how much flow do the stock cats restrict?

 

I like the sound ooo by the way i only have one high flow cat on right now on the car. the other one is stock. I got one installed and then i noticed that berk technology sent me two right side. So i was too lazy to take the other one back off. So i left it on. My other high flow cat for the left side is coming in tuesday. Maybe it will sound different.

 

Any noticeable gains after the installation of the HFC's? Also did it throw a CEL?

 

Hmmm...that's pretty raspy. I'd like to hear the Berk HFCs with the stock catback. I bet it would only be slightly deeper than stock. Adding aftermarket catbacks to VQs never seems to end well

 

I really don't like that 'bees trapped in a paint can' noise on the 2nd gear shift.

I'd like to hear them with a stock exhaust too... and then stock exhaust with the mufflers removed

Are these the metallic cats?

 

im getting my car dynoed this weekend soo i will post the results when i get it. Cant wait to see the numbers

 

Do you have a before dyno to compare to?


Also, what was the inner diameter of the new HFC pipe and what's the inner diameter of the stock catback / X-pipe?

 

Not my cup of tea, but hey what matters is if YOU like it.

 

The exhaust sounded nice...that is until you hit 2nd gear. From that point on, it sounded like any other riced up civic. Sorry, my good chum.

 

Did you encounter any issues after installing the HF's? Also any noticeable gains or loss?

 

Im getting all new pipping for my exhaust. I have a leak in my exhaust. The people that did it, didn't do a very good job. So im going 2.75" pipping maybe resonators i m not sure yet.....

 

16 posts? Keep it positive or keep lurking.