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MS cranking parameters

  • Thread starter Thread starter Mustang5L5
  • Start date Start date May 14, 2026

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,164
17,860
224
Massachusetts
May 14, 2026
#1
  • May 14, 2026
  • #1
QUick question for all you MS users.

During crank, does your RUN condition = Y as well?


Everything i read suggests this should be N until RPM exceeds my crank threshold. However every value i try still gives me a Y during crank.

Is this typical?
 
8

86HO5.0

Active Member
Apr 18, 2023
240
152
53
May 19, 2026
#2
  • May 19, 2026
  • #2
It should be Run: N and green when cranking. Is it datalogging rpm while cranking as well?

What kind of ignition system are you running?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,164
17,860
224
Massachusetts
May 19, 2026
#3
  • May 19, 2026
  • #3
Stock ignition. It's the plug and play MS3 unit so no wiring changes were made. I am logging RPM but no matter what configuration I select it still shows Run:Y during crank.

Engine starts and runs fine..was just an interested observation.
 
8

86HO5.0

Active Member
Apr 18, 2023
240
152
53
May 19, 2026
#4
  • May 19, 2026
  • #4
That is odd. The crank/run threshold should be roughly 200rpm above actual cranking rpm, I'm sure you've tried and verified that setting already.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,164
17,860
224
Massachusetts
May 20, 2026
#5
  • May 20, 2026
  • #5
86HO5.0 said:
That is odd. The crank/run threshold should be roughly 200rpm above actual cranking rpm, I'm sure you've tried and verified that setting already.
Click to expand...


Yup. I've set it to 1500RPM just to see. Cranked it with the fuel pump off and coil wire pulled. Still says Y for RUn when i'm clearly in crank.

Might have to send an email to DIYautotune
 
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