midnight_7

i believe i need the precat visible to pass part of my emissions testing.

my precat is gutted, but i want to put a presilencer between the precat and y-pipe. i was thinking the RB presilencer....will this bolt on to the OEM precat?

drft_180sx

If you need the precat visible, im sure they will also look for the main cat. Therefore, I'm not sure how you intend to get a prsilencer, not to mention it won't fit with the precats without custom work.

SO your options are:

1. screw emmisions and get the true dual setup or RB street header to presilencer to y-pipe.

2. if there's no visual, get the precat replacment pipe (rb) and high flow cat (bonez).

3. stock.

midnight_7

sorry..i meant the presilencer will only go on before and after emissions. i was wondering if my hollowed stock precat will fit an RB presilencer.