Catalytic Converter
08-12-2013, 11:52 AM
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Catalytic Converter
I have this VERY irritating rattle at idle and below 2k rpms. It's coming from the middle of the exhaust by the cat so I figured it's probably shot (as is the rest of my exhaust, the end of the muffler is rusted out as well). I've been told by DC that it's illegal to sell used cats (I think, maybe I misunderstood?). So, I guess I need a new one and have it welded on. Since I'm in there and all, is there a high flow cat that yall recommend that would bump up the power even a little? I don't want to change the sound because I love the S2's deep rumble. Since I do a lot of highway driving I'm kinda turned off towards the test pipe, not sure how that would change the sound. Any suggestions?
08-12-2013, 12:59 PM
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08-13-2013, 01:35 AM
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08-15-2013, 05:35 PM
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test pipe vs SLP = horrible vs epic
video (somewhat close to the actual sound)
https://rennlist.com/forums/924-931-...-heaven-4.html
Butters snapped a photo of his setup;
Well, I went ahead and did up Odur's exhaust on my 944. Louder than I wanted it but I LOVE IT!
Went with the SLP resonator, 2.5" pipes all the way, with a 14" flow-through knockoff-magnaflow muffler in back. Total $ for entire project including having it all welded up at an exhaust shop: $300. Not bad, eh?
Went with the SLP resonator, 2.5" pipes all the way, with a 14" flow-through knockoff-magnaflow muffler in back. Total $ for entire project including having it all welded up at an exhaust shop: $300. Not bad, eh?
oh, and srsly, does anybody run a cat anymore?
.
Last edited by odurandina; 08-15-2013 at 05:59 PM.
08-15-2013, 07:51 PM
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https://rennlist.com/forums/924-931-...-heaven-3.html
test pipe vs SLP = horrible vs epic
video (somewhat close to the actual sound)
https://rennlist.com/forums/924-931-...-heaven-4.html
Butters snapped a photo of his setup;
oh, and srsly, does anybody run a cat anymore?
.
08-15-2013, 08:22 PM
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run a the SLP near the front in place of the cat,
then an 18X8X5 inch magnaflow back there (a bump up in size from Butters'.
but build it like how Butters has his system set up.
the sound it will make on the highway will be soooo good, you'll never want to play the music.
then an 18X8X5 inch magnaflow back there (a bump up in size from Butters'.
but build it like how Butters has his system set up.
the sound it will make on the highway will be soooo good, you'll never want to play the music.
08-15-2013, 08:44 PM
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run a the SLP near the front in place of the cat,
then an 18X8X5 inch magnaflow back there (a bump up in size from Butters'.
but build it like how Butters has his system set up.
the sound it will make on the highway will be soooo good, you'll never want to play the music.
then an 18X8X5 inch magnaflow back there (a bump up in size from Butters'.
but build it like how Butters has his system set up.
the sound it will make on the highway will be soooo good, you'll never want to play the music.
08-15-2013, 09:07 PM
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the SLP cleans up the sound, but as it is completely hollow, it doesn't suppress the noise as much as a full-sized 14X5 or 18X5 inch glasspack resonator would do.... so don't run the SLP... run a full glasspack like the one shown below.
and still run the large muffler (everyone makes the mistake of running too small mufflers).
these things aren't very heavy, so there's not much of a problem with weight.
then you'll have a semi-exotic sound that's not be too loud.
these would also be really nice set up for an S2 or 968 and make good power....
.
and still run the large muffler (everyone makes the mistake of running too small mufflers).
these things aren't very heavy, so there's not much of a problem with weight.
then you'll have a semi-exotic sound that's not be too loud.
these would also be really nice set up for an S2 or 968 and make good power....
.
