Hi, i'm about to buy HFC for my car, i'd like to know which one is better and what's the difference between ceramic and metallic HFC.

Thanks.

 

Ceramic is a little quieter than metalic but offers slightly less flow/power as well. The difference is minor. That's the way Tony at FI explained it to me.

 

the difference is small between those two, but how are they compared to stock cats?

do a scale of 1-10 for stock cats/ceramic/metallic
1 being low power/sound - 10 being high power/sound

 

I haven't heard the ceramic cats, so I can't compare. There are plenty of vids out there with metallic HFCs on the stock G exhaust, but I haven't seen or heard of anyone running the ceramic cats yet.

I was on the fence for some time, while trying to decide if I wanted an aftermarket exhaust. The Fast Intentions sale came around and I started to strongly consider the HFCs as well, given the great price.
I pinged Tony and told him that I was concerned about the sound being too much so he offered the ceramics. He said the sound would be slightly quieter but mentioned nothing about power loss. That I got from asking around and from reading a bit.

From the FI site:
400 Cell Ceramic CATS
An upgraded version of the O.E.M. cat, using a honeycomb style brick, which will clean and perform well with being slightly louder than its stock counterpart.

300 Cell Metallic CATS*
A metallic foil wrapped and heat treated for maximum durability. This cat will clean the best out of the two as well as produce even greater performance. Recommended for forced inducted applications.

Tony let me order the exhaust and try it out and if I still wanted the HFCs, he'd honor the sale price to me.
I tried out the FI system and decided against HFCs, so I no longer know what those ceramic cats would sound like.

Anyone out there with them, I'm also curious how they sound... post those vids!