Where did you get the information that the rear quarter panel can't be replaced?
Its the outer skin and should just be spot welded on.
https://parts.olathetoyota.com/v-2021-toyota-gr-supra--premium--3-0l-l6-gas/body--quarter-panel-and-components
It is honestly because the shape of the spoiler is not correct to the rear of the car. Try to lay it on the car without the 3M tape and see where there are gaps - you might have to double up the tape in these areas to make it a bit thicker so it adheres without bending.
Not totaled I bet, but will need new outer skin i bet.
This is another reason I will not sink lots of money into my daily driver car - people are just so much more stupid these days and it makes me feel literally sick.
I finally installed mine today.
I used instructions from this thread:
https://www.supramkv.com/threads/radar-detector-laser-jammer-installation.2040/page-4#post-73858
I didn't buy a tape a fuse, I just got a new fuse for the empty 47 slow and wrapped the positive wire around the fuse terminal...
I used the USB Dongle and the Ethernet cable on my phone and that seemed to cause issues.
Will you try flashing the ECU to Stage 1/2 using a laptop now?
It sounds like you were thinking you might have to send it back to Femto?
Not sure why you would give a kid that young a sports car.
Might as well give your toddler a loaded and charged firearm to play with around the house.
I knew many parents who wanted to make their sons happy in high school by buying them sports bikes - they all lowsided at high speeds around...
Hopefully it goes well and we all can learn something from your situation. Just remember, you didn't fail - you discovered something that didn't work and could happen to others, you are a pioneer.
This happened to me - see below:
https://www.supramkv.com/threads/bm3-customrom-is-ready.17785/page-7#post-281914
I ended up using my wifes laptop with BM3 installed on it and the proper connection cable.
I tried using my phone with usb to ethernet adapter and it failed while flashing - car...
I love it - power and sound.
I think the OEM exhaust with this is perfect. No droning on the freeway, but loud when you get on it.
I run every morning and lift weights and I always am so sore and bruised after laying on my back working on cars.....
Bought a Titan Catless Downpipe when I got the car in '21 and finally got around to installing it after getting the car tuned with BM3 CustomROM.
Also, changed the oil for the first time since I bought it new and got rid of the watery oil - oil only had 1800 miles on it and was nasty. I cut the...
When I flashed to BM3 CustomROM stage1 or stage2 this happened to me too.
The car does still burble here and there, but nothing like stock....and I'm catless too.
I think the only time I have spent 3-4 hours detailing a car was when I first get them - polish/jewel/ceramic coat.
About 15 years ago I stopped using a hose completely to wash my cars and use Optimum No Rinse Wash and Wax.
Takes me less than 15 minutes to wash/dry the car now.