I don't have that ECU...but I mounted my ECU behind the console on top of the trans tunnel using some vibration isolators.

 

I have installed many aftermarket ECMs, and each is different for various reasons, from connector and harness routing, size, shape, vehicle options or features that get in the way, etc. My general options that tend to work well are velcro strips or wraps, zip ties or Adel clamps (P-clamps) on dash support bars; rare earth magnets to stick to firewall, dash or kick-panel (yours would be too big for that); and Lord mounts (rubber with a stud at each end) or short sections of heater hose for shock-mount, often in combination with the previous methods.

I've had a couple requests to mount in the glove box, back of it, or behind it for access, and gauges or digital AFR output in glove boxes or ashtrays. Also extended loops of harness to allow pulling the operating ECM into view, especially ones with LED indicators or removable data flash cards, or for test probing.

Don't forget to support your harness and wiring well for no stress on connectors. Maybe some of that gives you some ideas once you find all your options for space to put it. One size does definitely not fit all. Have fun!

 

I have the stealth terminator which uses that large ECU on my 69, after a bunch of where under the dash can I stick it and deal with that large connector, I just mounted it in the engine compartment on the drivers side in front of the shock tower…..sorry no pics.

 

What are your options? I am running a PF4 and couldn't extend my harness, so it's on the RH fender apron.

 

The ECU on my PF-4 is mounted unseen on the lower dash rail between the ashtray and the glove box on rubber insulators. Seems happy!

 

The ECU on my PF-4 is mounted unseen on the lower dash rail

How the heck did you get the PF4 harness to mount inside. I see others have as well. Starting to think my PF4 V1.0 has a shorter harness or something. (Shorter main harness, but super extra long O2 harness. hah!)

 

Gen 1 Edelbrock Pro-Flow here….. it’s behind my glovebox on the inside firewall.

 

This is where my PF4 ECU is mounted as well.

 

Thanks For all the tips. I may have gotten ahead of myself. I’m going to layout all wires to familiarize myself first. im an old carb guy. New territory for me. My goal is to hide as mych as I can without making too hard on myself. Got to have goals lol. keep ideas coming and i will post what I end up doing. Thanks again

 

Here’s how one guy did it on his 65, was a stock Ford EFI system, but you’re looking for an ECU mounting option. His was interesting and is documented very well:

http://midnightdsigns.com/Mustang/EFI%20Swap%20-%20Wiring.htm

 

My A9L is stuck up above the kick panel on the passenger side, adjacent to the glove box.

 

I meant the sheer length of the cable, I don't think there is any way I could make it inside the cabin?? I'll have to double check, but if I could, it would just be by inches I'm sure.
(but as I mentioned, the O2 sensor, I could probably reach the tailpipes! )

 

It's small and thin enough that I'd think it would mount easily to the inside rear of the glove box...

 

For many years now we have simply created a false floor on the passenger side, the lid is covered with original carpet and attached with Velcro or small black socket head screw not visible unless you know their position. The lid fits the contour of trans tunnel, floor and side panel .

 

That's clever. The passenger likely never notices the reduced legroom.

 

I can't get the pictures to load, any chance you can try posting them again.

 

I can’t see them either

 

Trying this again,

lid

 

Trying this again,

lid View attachment 932587 View attachment 932588 View attachment 932589

Thank you! Very interesting idea and one I'll have to consider in the future.

 

Pics are back up now,, I don't have pics with the assembly in the car yet as the components are at powder coat, then the carpet guy will carpet the lid, when completed the lid/box is not noticeable.