95wagon
December 20th, 2014, 10:59 AM
Long story short , I have an LS7 with GMPP E67
My 1996 Impala cluster works fine with it using a pull up resistor on the tach line .
In my quest to get ECM controlled A/C and cruise I am mucking with a 2007 TBSS cal in a separate E67 ECU
When I run the car with the TBSS cal, the tach does not work .
The pull up is buried in the dash and not simple to access ( or I would just yank it to see)
From what I can see in wiring diagrams, I think both cals use the same tach output terminal
Has any one seen different cals needing and not needing pull up - pull down - or nothing?
The tach settings look t be the same in , EFI LIve , HP tuners and TunerCat .
Because of plus-minus in the different programs, I do have both ECMs licenced in all 3
Thanks for any input
Gerry
My 1996 Impala cluster works fine with it using a pull up resistor on the tach line .
In my quest to get ECM controlled A/C and cruise I am mucking with a 2007 TBSS cal in a separate E67 ECU
When I run the car with the TBSS cal, the tach does not work .
The pull up is buried in the dash and not simple to access ( or I would just yank it to see)
From what I can see in wiring diagrams, I think both cals use the same tach output terminal
Has any one seen different cals needing and not needing pull up - pull down - or nothing?
The tach settings look t be the same in , EFI LIve , HP tuners and TunerCat .
Because of plus-minus in the different programs, I do have both ECMs licenced in all 3
Thanks for any input
Gerry