SD20B vs SD44B hardware differences

Anything not covered in the other forums.
wwhite
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Joined: 2021 Feb 16, 15:53
Location: Victoria, BC, Canada
Vehicle Information: 1994 Flarside, XLT, 351w E4OD
SD48b, Quarter Horse, Burn2

SD20B vs SD44B hardware differences

Unread post by wwhite »

What is the differences between these hardware?
Both can run 4, 6, and 8 cylinder.
Is one auto and the other manual trans?
decipha
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Re: SD20B vs SD44B hardware differences

Unread post by decipha »

the difference is the bidi port mapping, i.e. the hardware is different
wwhite
Posts: 313
Joined: 2021 Feb 16, 15:53
Location: Victoria, BC, Canada
Vehicle Information: 1994 Flarside, XLT, 351w E4OD
SD48b, Quarter Horse, Burn2

Re: SD20B vs SD44B hardware differences

Unread post by wwhite »

Is the wiring the same, the 60-pin plug pinout?

If BIDI means Bi-Directional port mapping, then the pinouts are different?

Is there a cross reference or wiring schematics for each someone could link me to?
decipha
Posts: 4956
Joined: 2021 Feb 15, 12:23
Location: Metairie, LA
Vehicle Information: Work Truck
'19 F-150 3.3L

Re: SD20B vs SD44B hardware differences

Unread post by decipha »

Ive never compared them but most probably so as most all ecus follow similar if not the same pin out.

I cant imagine more than a couple pins being different if any

LMK what you find

No, bidi port mapping is for assigning registers to hardware at the code level, it may not have any affect on the pin # at the connector as thats just wiring
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