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MZ3 SBC MZ3 SBC is offline
1979 930 @outlaw3.4
 
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Join Date: Sep 2014
Location: Northern NJ
Posts: 317
Garage
I disconnected the MSD switch. Now the logger sees the RPM signaland the TACH works.

so that leaves me with
A. RPM Switch Box is defective ? but it does work as it is suppose
B. The tach wire can not drive tach, MSD and gauge.

I did notice the volatage went from 1.8v to 2.4v at tach when I discconnected the MSD from the tach wire.
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1979 930 3.4l Peter Dawe Motor, Bosch Twin Plug, Dual Bosch CDI, J&S Ignition Control, Webcam 158 , Maxed Flowtech Fuel Head, BL Adj WUR, Braided Fuel Lines, 009 Injectors, GT35R, TIAL .7with Turbosmart MBC, Fabspeed Long Neck IC, Fabspeed Headers, GT3 Style Pipe off turbo, Rennshift Short Shift, KEP Clutch Package, 8.41, Elephant Racing Suspension, Weltmeister Sway Bars, ??WHP, Innovate MTS Gauges, RPM, Switch,SplitSecondAIC 7th
Old 03-15-2022, 11:07 AM
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