service code P432 ?Need help.

[GASDOC]

Just hooked up my OBD II scanner to my 2001 GTS with a check engine light and got the P 432 trouble code.What is it?
I have BTR intake,Bellanger headers,high flow cats and mufflers,1000 miles before the dreaded light.Any help would be appreciated.

 

[RickV2K]

1/2 catalytic converter efficiency.........catalyst 2/1 efficency below required level.

 

[Viper Wizard]

gasdoc,Powertrain Diagnostic Procedures #81-699-99068
2000 Roadster&Coupe-page 99 you need the book!