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Old 09-10-2019, 12:10 PM
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HWYSTR455 HWYSTR455 is offline
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Yes, those are roughly copies of the OE controllers which are built into the OE ECUs, hence why it specifies a specific type of GM pump. M

My understanding is that some of the Holley ECMs that are compatible for replacement of OE ECMs actually have the same design as GMs, Like the new Terminator X line.

With those, you also have to closely follow the design of the OE stuff in regards to length, size, etc.

Believe FAST offers an upgrade to the EZ-EFI 2.0 to at least go to multi-point, but probably still better to go to the XFi.


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