Berk HFC or Berk Test Pipes?

corbin09

I saw that the test pipes have a mech. cel fix. Does this work? Also do you think that the cel fix in addition to some spacers or plug foulers could remedy the cel or is it inevitable? also is the smell unbearable? I had them in my vette and it was pretty bad. I plan on staying with the stock exhaust and possibly a y pipe. I am looking to do these in the near future so any help would be great! thanks in advance

INSURANCE101

so if you get test pipes, there's some sort of leakage possible?

Neo187H

The smell comes from the fact that the exhaust gas hasnt been burnt again in the cat making it cleaner and less smelly. No leaks, just straight out the end of the muffler.

davidyan

The check engine light will come on without the cat as the car has two oxygen sensors, one in front of the cat and one behind it. If the sensor readings are exactly the same from front and back sensor, the ECU knows the cat is gone. Thats the sole purpose of the 2nd 02 sensor.

The first one checks your air/fuel for tuning and performance while the second checks the cat function. This is how its setup on an OBD II or newer (car built 1996, or 1995 can't remember) forward.