USMCDrifter

Okay, maybe I'm doing something wrong here, but let me know because somethings awry.


I disconnected the Rev Limiters from the tranny. 4th and 5th revved up fine all the way to red line.

I ran the switch to the VSS. My speedo dies when I pop the switch. And I can accel passed 117.

Here's my delima. If I am running hard and I kill the VSS, it will run until I reach a certain RPM in 5th gear and then some sort of secondary governor will kick in and cause me to slow down until I reach a certain speed and then I have to re-enable my VSS for it to kick on. I don't know.


HELP!!!!


-Dave

DRiften

at which RPM does that secondary governor kick in?

if its around 5000... then its your 5th gear sensor. hmm. remove ALL THE SENSORS from the tranny. take it for a spin and tell me if you get the same effect even with no sensors in the tranny.

i am pretty sure that the 5th gear sensor. cause i was gettin the same effect. but i didnt know what was it. so i was playin around with the sensor.. and finnaly removed all of them.. and that solved the problem.

did you TEST IT RIGHT?

while the car idles, put it in 5th gear
keep holding the clutch
rev it up
if it doesnt go higher than 5000 rpms.
its your 5th gear sensor.

USMCDrifter

Yeah, I ran the rev-test, and it went up to redline just fine, but it kicks out, I'll run gauntlet and let you know when it kicks out.

Take Care

-Dave

DRiften

ok. do that and come back and tell me.

Slidin240

Hey, i was reading through all the posts and i wanna do this to my 240. i own a 89 240sx fastback its an auto. can i do this to my car or does it have to be a manual tranny? i now this has been brought up b4 but i was kinda confused lol thanx in advance.

MAD240SX

Why dont you guys put on the HKS Speed Limit Defencer (SLD) instead of doing all that work and your cluster does not work you can buy the (SLD) and then buy a LSAUTO 180MPH cluster from Kevin and watch that needle go for those people that are think of going SLD here is the price.

HKS (SLD) $125 manual - $170 auto

180MPH Cluster $115 can buy it at www.lsauto.com

LTSCUDRFT

I have a 5-speed w/ an auto ecu and i've made my neddle touch the gauge cluster w/o any problem that's at 5700rpm~220kph.

here is how to calculate your speed for 5th gear only

0rpm ~ 0kph/0mph
500 ~ 10 / 6
1000 ~ 30 / 19
1500 ~ 50 / 31
2000 ~ 70 / 44
2500 ~ 90 / 56
3000 ~ 110 / 69
3500 ~ 130 / 81
4000 ~ 150 / 94
4500 ~ 170 / 106
5000 ~ 190 / 119
5500 ~ 210 / 131
6000 ~ 230 / 144
6500 ~ 250 / 156 At this point w/ the "E" your 100rpm in redline.
7000 ~ 270 / 169


hope this makes it easy

DRiften

2 things:

1st.
i never knew its possible to put an ecu from an auto to control the manual one. hmm. but if you did it, thats awesome. nice trick.
2nd
how did you end up gettin all those numbers for 5th gear? some of them are not even right. if you go on my car profile (by clickin "my ride" in my signature) you can clearly see in one of the pictures that at 4500 RPM i was driving ~ 115mph by the gauge.

LTSCUDRFT

your pic was takin' on a slight angle and it says about 4650rpm or so, That means you were going about 112~115mph. so I am right.

DRiften

thats nice. i never knew they had these products for sale. hmmm. i am thinking of gettin this myself now.

well for peole who dont have the $250, i still recommend go with my way.

DRiften

the angle is rotational. the camera was lookin straight at the cluster, but the angle was rotational. meaning this symbol: "<" is the same as ">" but at a 180 degree of a rotational angle. so the rpms are acurate. i was in the car. i saw it.

based on your numbers, i see a 12 - 13mph increas in every 500rpms. which mean every 41.6 RPMS increase will result in 1 mile per hour speed increase. (500 / 12 = 41.6)

meaning...
41.6 rpm ~ 1mph
416 rpm ~ 10mph
4160 rpm ~ 100mph
you get the idea.

at about 4550 rpms (once again, i was in the car. i saw it) my car was doing about 114mph.

by your formula: 4550 ~ 107pmh.


aaaaaaaaaaanyway, i am not here to argue about useless numbers, its only about 7 miles of a difference for chirst sakes. lol

but i wonder how did you get the numbers.
i got mine using my formula:
(RPMS / 100) * 2.5 = YOUR SPEED

lets try it out.
4550 / 100 * 2.5 = 113.75 MPH. (didnt i say i was going about 114mph at 4550rpms earlier?)

LTSCUDRFT

DRiften said "i was in the car. i saw it." it's nice to know that you were paying attention to you tach. and not the road at 110+mph.



I think this pic says 4600rpm.
And how i got my info was the fact that one night i was driving, and i noticed that at 90kmh i was at 2500 rpm and when i went to 3000rpm i was at 110kmh whitch means for every 500rpm increase my speed would climb 20kmh.
I also went from 2000rpm to 3500rpm and my speed went from 70kmh to 130kmh, I would of just put the speed in kmh but i know that 95% of this Forum is from the states so i divided the speed in kmh by 1.6 and got the mph and rounded it down or up to the highest or lowest #. and also your pic was takin' on a upwards angle and about at 45 degrees to the left.

EDIT: it also depends on if you were going down hill or not, because if you were going down hill you car would go faster with less effort. hence your speed of 113~115mph at 4600rpm.

DRiften

it never matters if the car is going uphill or downhill, the speed of the car only matters on the rpms.
maybe it will matter on autos, but manuals - hell no.

example 100mph @ 4000 RPMS (just an example) will be 100mph @ 4000RPMS at any road condition or terrain.

once again, when i took the picture, i was in the car. it doesnt matter what anlge is it, i saw the rpms, i know it.

LTSCUDRFT

1st: next time you have a chance, stop on a long flat road and do a zero to 60 time and then try it going down hill. It will be alot faster, this also works with your 1/4 mile time... like i said "if you were going down hill your car would go faster with less effort."

2nd: So you took the pic and were driving at 110+mph at 2:04pm, no wonder you crashed your car.

3rd: forget the first one, because you can't do that w/ a totaled car.

cougar10ag

more info on cutting the wire on the ECU?? i've been readin a FAQ and they said this works perfectly. but i'm guessing the rpm limiter is still in effect.