This is just a quick reference post, as someone may need this info (now or in the future).
Many Buick Grand Nationals, Turbo T’s, & Regal Limiteds have already been modified with aftermarket computer chips (like TurboTweak, Extender units, etc.).
So you may not even know what an original factory computer chip looks like.
Or it’s been ages since you’ve replaced yours and you forgot what they are.
For the benefit of new owners, and others who’d like to see it, it is shown below.
This would be the correct stock ECM chip for a 1987 Buick Turbo Regal (any variety).
The Delco part number on the box: 16178707
GR3.670 EPROM – ECM, 0211H2
The top of the chip: DELCO BBKJ 9464
(also contains other numbers below that, but you need to remove the chip from the carrier to read them)
(BBKJ is the important code)
The bottom of the chip has no info on it.
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