I have a custom downpipe that mates to the stock cat and the Apex-i N1 dual that's supposed to bolt on to the stock cat. My question is the following. Can I use the Racing Beat silencer in place of the stock cat? Will everything bolt in? Is there anything else I can use? I know I can use a muffler as a midpipe, but is there anything that bolts in?
Thanks

 

I don't think the RB pre-silencer is a direct replacement for the stock cat.I think it may be longer(not sure).I think is is only bolt in with thier Down pipe or header.

 

its longer.

 

 

damn it makes any exhaust sound good though.

 

..... its not longer, where did you come up with that, i had one in place of my stock cat on my 86 sport when i had it...

 

jack the car up and measure from bolt to bolt to see it the holes line up at least some what. and make sure its the right diameter then measure the length.

 

no it shouldnt be longer, i had the RB down pipe and with the presilencer to the stock y-pipe on my tii and it was fine couldnt hear my exhaust at all, i just put on a JDM mazda speed exhaust from the presilencer back and its sounds pimp not to loud but has a nice deep humm... so im prety sure its the same length as the stock cats

 

well i guess its only longer on the n/a then.

 

I think I'm just going to buy the Racing Beat downpipe and the presilencer so that everything will bolt in.
Thanks for your help.

 

Yes it is longer. Stock cat 17.5", RB presilencer 20"

I even emailed RB to ask them and they said it would not fit in place of the stock cat, catback, and same lengthed downpipe without having to chop some length off somewhere.

 

hmmm, mine mustve been a weird one then, if thats the case, mine fit directly in place of my stock cat, no problems at all

 

How do I know its longer? I used to have the RB downpipe and presilencer. It will bolt on to the stock cat only if you use the RB downpipe. And of course we are talking about the 2.5" downpipe and presilencer.