04-16-2019, 12:09 AM | #45 |
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Yeah your right, you can notice the difference... Nice find... still umhing and ahhing ... looks like I'm probably going to get my OE mid pipe modified. Add an X or H pipe and cut out the secondary cats.. shouldn't be more then 300-400 I'm thinking...
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04-16-2019, 01:58 AM | #46 | |
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Let's just say - it sounded like a scud missile - Loud but way to much rasp ! |
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04-17-2019, 09:20 PM | #47 |
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yep you need the x pipe, that's what gives the deeper note, simply removing cats just makes this car sound weird - especially when you remove cats from the downpipe
i ended up buying the fabspeed via ebay, one of those things i just gotta try for myself i also ordered 2 new gaskets - part no. 18307851168 will make some back to back vids in meantime, here's an mpe run - i'll replicate same run and gopro placement with the mpe + fab Last edited by domino_z; 04-17-2019 at 09:46 PM.. |
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04-17-2019, 10:18 PM | #48 | |
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04-17-2019, 10:46 PM | #50 |
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04-18-2019, 03:37 AM | #51 | |
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Let me know when you get it delivered and installed!! |
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04-21-2019, 11:02 AM | #52 |
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You need perforated tube mufflers to get rid of the rasp. An X-Pipe gets rid of the farty 6 cylinder dual exhaust sound and makes the note higher pitched and more blended like a single system. V6 Commodores with a dual exhaust and no balance or X-Pipe sound farty like an M3/M4 and they sound more like an inline 6, an Falcon XR6 Turbo when a balance, X-Pipe or single system's fitted.
The M3/M4 should sound more like a Falcon XR6 Turbo that revs harder with the right exhaust configuration. |
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04-21-2019, 07:37 PM | #53 | |
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04-23-2019, 12:21 AM | #54 |
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I'm in the process of doing that.
This farty 6 cylinder sound the M3/M4 makes is a reincarnation of the '70's when they ran dual exhausts on 6 cylinder Holden and Valiant's. The M3/M4 sounds like a Valiant 6 Pack Charger but a lot of guys aren't probably old enough to have played with exhausts in that era. |
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04-24-2019, 12:27 AM | #55 |
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Has anyone tried an X-pipe with the M3/M4 competition pack exhaust? I've got the M4 pure which has the competition pack exhaust. Doesn't sound half bad and I don't want to spend 8k on an exhaust system.
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F82 M4 | 6-speed manual | PP performance Stage 2 tune | Re-valved Bilstein B16s | VRSF midpipe | OEM CS front splitter | OEM GTS hood | OEM M-performance rear diffuser| Evolve tuning catless downpipes | 310rwkw (415rwhp)
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04-24-2019, 12:31 AM | #56 | |
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that is most cost efficient way of getting a better sound while retaining stock muffler |
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04-24-2019, 12:37 AM | #57 |
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Thanks.
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F82 M4 | 6-speed manual | PP performance Stage 2 tune | Re-valved Bilstein B16s | VRSF midpipe | OEM CS front splitter | OEM GTS hood | OEM M-performance rear diffuser| Evolve tuning catless downpipes | 310rwkw (415rwhp)
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04-24-2019, 02:38 AM | #58 | |
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I found it has reduced rasp and is a deeper tone, its also about 20-30% louder than stock, maybe more than that when you're on it...
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04-24-2019, 05:52 AM | #59 |
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I have this setup.
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M4 Times (PSC2): Sandown: 1.21.76 Winton: 1M Times (PSC2): Phillip Island: 1.53.09 Sandown: 1.24.03 Calder Park: 1.07.31 Winton: 1.36.71 |
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04-24-2019, 08:36 AM | #61 |
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Oooh I see that you're in Melbourne. I'd love to hear your car if possible..
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F82 M4 | 6-speed manual | PP performance Stage 2 tune | Re-valved Bilstein B16s | VRSF midpipe | OEM CS front splitter | OEM GTS hood | OEM M-performance rear diffuser| Evolve tuning catless downpipes | 310rwkw (415rwhp)
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04-24-2019, 08:39 AM | #62 |
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That can be arranged...
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M4 Times (PSC2): Sandown: 1.21.76 Winton: 1M Times (PSC2): Phillip Island: 1.53.09 Sandown: 1.24.03 Calder Park: 1.07.31 Winton: 1.36.71 |
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04-25-2019, 02:14 PM | #64 | |
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To make a twin system sound like the AA midpipe that reduces the fartyness needs an X-Pipe or merge that joins the twin 2.5" pipes for ideally 5" (twice the pipe diameter). Balance pipes or H pipes don't join the twin pipes together for a long enough distance to optimally reduce the fartyness. |
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04-25-2019, 05:24 PM | #65 |
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