VSS 155 mph Off= N2O, VTS,RVS,BC Duty

K-Series Programmable ECU installation questions / support issues
sass
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VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by sass » Tue Jun 16, 2015 7:53 am

Hondata
Have you ever had the problem when speed sensor turns off after car reaches 250km/h? ( 155 mph)

Image

My speed sensor 78410-S5T-901
What could be a solution changing to some alternative more reliable sensor?
Thank
Attachments
vss-off.kdl
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Cr-v RD8+K24A2turbo+Kpro V4 prb+NPR3/6Speed+ТС+ HFS4 v3.2.
DynoWheel = 472kW / 589 N.m
HRX One Mile Challenge = Max Speed 282km
Known as Sniper

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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by Hondata » Tue Jun 16, 2015 9:37 am

The speed sensor will only read to 255 kph (internal limitation of the ECU), but it should not switch back to 0.
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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by sass » Tue Jun 16, 2015 11:01 am

I understand.

What might be an idea?

Image
Cr-v RD8+K24A2turbo+Kpro V4 prb+NPR3/6Speed+ТС+ HFS4 v3.2.
DynoWheel = 472kW / 589 N.m
HRX One Mile Challenge = Max Speed 282km
Known as Sniper

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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by Hondata » Tue Jun 16, 2015 2:19 pm

What sort of speed sensor is it? The final drive or 3rd gear?
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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by sass » Tue Jun 16, 2015 10:23 pm

My speed sensor 78410-S5T-901
Image
My gear NPR3
1
3.226
2
2.130
3
1.517
4
1.212
5
0.972
6
0.780
final drive
4.105
Image

Speedometer Drive
41312-PE6-310
Honda CTR JDM 4.764


Сar used in races on the mile
https://www.facebook.com/revSpeed.eu
Cr-v RD8+K24A2turbo+Kpro V4 prb+NPR3/6Speed+ТС+ HFS4 v3.2.
DynoWheel = 472kW / 589 N.m
HRX One Mile Challenge = Max Speed 282km
Known as Sniper

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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by Hondata » Wed Jun 17, 2015 6:09 am

The next step is to try another speed sensor.
Hondata

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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by sass » Sun Aug 21, 2016 4:48 am

Hondata wrote:The next step is to try another speed sensor.
Hello hondata,

still have the same problem with speed sensor: i have changed 2 sensors but still do not work propeply.

2015
Speedometer correction 12%
1 race
Image

2 race
Image

2016
http://www.onemile.ee/?lang=en&page=res ... 2016&acm=1
New gear
Speedometer correction 9%
1 race
Image

2 race
Image

https://www.facebook.com/OneMileChallenge/
Cr-v RD8+K24A2turbo+Kpro V4 prb+NPR3/6Speed+ТС+ HFS4 v3.2.
DynoWheel = 472kW / 589 N.m
HRX One Mile Challenge = Max Speed 282km
Known as Sniper

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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by Hondata » Mon Aug 22, 2016 12:59 pm

We've run multiple vehicles over 255 kph and the speed usually pegs at 255 kph. I would consider raising the front off the ground and running it in top gear to see if the problem is load or speed dependent.
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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by sass » Tue Aug 23, 2016 1:19 am

I would consider raising the front off the ground and running it in top gear to see if the problem is load or speed dependent.
can you explain?
Thank
Cr-v RD8+K24A2turbo+Kpro V4 prb+NPR3/6Speed+ТС+ HFS4 v3.2.
DynoWheel = 472kW / 589 N.m
HRX One Mile Challenge = Max Speed 282km
Known as Sniper

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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by Hondata » Tue Aug 23, 2016 9:16 am

Pick a place where the neighbors will not complain. If you are 4WD then you'll need to disconnect the rear driveshaft. Jack up the front of the car and support the lower arms so that the axles are straight (to keep the CVs happy). Put in top gear and run then engine to 260 kph. If you're close to redline at that speed then I'd be a little careful as the engine is less happy at high rpm under light load than full load.
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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by sass » Tue Aug 23, 2016 12:20 pm

Sorry.
I am not crazy.
I will think about it on the dyno.
Cr-v RD8+K24A2turbo+Kpro V4 prb+NPR3/6Speed+ТС+ HFS4 v3.2.
DynoWheel = 472kW / 589 N.m
HRX One Mile Challenge = Max Speed 282km
Known as Sniper

sass
Posts: 104
Joined: Mon Oct 06, 2008 5:07 am
Location: Evropa-Estonia-Tallinn

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by sass » Thu Sep 01, 2016 12:31 pm

Hondata
I'm sorry for the delay
I have no answers

I know that this is not a problem speed sensor. What frequency (kHz) you are using for the speed readings?
Image

Image
Attachments
tes2.kdl
(197.28 KiB) Downloaded 62 times
tes1.kdl
(53.78 KiB) Downloaded 48 times
Cr-v RD8+K24A2turbo+Kpro V4 prb+NPR3/6Speed+ТС+ HFS4 v3.2.
DynoWheel = 472kW / 589 N.m
HRX One Mile Challenge = Max Speed 282km
Known as Sniper

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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by Spunkster » Thu Sep 01, 2016 1:01 pm

Post your calibration as well

sass
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Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by sass » Thu Sep 01, 2016 1:27 pm

ok
The speed sensor will only read to 255 kph (internal limitation of the ECU), but it should not switch back to 0.
it looks weird
https://www.youtube.com/watch?v=bjVjWMT ... e=youtu.be
Attachments
cr-v-k24a2.kal
(130.52 KiB) Downloaded 62 times
Cr-v RD8+K24A2turbo+Kpro V4 prb+NPR3/6Speed+ТС+ HFS4 v3.2.
DynoWheel = 472kW / 589 N.m
HRX One Mile Challenge = Max Speed 282km
Known as Sniper

sass
Posts: 104
Joined: Mon Oct 06, 2008 5:07 am
Location: Evropa-Estonia-Tallinn

Re: VSS 155 mph Off= N2O, VTS,RVS,BC Duty

Post by sass » Tue Sep 13, 2016 12:37 am

Hondata
how it's going with that issue
Cr-v RD8+K24A2turbo+Kpro V4 prb+NPR3/6Speed+ТС+ HFS4 v3.2.
DynoWheel = 472kW / 589 N.m
HRX One Mile Challenge = Max Speed 282km
Known as Sniper

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