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      04-23-2020, 10:40 AM   #1
F1FL
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Any experience removing rear diffusers?

I'm looking to remove my rear diffuser put on by a previous owner. Does anyone have experience doing so? What should I expect?

I'm a little worried something more permanent was used to affix it. Any thoughts are appreciated!
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      04-23-2020, 10:43 AM   #2
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Remove any bolts/screws, then apply some heat with a heat gun (on a low to mid setting), or a hair dryer. Pull downwards with force, but not in a jerky fashion, and it should start peeling away.
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      04-23-2020, 11:38 AM   #3
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if it's only held on by 3M or similar tape, once the bolts are out, I had great success with fishing line (from the wonder of youtube) to remove my spoiler with no paint damage. Just pull gently from one end with the line through the joint.
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      04-23-2020, 12:16 PM   #4
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As said above, remove any hardware and then try to use fishing line or floss to separate the diffuser from the 3M tape. Don't pull on the diffuser because you could pull away paint from your bumper. Although the piece is only held on by tape, the tape is strong and if a lot was used it will have a firm grip on your bumper. I recently removed my front splitters and got impatient. I pulled on one them and the 3M tape pulled away a chip of paint from the underside of the bumper.
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      04-23-2020, 12:28 PM   #5
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Quote:
Originally Posted by RedScytheM3 View Post
As said above, remove any hardware and then try to use fishing line or floss to separate the diffuser from the 3M tape. Don't pull on the diffuser because you could pull away paint from your bumper. Although the piece is only held on by tape, the tape is strong and if a lot was used it will have a firm grip on your bumper. I recently removed my front splitters and got impatient. I pulled on one them and the 3M tape pulled away a chip of paint from the underside of the bumper.
Yeah, that's why I used head to remove mine. It softens the tape to allow it to peel more evenly.
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      04-23-2020, 04:23 PM   #6
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The proper way to install a diffuser, or other parts like a trunk lip spoiler are with betalink (body glue). Is there a slight gap between the bumper cover and the diffuser? If there isn't and it's completely flush, it may be glued on.
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      04-23-2020, 04:29 PM   #7
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Quote:
Originally Posted by e90m3808 View Post
The proper way to install a diffuser, or other parts like a trunk lip spoiler are with betalink (body glue). Is there a slight gap between the bumper cover and the diffuser? If there isn't and it's completely flush, it may be glued on.
Maybe an OEM part, but most of these aftermarket diffusers are using 3m double sided tape.
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      08-13-2020, 10:06 AM   #8
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So I've tried heat gun, fishing wire, 3m adhesive remover... no luck so far.

I can feel towards the rear that there is double sided tape that is loose when it is heated up, but where the diffuser is attached closer to the mufflers is completely solid even after heating it. Hoping it's not betalink
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      08-14-2020, 01:40 AM   #9
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Tried removing mine at a local shop that does great work. They tried to remove mine, and were not comfortable going further. We believe that high heat melted the 3M VHB tape on very strongly and trying to remove it looked like it would have stripped paint.
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      08-14-2020, 01:44 AM   #10
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Your best off cutting with a bit of fishing line.. the floss will break. Heat won't touch it, steam will help. They'll be a little clear coat damage in spots that'll require a little sanding with a high grit and polish but it's out of eye site mostly..
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