So I originally installed just the DH valance myself with the prospect of getting the axle back later. I didn't remove the entire bumper when I installed it. The dealer did this installation.
I have the Sport, and it's only barely louder than it was. I do have an H-pipe as well.
After all this time, I finally got the Ford Performance Sport axle back installed. I don't know if there was a pricing error, but it was listed for under 1k. Absolutely could not pass that up. Also came with the DH valance and diffuser.
It's just a bumper guard that sticks to the underside. You just peel off the lining and stick it on. Their CF splitter has more room for them to stick to than the plastic one, so you'll be fine. Sliplo is the name brand, but there are plenty of cheaper alternatives that work the same way. The...
Working against the exhaust was such a pain. The three screws on each side took the longest time. Definitely not as much space as I thought there would be. The two middle tabs were also a headache.
Finally got the DH rear valance installed. Big thanks to @86pagt for squaring me away. Took about three hours doing it solo in my driveway. 100% worth it.
Good lord. No, nothing like that. I'll bring it to a dealer sometime this week. Maybe the transition from cold to warm weather has something to do with it. It just seems like whatever adhesive was there is gone.
While browsing a post on exhausts, I noticed that many of these kits come with a DH valance/diffuser.
See here
They say it fits the 24-25 GT coupe/ convertible. Kind of makes me wonder if the DH valance really does fit a GT. I'm half tempted to just order one and find out the hard way...
This one from Auto Addict would be perfect if it wasn't CF:
https://autoaddictusa.com/products/2024-ford-mustang-s650-type-gt5-gloss-carbon-fiber-rear-diffuser
Great company to work with, however, I did lose my front splitter extension when the snow came through Texas a few weeks ago. It was the poly version so it was probably brittle from being out in the cold. Never went above 40 mph and hit something somewhere, because I didn't realize it had broken...