitsubishi mivec speedo meter and now there is no limit cut above 180kmh.dont waste ur money on pivot speed meter or any speed limiter.

 

[kwai]

unscrew and take it out? :D

 

[kwai]

i know it dun allow fuel to go in..but it will not behave like this on a normal engine....that's the way it should be...a speed cut will only stay at the highest speed it programmed...it will only deaccelerate but not full deaccelerate and drop to 160km/h like wat u said..btw, if the car manufacture really do it this way, they should close down....a speed cut should be something like cruise control..stay at the highest speed it programmed when u keep on accelerate.....

hehe, seems now got more ppl experinced the same frm me.. :D

neway, i just sharing my own true experience... :D

different engine may react different with different design... :D

or sifu howiechoo wanted to ask mitsubishi close shop? :D

 

[yusaini]

yes kwai,take out the screw and put back ur speedo meter back at ur dashboard or u can call me four detail 017 3949996

 

[alvin24]

Kwai, I think howiechoo has never sat in a JDM engine and experience speed cut before la...

When the speedcut kicks in at 180km/h... ur engine feels like it gets cut off... feels like u off throttle totally (therefore has a slight jerk)... up to 170-175km/h before the power comes back in (got until 160 so low wan meh? No kua... mine drops to 175 only).

Toyota engine or not... is the same shit when I was in my cousin's 4AG-ZE lar. =Þ

Summore u dunno what model engine u're running on... I suspect probably the stock m'sian built model that doesn't have speed cut... and your car probably already reached its top speed at 180km/h without having any more power to go summore le kua??

 

[alvin24]

yes kwai,take out the screw and put back ur speedo meter back at ur dashboard or u can call me four detail 017 3949996

I'm assuming that would disable the digital speed sensor to send signals to the ECU... i wouldn't recommend that if i were u.... =Þ Coz' for mitsu, the ECU depends on it for tuning on the higher speeds.

 

[yusaini]

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Board Index » Tech Support » Taking cut-out out of GSR
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Taking cut-out out of GSR




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harpa
Posted: Fri Apr 18, 2003 10:32 pm Post subject: Taking cut-out out of GSR

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I hear that you can take the cut-out out from a GSR only by taking a screw out from behind the dash somewhere??!?

Is this true? If so where is it? Does it damage it in anyway or just make the ride more fun?





Joined: 15 Apr 2003
Posts: 6
Location: Queenstown






evolution
Posted: Fri Apr 18, 2003 11:30 pm Post subject:

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Yes this screw takes out the 180km/h speed cut

Take out your dash, look at the back of it and in the middle at the top there is a screw labeled RSW. Take this screw out and no more speed cut
This screw sends the speedo sensor signal to the computer
Taking the screw out doesn't effect anything else at all
I have done this to about 5 mitsi's





Joined: 15 Aug 2002
Posts: 386
Location: In front of you






SLOGSR
Posted: Sat Apr 19, 2003 1:02 pm Post subject:

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what year is your gsr ?
this only works on the 92-93 models
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harpa
Posted: Sat Apr 19, 2003 3:18 pm Post subject:

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yer its a 93





Joined: 15 Apr 2003
Posts: 6
Location: Queenstown






harpa
Posted: Sat Apr 19, 2003 3:19 pm Post subject:

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cheers guys





Joined: 15 Apr 2003
Posts: 6
Location: Queenstown






David.
Posted: Fri Aug 26, 2005 11:18 pm Post subject:

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I have a 1996 Evo 4. How do you take the speed cut out of this?





Joined: 24 Aug 2005
Posts: 3







MAGN1T
Posted: Sat Aug 27, 2005 10:16 am Post subject:

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All you need to do is cut the speed sensor wire at the ECU. This applies to all EFI Mitsis from about '90 onwards

Steve
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Joined: 28 Jul 2002
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skids2
Posted: Sun Aug 28, 2005 8:17 pm Post subject:

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I hope this is for track use?





Joined: 14 Oct 2004
Posts: 178







V R 4
Posted: Sun Aug 28, 2005 9:07 pm Post subject:

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Is there any advantage of taking out the speed cut for just daily driving??

I could imagine it could be an advantage if you were using it on the track or maybe down the strip if your car could reach those speeds.

Josh
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Monsterbishi
Posted: Sun Aug 28, 2005 9:25 pm Post subject:

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MAGN1T wrote:
All you need to do is cut the speed sensor wire at the ECU. This applies to all EFI Mitsis from about '90 onwards
Steve


That's the crap way of doing it, which affects moving idle speed control in the process, best way is to interrupt the RSW line.

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Joined: 28 Jul 2002
Posts: 3515
Location: Christchurch, NZ






MAGN1T
Posted: Sun Aug 28, 2005 9:40 pm Post subject:

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You're correct, it does affect the moving idle speed control.
I've found it's not a problem and the speed cut removal has worked trouble free in my car for the last 4 years.
It's a free mod and cars with electronic speedos don't have a screw to remove.

Steve
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David.
Posted: Mon Aug 29, 2005 6:49 pm Post subject:

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So if my evo4 has electronic speedo then there is no screw??? So cutting the wire from the ECU is the only way???





Joined: 24 Aug 2005
Posts: 3







Monsterbishi
Posted: Mon Aug 29, 2005 6:57 pm Post subject:

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David. wrote:
So if my evo4 has electronic speedo then there is no screw??? So cutting the wire from the ECU is the only way???


I'm fairly sure the E4 onwards used a electronic speedo signal, and this leads into the next obvious point, why you'd want to do this?, it's faster than the speed limit for any public road motorsport event that your car could enter, is fast enough for a 11 second 1/4 mile pass, and your tyres will be at their limits speed wise too.

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Joined: 28 Jul 2002
Posts: 3515
Location: Christchurch, NZ






afterburner
Posted: Mon Aug 29, 2005 6:58 pm Post subject:

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Could you not cut the wire then rig a switch so that it can be on when not needed (ie 99.9% of the time), but you could flick the switch and remove the speed cut when required?

I had thought about doing it, but the only place I'd be needing it would be the back straight at Puke...
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[alvin24]

So its true then... it does interupt the speedo sensor heading towards the ECU... if thats the case.. better dun do for mitsu lerz... the ECU does depend on the speedo sensor for tuning on certain areas.

 

[Doink]

check the APEX RSM manual...u will get the idea where ecu get the speed signal...and u can remove it...

 

[jasonchan]

when my car reach 180kmh it dont bouce back ...to 170kmh or something like that..

it just move to 185kmh like that then lower back to 180kmh and stay there..the rpm is at 4k +

me is a 1.6 auto..:regular_smile:

 

[patru]

geng,
from my experients, early 90's mitsu models does bounce back when exceeding 180 (gsrs, mivecs, vr4s, evos).
but i never experients it when sitting in an airtrek turbo (beyond 2000 model). the meter just stays on 180 without any jerking/bouncing.

 

[kwai]

erm.. those are new technology... old car like mine will bounce.. sob..

but nvm, since i dun like it bounce, i already taken out the speed cut~! huahahhahaha~! :D

so i can have smooth ride~! :D