How to use a Holley EFI 58x Harness on 24x Engines

By: Tom Kise | 04/08/2019 < Back to Motor Life Home

Follow along as Tom shows us how to properly use a Holley EFI 58x harness on '05-'06 LS2 and other 24x engines. Tom also shows us how to setup the Holley EFI software so it all works. Click here to view our LS EFI Systems.

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