djantlive Report post Posted April 11, 2016 Are Diablo secondary cats interchangeable between 91 and 2001? The part numbers are different and from what I gathered there are 3 different versions. This is for secondary cats, as early Diablo do not have primary cats. Quote Share this post Link to post Share on other sites More sharing options...
djantlive Report post Posted April 11, 2016 Where are my Diablo experts? Quote Share this post Link to post Share on other sites More sharing options...
whiteout Report post Posted April 12, 2016 They are likely different materials inside, but I'm willing to bet they both fit. '91-'95 might not have a secondary o2 bung. Quote Share this post Link to post Share on other sites More sharing options...
djantlive Report post Posted April 12, 2016 Thank Whiteout. I can plug the 02 port. But need to know if the flange bolt together Quote Share this post Link to post Share on other sites More sharing options...
whiteout Report post Posted April 12, 2016 later cars are v-band at the primary pipe and 3 bolt flange at the secondary cat pipe. Quote Share this post Link to post Share on other sites More sharing options...
Hi-Tech Report post Posted April 21, 2016 Are Diablo secondary cats interchangeable between 91 and 2001? The part numbers are different and from what I gathered there are 3 different versions. This is for secondary cats, as early Diablo do not have primary cats. The cats should be different because 91-95 came with 2 cats and 96-2001(actually 95.5) came with 4 cats, 2 primary and 2 secondary. The 91-95 should be a little bit longer than a 96-2001 primary cats. Quote Share this post Link to post Share on other sites More sharing options...
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