 Tach signal and EFI, Megasquirters and Subaru converters please read... |
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| falcor75 |
 Jul 25 2016, 01:39 AM
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Senior Member  Group: Members Posts: 1,579 Joined: 22-November 12 From: Sweden Member No.: 15,176 Region Association: Scandinavia 
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I'm running my 2.0 four cylinder with an aftermarket ECU.
In the settings for the tach signal I've selected 12v, 50% duty and this worked fine for a few months of testing.  The day before my dyno session the tach started behaving wierdly. It would start up fine but after a little bit of running it would settle between 3k-4k rpm. Revving the engine would momentarily get it back to normal but after a few seconds at constant rpm it would return to its new favorite position. Any ideas what could be causing this? |
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Posts in this topic
falcor75 Tach signal and EFI Jul 25 2016, 01:39 AM
Series9
I'm running my 2.0 four cylinder with an afte... Jul 25 2016, 06:52 AM McMark :agree: except about the Autometer Tach. Works bu... Jul 25 2016, 06:59 AM falcor75 Yeah I want to use the orginal tach. Anyone know ... Jul 25 2016, 07:18 AM
JamesM
Yeah I want to use the orginal tach. Anyone know... Jul 26 2016, 12:27 AM JamesM
Yeah I want to use the orginal tach. Anyone kno... Jul 26 2016, 10:06 AM timothy_nd28 Google pull up resistor Jul 25 2016, 09:23 AM 914forme
Google pull up resistor
:agree: or read Timoth... Jul 25 2016, 11:22 AM Dtjaden Although I built my own here is a commercial optio... Jul 25 2016, 09:45 AM McMark http://www.jegs.com/i/MSD-Ignition/121/8920/10002/... Jul 25 2016, 11:04 AM stugray Where are you grabbing the tach signal?
If it is ... Jul 25 2016, 12:54 PM falcor75 The signal is on a dedicated tach output from the ... Jul 25 2016, 02:19 PM stugray
The signal is on a dedicated tach output from the... Jul 25 2016, 02:30 PM falcor75
The signal is on a dedicated tach output from th... Jul 26 2016, 12:00 AM mjrrti [size=5]I am using a cool adapter called tach ada... Jul 26 2016, 12:35 AM falcor75 Did some testing today...
First i borrowed an Aut... Jul 27 2016, 08:45 AM Series9
Did some testing today...
First i borrowed an Au... Jul 27 2016, 12:46 PM Series9 Is this really that different from a stock tach?
... Jul 27 2016, 12:52 PM falcor75
Is this really that different from a stock tach?
... Jul 27 2016, 02:35 PM Series9 I bet North Hollywood or Palo Alto Speedometer can... Jul 28 2016, 07:55 AM  |
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