The BNKM.bin file uses injector flow, not BPW.

A very crude way to "tune" timing is to add or subtract a couple degrees with base timing. For example, instead of setting base timing to ZERO...

Acceleration Enrichment = Pump Shot

BNKM is $31, see attached.

BJLY is $OD which is for the 4L60E.

$OE and $31 are for the 4L80E.

It should be OK to use BNKM with the 16197427 PCM.

dave w

What is the stock chip set number? There is a good chance that I can post it.

dave w

Seems very odd to me that $OD works but $OE / $31 won't.

The attached $OE / $31 files worked for me.

dave w