x_itchy_b_x

#1

well i searched mr2oc, celica tech, and here.
i got all of "jdm ecu's have speed, a very easy thing to get rid of"
but i havent found anyhting that actaully tells you how.
so if anyone has info please let me know.

jgreening

#2

standalone or techtom. I am not aware of any other way but that doesn't mean it doesnt exist.

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QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback]i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this.

soulshadow

#3

Do u mean the 180 KPH speed limit??
There is one wire that feeds into the ECU via the Speed sensor on the tranny, it also connects to the Speedometer on your dash. Cut that wire that feeds into the ECU and there u go! U will get a check light tho.

But what I found out is that when you hit Speed cut on your ecu, your pretty much close to redline cut anyways. So if you go at 120 MPH = 180 KPH. Your really close to rev cut limit. Its really pointless to cut it, but if you already have all the wires exposed go for it! That extra 10 MPH will do a little bit of good, but for a fact you will never go that fast on a straight lane.

x_itchy_b_x

#4

thanks for the help.

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Visit My Automotive & Tech Blog.

Defgeph

#5

Speed cut ? What speed cut ?

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I will return one day.

Insanity-74

#6

Speed cut is a speed limiter. You can buy a small electronic gismo very cheap that if you put into the afore mentioned "cut" wire, will convert the speedo from KMPH to MPH thus making the speed limiter come in at 180MPH instead of 180KMPH, which of course is a speed you`ll never reach.

Mr_E

#7

Nope. My blitz box is a full delimit, as the car was already converted to MPH and they left the 112mph limiter in place.

I got mine from ebay, from fensport they are not cheap.

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JDM ST205Blitz Spec NUR Exhaust, somewhere over $1000Needing another one 18000 miles later, bloody annoying.

Cutrara

#8

This is only for ST Celicas, but it should give you a good idea.

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QUOTE (cjh4l22 @ May 15, 2009 - 4:02 AM)hey, nice mod does it come in hetero?Need parts?I'm parting out a '94 ST

Insanity-74

#9

Well all they did to my car when it was imported was change the signal that goes to the speedo to turn it to MPH, still on the origional ECU and I`ve had mine way past 120mph (on the track of course)

eggman40

#10

A bit off topic but this thread got me thinking, when im done with the 3sgte swap and assuming that all the wiring is correct, what will my usdm speedometer read? will it be accurate with mph or will it be inaccurate because the ecu thinks its reading in KPH? thanks

This post has been edited by eggman40: Jan 2, 2006 - 9:11 PM

lagos

#11

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QUOTE(eggman40 @ Jan 2, 2006 - 9:11 PM) [snapback]373860[/snapback]

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A bit off topic but this thread got me thinking, when im done with the 3sgte swap and assuming that all the wiring is correct, what will my usdm speedometer read? will it be accurate with mph or will it be inaccurate because the ecu thinks its reading in KPH? thanks

the speedo will be correct. the only difference is with the numbers they print out on the gauges, but the ecu and speedo motor all work the same.


what speed cut are you guys talking about? i think some of you are talking about fuel cut from too much boost presure?

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15PSI - 30MPG - Megasquirt Tuned

soulshadow

#12

I don't know about the speedo, but just to make sure, I swapped out the Speedo on the tranny of the 7A USDM verison with the Speedo on the 4age 20V tranny. They are both interchangeable, and I don't seem to have any problems. Not sure if the JDM speedo will work with a USDM Gauge. The wiring is basically the same as well as the speedo plug.

recneps

#13

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QUOTE(lagos @ Jan 3, 2006 - 3:05 AM) [snapback]373879[/snapback]

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QUOTE(eggman40 @ Jan 2, 2006 - 9:11 PM) [snapback]373860[/snapback]

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A bit off topic but this thread got me thinking, when im done with the 3sgte swap and assuming that all the wiring is correct, what will my usdm speedometer read? will it be accurate with mph or will it be inaccurate because the ecu thinks its reading in KPH? thanks

the speedo will be correct. the only difference is with the numbers they print out on the gauges, but the ecu and speedo motor all work the same.


what speed cut are you guys talking about? i think some of you are talking about fuel cut from too much boost presure?

japan has some kind of thing where they limit the max speed of a car, electronically, so people in skylines dont got 360kmh on japans freeways.

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Former: 96 GT 5 speed(i/p/e)Fate-rear ended by mack truck00 GTS 6 speed(i/ Bored TB 63mm - 68.5mm w/ butterfly/ Ported IM/ IMG/ PFC/ Commander/ datalogit/ Ported & heat wrapped Header/ Decat/ UEGO/)193FWHP 14.2(1/4mi) @98mph, 2.12 60ft (just intake, unbolted Exhaust, and gutted)Fate-side swipped by 18 wheeler at 75mph.Next: maybe an elise

Mr_E

#14

Correct. All JDM cars are limited to 180Kph (112mph)

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JDM ST205Blitz Spec NUR Exhaust, somewhere over $1000Needing another one 18000 miles later, bloody annoying.

lagos

#15

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QUOTE(Mr_E @ Jan 3, 2006 - 12:32 PM) [snapback]374089[/snapback]

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Correct. All JDM cars are limited to 180Kph (112mph)

have to say i agree with the people in japan. there is no reason to go any faster then that

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15PSI - 30MPG - Megasquirt Tuned

Bigmeanbulldog55

#16

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QUOTE(lagos @ Jan 3, 2006 - 11:27 PM) [snapback]374316[/snapback]

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QUOTE(Mr_E @ Jan 3, 2006 - 12:32 PM) [snapback]374089[/snapback]

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Correct. All JDM cars are limited to 180Kph (112mph)

have to say i agree with the people in japan. there is no reason to go any faster then that

I'll second that. Unless you've got a real high end drag car, there's no need to go any faster.

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Live Free, Be Happy

bufferdan

#17

i think ive seen that you can put a switch on the speedo wire... just keep it on until you wanna go real fast them flip it off...i guess you will lose speedometer reading though

ToysRfast

#18

HKS has the SLD speed limit defencer. I really can't say much about how it works since the instructions are in Japanese. But I do know it will stop the ECU speed limiter and let you go passed 180Km/h

Mr_E

#19

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QUOTE(Bigmeanbulldog55 @ Jan 4, 2006 - 5:53 AM) [snapback]374351[/snapback]

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QUOTE(lagos @ Jan 3, 2006 - 11:27 PM) [snapback]374316[/snapback]

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QUOTE(Mr_E @ Jan 3, 2006 - 12:32 PM) [snapback]374089[/snapback]

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Correct. All JDM cars are limited to 180Kph (112mph)

have to say i agree with the people in japan. there is no reason to go any faster then that

I'll second that. Unless you've got a real high end drag car, there's no need to go any faster.

Or, for example, want to commute to work in Germany. Or enjoy some track work. Or any number of other reasons not to have a speed cut.

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JDM ST205Blitz Spec NUR Exhaust, somewhere over $1000Needing another one 18000 miles later, bloody annoying.