Kooks Hi Flow Cats on Xpipe?

[tached_out]

I all ready have the set up. Kooks LT's with there Catted X Pipe.

I know that you should never run leaded fuel through cat's but when I look at these cats there really is nothing to them. Can the kooks system handle leaded and be fine.

Also I have heard people running C16 through cats and be fine. My car is all ready to loud and removing the cats even though they are hi flow and probably do nothing I wouldnt want it to be any louder.

any one have any experience on this?

 

[racevert]

I have the 3" Kooks catted X-pipe. I run 100 octane unleaded only. Your O2 sensors will be probably get fouled from using leaded race gas. I fouled my rears from using leaded race fuel two times.