blew as in...all the metal shreddings/stuffing thats in a high-flow cat got shoved to one side causing ther to be a plug in my pipeing. when my tuner saw it he was shocked to see it all backed up.
I dont think this high flow cat was designed for high boosted vehicles. but still works great for N/A

 

random technology sucks. i had one on my 07 Si and it barely did anything. and it gave it this annoying whistling sound cuz the outlet went back down 2 2 inches like the factory one dose. save your money and your time. the berk tech cat is a good product. i don't have any complaints at all. and it barely made the car louder and i got the skunk 2 exhaust its pretty much the loudest i have had on any car. i'm sure a single 70mm is louder but i have never gotten so many complaints even from ppl that like loud cars i get complaints that its 2 loud inside!

 

mine had the smell for a few days up to a week. i also reset the ecu. so, i'd say it just has to break in a bit and some of it is the ecu self correcting for the different flow characteristics...

 

omg this is an older thread, i already posted on this thing before hand...

 

Yeah, the smell is not as bad as a test pipe, but it is noticeable expecially when i pull in the garage and shut of the engine. Hopefully it will pass inspection.

Plus, I have one of those sensitive O2 sensor. I'll be putting on another anti fouler adapter today (have one already and still get a CEL).

 

I have used it and compared to a TP it's nothing, works very well. I am turbo started off with the berk HFC, then used a 3" tp and now I have the berk back on cause I did emmsions. I will have mine up for sale very soon. PM me if you are intrested, it's still on my car now but I will be putting my TP back on. The TP however stinks pretty bad.