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VSS noise

 
Old 07-05-2013, 08:59 PM
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Default VSS noise

So I just re-wired my EMS4 to include VSS from the 94 stock system. I used a 2.2k pullup resistor off the same 12v line that the 1k ohm tach pullup resistor uses. He's the issue, the AEM numbers were off by like 2 orders of magnitude for speed, would go straight to 255mph as soon as i let out the clutch in 1st. So I reduced them until I could get 10mph on the speedo and 10 on the computer. But if I go to like 20 it'll jump between 10 and 60. This tells me that I have a **** load of consistnat noise at 10, but the noise gets noisier above that. I have filtering and smoothing turned on, smoothing really doesnt seem to make much of a difference. Do I need a low pass filter like the crank and cam signals for this one too? And I'm guessing it should happen between the ecu and the pullup.
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Old 07-12-2013, 03:32 PM
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Anyone? I'd like to get it working for august 10th when I have my last event this year where I can run launch control. I guess technically if I set my launch control to disable over 8mph I'll be ok.
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