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07-03-2012, 10:53 PM | #24 | |
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Just do the periokid mod and if you feel you need louder, than go for the ACM mod. |
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07-04-2012, 08:24 AM | #25 | |
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ACM is just the perfect volume for me. Anymore tamed and I would question why I would even have had it done
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07-04-2012, 08:50 AM | #26 | |
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07-04-2012, 10:54 AM | #27 | |
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I did the 2 perforated pipe replacement (aka traditional oem mod) and its perfect for me. ACM mod seems to get mixed reviews- some love it and some think it's too much as its essentially a straight-through muffler. Also how people describe drone is different - op says he can "hear and feel" the exhaust with the windows up which to me says it drones. |
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07-04-2012, 12:02 PM | #28 |
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hey guys i'm sure they are all great, i only know of the ACM mod and the results. Def contact the guys who do the work for the best answers. I can only speak for the ACM mod and you can see/hear the results in the videos
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07-04-2012, 03:45 PM | #29 | |
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07-05-2012, 07:28 AM | #30 | |
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07-05-2012, 07:46 AM | #31 |
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The video of you driving through the reservation, is that windows up or down, I'm having a hard time figuring that out.
From the research I've done, there's for sure no doubt with the old OEM mod method. The only thing I'm concerned about is whether I'll be happy with the volume. I can only assume that the ACM method is extremely loud during cold start up?
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07-05-2012, 03:16 PM | #32 | |
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http://www.europeanautosource.com/pr...exhaust-e9x-m3 |
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07-05-2012, 05:47 PM | #33 | ||
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07-05-2012, 07:49 PM | #34 |
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07-06-2012, 02:39 AM | #35 |
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I did the ACM method and I don't have any hum while driving 70+. I tried to listen for it with the windows down and didn't hear anything. Maybe my ears don't know how to differ the drone/non drone sound/feel. I've had passengers in my car that couldnt tell either. So, unless I hear something different, my car does not "drone".
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07-06-2012, 09:54 AM | #37 |
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If you do a search for OEM exhaust mod and primary cats deleted, you'll find plenty.
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07-06-2012, 04:29 PM | #38 |
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Great review PicassoM! ACM is installing the OEM mod on my car in 2 weeks. Stil up in the air on tips. May go with flat black 3.5s. The can will be black. Spoke to ACM and they are working on bolt on test pipes. I will be in line for that when ready.
By the way, nice jet black e92 in your pics
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07-06-2012, 11:16 PM | #40 | |
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and by the way, my drones like a mofo, and although its fun as heck when ur on it, the freeway cruising drone is killing me. |
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07-06-2012, 11:20 PM | #41 | |
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VHT SP102 FlameProof Coating Flat Black Paint Can Claims "Withstands temperatures up to 2000 degrees when cured properly" http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER
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07-07-2012, 12:07 AM | #42 | |
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07-07-2012, 08:57 AM | #44 | ||
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So I took her for a long drive yesterday and really payed attention to the sound up at the higher speeds. Around 80mph, in order to consistently cruise at that speed you have to have a little bit of gas and the RPM will be around 3k. Well there is a slight drone around 80mph, good news... it's really not that bad. Certainly not deafening or really loud. But you do hear a rumble. It's aftermarket and def louder so I guess that's one thing you have to take with a grain of salt. Quote:
Personally I don't understand the point in coating the muffler, can anyone explain?
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