tach input -- msI vs msII
Moderators: jsmcortina, muythaibxr
tach input -- msI vs msII
is there a difference in the way hall sensor tach input is implemented in msI and msII? i have a working msI installed for 1-1/2 year sharing the oem hall sensor between oem ign and msI fueling. i am trying to get my msII installed using the same setup. tach input does not seem to be reliable. msII is jumpered for hall input. this is on a 440 dodge. trying to get fuel only working for now. am i going to be able to share oem hall with msII? thks jimk
lance, thanks for the reply. in my setup/jumpers i have the following.
del and not jumper c12 and c30
jumper d1 and d2
ign setup jumpers
s12c -- js9, igbtin -- js10, igbtout -- ign, optoin -- tach select, xg1 -- xg2, tsel -- optoout, u3 is installed correctly, running 2.34 code, next pulse range 25 -- 70.
sorry i do not have a data log.
the ign seemed to be very random. really bad kickback and backfires.
broke snout off starter, but that is now fixed. still runs great on msI. do i need a pullup resistor in msII to share oem hall signal? i want to run fuel only for now. thks jimk -- latest info. i installed a 1k pullup to 12v and the truck started and ran decently. while it was running i touched db37 pin 36 to coil neg. all stopped and looks like inj 2 fouled up. i need to investigate further as it looks ok on the stim. w/ msI static hall v is 3.54vdc and w/msII static voltage is 2.3vdc. w/pullup msII hall v is 4.7vdc. (w/just ign turned on) thks again jimk, --- update 3/14 -- msII runs w/fuel & ign. not well, but it runs. now to the tuneing and install of my lc1, thks jimk
del and not jumper c12 and c30
jumper d1 and d2
ign setup jumpers
s12c -- js9, igbtin -- js10, igbtout -- ign, optoin -- tach select, xg1 -- xg2, tsel -- optoout, u3 is installed correctly, running 2.34 code, next pulse range 25 -- 70.
sorry i do not have a data log.
the ign seemed to be very random. really bad kickback and backfires.
broke snout off starter, but that is now fixed. still runs great on msI. do i need a pullup resistor in msII to share oem hall signal? i want to run fuel only for now. thks jimk -- latest info. i installed a 1k pullup to 12v and the truck started and ran decently. while it was running i touched db37 pin 36 to coil neg. all stopped and looks like inj 2 fouled up. i need to investigate further as it looks ok on the stim. w/ msI static hall v is 3.54vdc and w/msII static voltage is 2.3vdc. w/pullup msII hall v is 4.7vdc. (w/just ign turned on) thks again jimk, --- update 3/14 -- msII runs w/fuel & ign. not well, but it runs. now to the tuneing and install of my lc1, thks jimk