Originally posted by Big Jim:
the ones after the precats but before the main cat. One on each bank.



Doesn't get much easier than that.

This may help gutting pre cats

Downstream bank 2 is at the y pipe, bank 1 is just below the precat at the 90 bend.

1996 2.5LT V6 Contour ATX My Tour+help/info pics E0 rims, Gutted Pre-Cats,CTA Custom Exhaust & Intake, Diablo Chip.