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?

 

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.

 

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.