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08-27-2012, 04:37 PM | #45 | |
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Just had the same exact thing done to my car. Sounds really aggressive with the oem mod! |
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04-27-2013, 08:12 PM | #48 |
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05-09-2013, 12:34 PM | #49 |
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OP: First awesome write-up!
I plan to do the same thing and wanted to ask you a few things: a) What rear muffler are you running? b) IF stock how much increased sound did you get by removing the secondary cats and do you think you gained any power? c) I'm debating right now to gut the cats or just cut them out since I'm not too worried about the visual part. Would the final effect be the same? d) If you are running an aftermarket rear muffler, what brand and how's your sound before and after gutting the secondary cats? Kudos great job, I want to try this before spending $2k+ on a pipe as I prefer to dump that into my Brembo's
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05-09-2013, 12:43 PM | #50 | |
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One more question, have you thought of removing the OEM resonators as well or would that trip the CEL? I guess I'll do one at a time to get the sound I want but wondering if anyone has removed the secondary cats + resonators on a stock X-pipe?
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05-09-2013, 12:46 PM | #51 | |
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If you don't want to spend $2k+ on a pipe, may I suggest Test Pipes to remove the primary? ~$400 plus some way of removing CEL if that annoys you (couple different ways of doing this with the Tune being the most expensive.) Just point the thought in your head if you didn't already have it!! |
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05-13-2013, 01:05 PM | #52 |
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thanks!
I'm getting my work done tomorrow and will report back
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02-08-2014, 12:15 AM | #54 |
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I think this mod would be a great addition to the OEM exhaust mod.....our cars are way to quiet in stock form, so actually being able to hear this amazing V8 sound come from a completely stock looking exhaust is really cool! By doing this mod in combination with your OEM exhaust mod, it will probably make the car sound more like an exotic. I have now lived with this mod for a few years and still never regret doing it, in fact it's still one of my most favorite mods that I've done.
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02-08-2014, 11:34 AM | #55 | |
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02-17-2014, 02:42 PM | #56 | |
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can you just get by with simply wire up o2 simulator? I know old e46 I had worked .. but I havent tried or anything on new one..
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02-18-2014, 07:04 AM | #57 | |
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All that being said, if you are eliminating the primary cats, the best is to get a tune and extract the extra power and get the other benefits of the tune. |
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04-08-2014, 05:07 PM | #58 |
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i know this was from 3 years ago but i still wanna ask...ive heard that deleting the secondary cats will cause u to fail emissions im in nj and pretty sure they just do a OBD port test but not sure...is this true because i want to do this also if i get secondary cat delete pipes will that cause a cel
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04-08-2014, 09:51 PM | #59 | |
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03-12-2017, 12:29 PM | #62 |
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Which OEM exhaust mod did you do? 2-pipe, 2.5pipe, 4pipe or bypass? Did you do the mods yourself?
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12-22-2018, 05:10 PM | #63 | ||
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A few years later and no one else seemed to notice this. Has anyone done this? It seems like it would require little in labor and would put the stock HFC in the right place and save a lot of cash that could be spent elsewhere. |
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12-22-2018, 06:46 PM | #64 | |||
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12-22-2018, 10:20 PM | #65 |
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I would think so. The stage 2 tune works with deleted primary cats but leaving the rear cats in place, so you'd simply move those cats forward to the primary location. They'd get the exact same exhaust charge as they would if you left them in the back and test piped the forward section. They'd actually work slightly better since they'd pick up more heat from being closer to the combustion event.
Does anyone know if the stock primary cats are metallic or ceramic substrate? |
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12-22-2018, 10:22 PM | #66 | |
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