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How to Build a GM EFI system, an excellent primer on EFI parameters 2026-06-25

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Reviews 5.00 star(s) 1 reviews

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Richard RV
53 pages! Lots of detail, lots to learn.

The last page has this:
"APPENDIX C - HOW TO ADJUST AND TROUBLESHOOT GM EFI
Soon to be available at www.customefis.com!!"

The troubleshooting appendix would be incredibly useful, but unfortunately it's no longer there and just brings you to mold remediation info.
RF_Burns
RF_Burns
Yes, unfortunately Custom EFI closed quite a number of years ago.
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