Fast Intentions exhaust is here! (continued)

Originally Posted by Bully

I'm not familiar with FI's processes or actual material specs used on the CF mufflers, but I stayed at a Holiday Inn Express last night. To answer your question, no CF does not deteriorate or warp in icy conditions.

To go a step further, based on the application, my guess is that these mufflers are carbon fiber reinforced ceramics. This is the same type of material used on heat shields of space vehicles. They can handle the frigid temperatures of space and the extremely high temperatures of re-entry through the atmosphere. The ceramic portion of the composite matrix prevents galvanic corrosion between the carbon fiber and stainless steel components of the exhaust. It appears that the muffler is resin coated (smooth glossy clear finish) for anyone worried about mechanical failure due to the difference in the CTE (coefficient of thermal expansion) between the carbon fiber and stainless steel.

Originally Posted by F.I. Inc.

Yes, they are Tony approved! Frank, when I get around to it, I may put your pipes into production. We will call them, "The FP" option.
-Tony

Originally Posted by FPenvy

the muffler "cans" are CF shells with SS ends. most people I talk to about my exhaust think its just some mufflers wrapped in a CF shell.

but as for them holding up I agree with this guy. they are pretty tough. I may not have driven in winter but I've had mine on for about 30K miles prior to removing my mufflers for straight pipes. only marks on mine so far are small chips in the clear coat from rocks. no dents, breaks, cracks, etc...

Originally Posted by Bully

My guess is that the cans are stainless steel wrapped with the composite material which makes the thermal expansion part interesting. I'm sure they cycle tested these things. Easy test would be to just pick them up. If they were just hollow skins, I'm sure they would advertise the weight difference to help justify the $300 difference.

Originally Posted by F.I. Inc.

Yes, they are Tony approved! Frank, when I get around to it, I may put your pipes into production. We will call them, "The FP" option.
-Tony

Originally Posted by FPenvy

actually im pretty positive its just a CF shell capped by SS butt plates.

tony, correct me if i'm wrong please.

Originally Posted by Bully

Sounds right based on what I see now. It's even better than I thought!

Originally Posted by F.I. Inc.

Yes, they are Tony approved! Frank, when I get around to it, I may put your pipes into production. We will call them, "The FP" option.
-Tony

Originally Posted by FPenvy

yea that's where the weight savings comes from. wouldn't imagine them being 5lbs lighter with full SS cans and a CF wrap lol