T56 into vn

[ChrisMParticipant Melbourne VicVN Calais LS1 View build HERE Member since: August 16, 2017 Posts: 140]

Hi All,

 

Just wondering if anyone can help. i have put a t56 into a vn and want to get the speedo to work. i know the vns are a hall effect sensor and the t56 is a induction sensor. can anyone tell me how i can fix this?

 

Thanks Chris

• This topic was modified 6 years, 6 months ago by  ChrisM.

[Judge1 FrazerParticipant new zealand1983 VB LSA MG9 6060 6 speed View build HERE Member since: February 5, 2016 Posts: 775]

Give Malwood a ring he may have a hall affect sensor that will fit, I think the 3 wire vss is a hall affect

[StevossParticipant NewyVQP Ute View build HERE Member since: August 27, 2016 Posts: 73]

t56 vss is a 12v signwave

ls1 ecu output is a 12v square wave.

pretty sure the input for the vn cluster is 12v signwave

digital dakota sells a box that can adjust the pulse width to suit your driveline to get the pulse count right.

[ChrisMParticipant Melbourne VicVN Calais LS1 View build HERE Member since: August 16, 2017 Posts: 140]

Hi All,

Thank you for your reply, i will look into the digital dakota box.

[ChrisMParticipant Melbourne VicVN Calais LS1 View build HERE Member since: August 16, 2017 Posts: 140]

Hi All,

 

Just an update i have go the speedo to read using the LS1 ecu out put. I just need to check if it is accurate.

[VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 777]

Pretty sure from my poor memory when we did mine the speedo was out a little.  The engineer picked it up and wanted it fixed.  We did it on the dyno, just ran it up to a known speed and I think he just tweaked something in the ECU to correct it.

[gtrboyyParticipant gtrboyy1.6 Getz View build HERE Member since: January 20, 2016 Posts: 201]

For the money bought 2 speedo correctors off ‘festy’ from for sale section of pcmhacking.net recently

 

$80-$90 with ton of adjustability.

 

Tried to link it but didn’t work,can read thread on product of it’s different uses.

 

 

 

 

• This reply was modified 6 years, 6 months ago by  gtrboyy.

[VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 777]

Nice work

[ImmortalityParticipant 97 HSV Senator 185i 02 VX L67 Calais View build HERE Member since: August 31, 2015 Posts: 535]

Or download a GPS app on your phone, go for a drive and then adjust.

[VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 777]

Immortality wrote:

Or download a GPS app on your phone, go for a drive and then adjust.

Is it easy to adjust yourself or do you have to have one of those scan tool thingys?

[ImmortalityParticipant 97 HSV Senator 185i 02 VX L67 Calais View build HERE Member since: August 31, 2015 Posts: 535]

Depends on the PCM.

[gtrboyyParticipant gtrboyy1.6 Getz View build HERE Member since: January 20, 2016 Posts: 201]

If ls ecu & vn speedo are same signal then adjusting that way with gps phone app to check speed will be fine.

 

Assumed signal would be different the way vn-p speedo works.

[ImmortalityParticipant 97 HSV Senator 185i 02 VX L67 Calais View build HERE Member since: August 31, 2015 Posts: 535]

Easiest way VN-VS would be to get a speedo corrector kit.  VT onward you can get the app to modify the dash data to correct the speedometer.

Obviously if you have an LS style PCM and access to HP tuners or the like than it can be done via the PCM.

[StevossParticipant NewyVQP Ute View build HERE Member since: August 27, 2016 Posts: 73]

ChrisM wrote:

Hi All, Just an update i have go the speedo to read using the LS1 ecu out put. I just need to check if it is accurate.

So it did work directly, without the signal converter?

[ChrisMParticipant Melbourne VicVN Calais LS1 View build HERE Member since: August 16, 2017 Posts: 140]

Hi Stevoss, yeah it worked with out a converter. The speedo and tachometer were out. I know the speedo was out by 30kms and efi dynamics corrected them through the ECU.

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