Cat bypass pipes

[jdlmodelt]

Has anyone installed Cat bypass pipes? I see the O2 sensors are located at both the intake and outlet sides of the CATs?

[Timco]

Originally Posted by jdlmodelt

Has anyone installed Cat bypass pipes? I see the O2 sensors are located at both the intake and outlet sides of the CATs?

Rear cat bypass pipes?

[jdlmodelt]

Originally Posted by Timco

Rear cat bypass pipes?

Mine is a 99 2.5l is there more than one set?

[Johnny Danger]

Originally Posted by jdlmodelt

Mine is a 99 2.5l is there more than one set?

If you delete the only set of cats on a 2.5, needless to say, the vehicle will be rendered non-emmisions compliant, along with CEL's.

[jdlmodelt]

Originally Posted by Johnny Danger

If you delete the only set of cats on a 2.5, needless to say, the vehicle will be rendered non-emmisions compliant, along with CEL's.

My Honda Civic didn't throw any codes when I tried a bypass. Are you saying the 2.5l will throw codes?

[Johnny Danger]

Originally Posted by jdlmodelt

My Honda Civic didn't throw any codes when I tried a bypass. Are you saying the 2.5l will throw codes?

Since the 2.5 only has one set of cats, unless you remap the ECU, it will not only trigger a CEL, but it will cause the vehicle to fail emissions/inspection.

[healthservices]

Originally Posted by jdlmodelt

My Honda Civic ....

[healthservices]

73 Opel Gt!

[Porsche9]

68 mercury Cougar with 230,000 miles. Needless to say I ended up rebuilding the car. When you are a kid with some skills and little money you work with what you got. Made fats in a straight line but never handled for much even thought I did do some suspension work.