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PCM Relocation question

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Old Oct 7, 2025 | 09:35 AM
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Default PCM Relocation question

How involved is the process to relocate it to the interior of the car?

I’m relocating the battery to the rear. I have the passenger fender off. Figured it is as good of a time as any to relocate the PCM.
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Old Oct 7, 2025 | 10:26 AM
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Originally Posted by 99FRC Newb
Figured it is as good of a time as any to relocate the PCM.
What do you gain from relocating the PCM ?
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Old Oct 8, 2025 | 07:26 PM
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Originally Posted by lucky131969
What do you gain from relocating the PCM ?
Frees up space for a dry sump tank or UPP-style turbo kit in the future.
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Old Oct 9, 2025 | 08:46 AM
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Should be enough harness to get it in the cabin on the passenger side.
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Old Oct 9, 2025 | 09:53 AM
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Originally Posted by 99FRC Newb
Frees up space for a dry sump tank or UPP-style turbo kit in the future.
Gotcha.
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Old Oct 9, 2025 | 11:31 PM
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It's honestly not too hard. You can easily tuck it up and into the passenger footwell. I'd recommend picking up a seam ripper from Amazon or a local crafts store for like $2 as it makes EASY work of cutting the tape on the wiring looms before you push them through the grommet. Might want to also add some tape to the lip of the grommet hole as the Fiberglass is occasionally sharp.


Here's a link to a 3D Printed PCM Holder as well
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Old Oct 10, 2025 | 04:22 AM
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I like where your head is at. You're in the game here.
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Old Oct 16, 2025 | 01:36 AM
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I moved mine to the passenger footwell to make room for a dry-sump oil tank. It was surprisingly easy, there's an enormous grommet in the perfect place to run the wiring harness back. The biggest drawback is that your passengers lose a couple inches of legroom. It doesn't sound like much but at 6'0" I'm glad I don't have to sit there. Fortunately my wife is 5'6".

If you have a 3D printer (or a friend with a printer) you can use my bracket: https://www.thingiverse.com/thing:7045026

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Old Oct 16, 2025 | 12:44 PM
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If you don't mind, I added your file to the growing 3D objects thread.
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Old Oct 16, 2025 | 04:12 PM
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Sounds great. I hadn't seen that thread before, thanks for letting me know it exists. Now I have some reading to do.

(I have mostly just been lurking in the track and tuning subforums.)
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Old Oct 16, 2025 | 04:32 PM
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If you seek track chatter, absolutely find your way to FaceBook and the Corvette Track Enthusiasts page. Endless mods, parts, setup info.
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Old Oct 16, 2025 | 06:17 PM
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I'm already there.
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Old Oct 20, 2025 | 10:05 AM
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Originally Posted by NSFW
I moved mine to the passenger footwell to make room for a dry-sump oil tank. It was surprisingly easy, there's an enormous grommet in the perfect place to run the wiring harness back. The biggest drawback is that your passengers lose a couple inches of legroom. It doesn't sound like much but at 6'0" I'm glad I don't have to sit there. Fortunately my wife is 5'6".

If you have a 3D printer (or a friend with a printer) you can use my bracket: https://www.thingiverse.com/thing:7045026
Did you just put the PCM right on the carpeted kick panel in the footwell? I was thinking of hiding it, but I like this idea with your bracket. Its less clunky than the OE bracket.
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Old Oct 21, 2025 | 12:38 AM
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Yes, it's bolted to the kick panel, and so is the TAC. I put another panel (actually a slightly trimmed cutting board) over them, and then put the floor mat back. Aesthetically it's all good, but I still need to make a spacer or standoff or something to hold the cutting board off of the PCM and TAC.

I used t-nuts on the pack of the kick panel, but I'm not sure that's the best idea. The kick panel plastic is a lot harder than I thought, so the t-nut prongs mostly just bent themselves flat. It works, I just had higher hopes. Riv-nuts might work better, but then the risk is that they don't bite and end up spinning.
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Old Oct 21, 2025 | 10:26 PM
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From: Erwin, NC
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Originally Posted by NSFW
I moved mine to the passenger footwell to make room for a dry-sump oil tank. It was surprisingly easy, there's an enormous grommet in the perfect place to run the wiring harness back. The biggest drawback is that your passengers lose a couple inches of legroom. It doesn't sound like much but at 6'0" I'm glad I don't have to sit there. Fortunately my wife is 5'6".

If you have a 3D printer (or a friend with a printer) you can use my bracket: https://www.thingiverse.com/thing:7045026
Thank you! My friend had a 3D printer. I’ll ask him to make it for me.
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