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No tach signal, msd streetfire chevy 350
Posted: Sun Mar 11, 2012 2:00 pm
by 81k5
hey guys new to forum
im installing microsquirt on my chevy 350, controlling fuel only. having problems getting tach signal from coil negative. dash tach is working, but nothing on tunerstudioms.
wiring is grey/red to coil negative,grey/black to 12v power source as per manual. any help would be much appreciated. thanks
Re: No tach signal, msd streetfire chevy 350
Posted: Mon Mar 12, 2012 5:36 am
by Matt Cramer
This could be a settings issue. Please post your MSQ.
Re: No tach signal, msd streetfire chevy 350
Posted: Mon Mar 12, 2012 2:12 pm
by dontz125
If adjusting the settings doesn't work, try
this coil -ve circuit.
Re: No tach signal, msd streetfire chevy 350
Posted: Mon Mar 12, 2012 2:17 pm
by 81k5
im really new to this whole thing, how do i go about finding this MSQ?
Re: No tach signal, msd streetfire chevy 350
Posted: Mon Mar 12, 2012 6:37 pm
by dontz125
The tune file read by MegaTune or TunerStudio has a .msq extension.
Re: No tach signal, msd streetfire chevy 350
Posted: Tue Mar 13, 2012 10:21 am
by 81k5
i believe this is the file correct? i had my brother start doing the tuning while i was in camp but stopped when we didn't receive a tach signal.
Re: No tach signal, msd streetfire chevy 350
Posted: Wed Mar 14, 2012 4:21 am
by Matt Cramer
I don't see any obvious RPM killers. What exactly are you using for ignition? There's a couple different MSD Streetfire components that could be used on a Chevy 350.
Re: No tach signal, msd streetfire chevy 350
Posted: Wed Mar 14, 2012 11:48 am
by 81k5
just the HEI distributor everything else is stock.
Re: No tach signal, msd streetfire chevy 350
Posted: Thu Mar 15, 2012 4:36 am
by Matt Cramer
4, 7, or 8 pin HEI?
Are you using a CDI box as well?
Re: No tach signal, msd streetfire chevy 350
Posted: Fri Mar 16, 2012 10:19 am
by 81k5
4 pin hei, no cdi box that I know of.