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Old 02-08-2023, 06:57 AM
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Tom Wells Tom Wells is offline
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Join Date: Mar 2000
Location: St. Augustine, FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
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red,

Boy does that take me back! I started with the Commander 20 years ago and fought it for about 5-6 years until Holley came out with the newer digital series.

I now use the Holley HP EFI and it's much better. At one time it was practical to update the ECU to the HP from the Commander; dunno if that is still practical. I removed the old ECU and harness and installed the newer ECU and harness in its place. I kept most of the the prior setup: injectors, throttle body and all the other EFI components. I think I also updated some of the sensors, particularly the O2 sensor from narrow to wideband. It's been a while but it was pretty straightforward...

If you have someone nearby who is up to date on tuning/installing Holley EFI that might be a good way to go. Especially if you have the "multi-port" (read: individual injectors - one per cylinder) EFI.

The update could probably be informed by talking to Holley.

Enjoy!

Tom

PS: Before the EFI I fought several carbs using all the tuning skills available among my expert peers. For years. No joy. Not recommended!
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Last edited by Tom Wells; 02-08-2023 at 07:01 AM..
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