Ls1 conversion wiring help needed

[VL400]

Sounds like its working, setup the output rate of the LS1 PCM to match your setup and it might work ok.

[vp304]

Thanks mate not this weekend next il hopefully catch up with my mate and get it all sorted.

[vp304]

Got my mate to adjust the speedo settings on the ls1 ecu today and it works good signal to ls1 computer and the dash works spot on.

Butttt
When I get to 100kph the dash signal goes loopy like the signal isn't strong enought and
It fluctuates from say 100kph drops to like 80 then back to 100 etc etc

Any idea what it is ?
Does the ls1 computer not have enough grunt to run the vp dash speedo?

Do I have to do something like this to the signal going from the ls1 ecu to the vp dash ?
http://lt1swap.com/lsx_tach.htm

[VL400]

Might need to adjust the capacitor value if its still playing up at speed.

[vp304]

1K pullup resistor in it now
what should i try ?



Speedo is perfect smooth dosnt lag up or down. Just that when you get around 90 -100 kph it starts jumping up and down like crazy

[vp304]

Just come back to see if their was a reply yet and im talking about the resistor and

just saw you mention the cap

lol

vl400 what value cap should i try ?