im doing a cat delete this weekend on my 85 GSLSE but i just checked under the car and im kinda confused on which one is the cat... im assuming its the first two things after the header, but im not sure, can some one help please

 

there are 3 cats. the first two are precats and the las is the main cat. if you got the RB cat replacement then you replace all 3. just unbolt and take them off. then bolt in the new one.

 

all 3 are? **** i need more tubing then, thanks bud

 

Rotaries make polution... add more cats to offset problem.

Least that's how mazda approached it in the 80's