I've been enjoying the videos, you should do one on ISTA so you can do trouble shooting once you put some miles on the car.

The Cerakote Type C is good for over 1500°F. Still, probably a better and simpler method would be to Skip CeraKote, and just spiral wrap those downpipes with header heatwrap (which is designed for exactly what you’re trying to do). Personally I think a good heatwrap job looks pretty badass. But, if you like the look of the Cerakote, and MUST spray, Harbor Freight sells a $20 mini sandblaster that hooks up to a pancake compressor. I use it for titanium tubes before I Type C Cerakote them. Use 80 grit garnet media (from Kramazon) for a flawless paint prep finish. You can capture the sprayed garnet, and reuse it with the help of a homemade cardboard blast box. Just be sure to soak parts in acetone for at least 20 minutes BEFORE blasting. Wear rubber gloves when handling and hanging cleaned parts. Do NOT slather the Cerakote on. THIN FULL CIATS. If you dust A sprayed part with a heat gun, you can handle it in 15 minutes. Assembly in 24 hours, full cure in 5 days or less. 👍🏼

How much cerakote did you end up using? Looking at doing the same thing myself and wondering if I should buy the 4 or 16oz. How are you liking the catless dps? How’s the sound with stock exhaust?

It’s amazing how CeraKote has managed to duplicate the smell of s well doused urinal puck with their Type C product line.

did they end up staying cooler?

Do you get a lot of smoke out exhaust? I went catless and it smells very bad. Can’t even lower the window while driving. Is this normal? Or maybe something going wrong? I also have a stage 2 tune

Did you try their "CEL delete kit"? I am tuned but as you may know tunes only do a soft delete.

What year is your 550i

How about a reliability vid and the reality if you just take care of the car. Thanks