12-13-2010, 07:38 PM
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CC Member
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Join Date: Apr 2008
Location: Melbourne,
VIC
Cobra Make, Engine: Classic Revival CR 3505, LS1, T56 6 Speed, VE 3.45 LSD Rear, 6 Spot AP Fronts, 4 Spot Wilwood Rears
Posts: 1,121
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Not Ranked
I had the same problem and looked at the signal from my LS1 ECU with an Oscilloscope and found it to be a 1 volt peak to peak square wave. I told Howards and they modified my VDO Tacho to suit. Tried the resistor pull up methed and that didnt seem to work.
Not sure about the later ECUs.
Rgds
Gregg
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