This Monday I'm going to have Stillen HFC's installed. I already have the Stillen exhaust and intakes. I won't be able to Dyno the car at that time but I'll post up how the car runs.

 

So it seems like FI's and Berk's HFCs are fairly similar, since they both use Magnaflow/Carsound units. Anybody know how the Stillen one is different from those two?

 

I had my Stillen HFC's put on at the shop right next to Berk's. I looked at both and compared the two. The material looks similar. Berk's was shinnier. Berk's comes with a gasket to fit the HFC's. Stillen's HFC's dont need the gasket because they directly match the stock one. The guy at Berk's said all the companies use the same material for the inside of the HFC's. Seems like you cant go wrong with either company.

 

You have a reason to bash stillen... so your opinion is biased...

 

Interesting comparison info. Thanks, man. Looks like pretty much every company uses Carsound/Magnaflow metallic cats. Do the Berk HFCs have that stamp that says "Legal for racing vehicles only which may never be used upon a highway." like the Stillen ones do?

 

^ not that i remember

 

Berks doesnt have that label.