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Thread: 3" Exhaust that doesnt suck

  1. #26
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    You should also get a set of these


    Sent from my iPhone using Tapatalk
    1989 535i - sold
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    2001 Lightning - current

    PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Fx725 twin ceramic, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, 14mm diff bolt conversion, Poly engine mounts, UUC trans W/ enforcers, Custom Ms41 id1700 E85 tune..... BUILD THREAD

  2. #27
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    Quote Originally Posted by vollosso View Post
    Most people mess up and put a 16gauge 90* right under the seats and have a wicked drone. Sent from my iPhone using Tapatalk
    You think that makes a big difference straightening out the exhaust under the seats? Do you have any data on that?
    '97 M3, Estoril blue, 2 dr, euro 6-spd, EFR 9180 divided T4 .92, RK tuning, CP 8.5:1 pistons, Eagle rods, Schrick cams, L19 11 mm ARP studs, O-ringed block, Supertech stainless/inconel valves, Supertech springs & Ti retainers, ported head, S54 oil pump/pan, 80 lb. injectors, OBD1 intake manifold, Steedspeed twin scroll T4, 3.5" SS exhaust, AMS-500 EBC, HFS-4 W/M injection, AEM Failsafe, Zeitronix data logger, Racelogic TC, OpenOBC w. ethanol %, Ireland Eng. engine mounts, UUC black tranny mounts w. enforcers, UUC twin disc feramic, ARC-8's, MCS 2-ways, Z3 rack, Rallyroad strut bar, X brace, Eibach sway bars, Ground Control LCAB bushings, Bimmerworld RTAB's, Powerflex subframe bushings, CES 750iL diff conversion, Stoptech BBK, titainium shims, steel braided lines, brake cooling ducts.

  3. #28
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    3" Exhaust that doesnt suck

    Quote Originally Posted by chikinhed View Post
    You think that makes a big difference straightening out the exhaust under the seats? Do you have any data on that?
    I have built a few exhausts, i can tell you from experience it makes a noticeable difference.


    Im sure physics and something about momentum carrying into the bend instead out of the exhaust and pressure waves having the most effect at 90* from the reference..


    Sent from my iPhone using Tapatalk
    Last edited by vollosso; 03-04-2017 at 12:04 PM.
    1989 535i - sold
    1999 Tiag/Dove M3 - sold
    1998 Turbo Arctic/black - current
    2001 Lightning - current

    PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Fx725 twin ceramic, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, 14mm diff bolt conversion, Poly engine mounts, UUC trans W/ enforcers, Custom Ms41 id1700 E85 tune..... BUILD THREAD

  4. #29
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    Those headers look ridiculous

  5. #30
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    Just an update, had walker make a 3" back with two Magnaflow's (12219). HO-LEE-SHIT. Sounds fantastic, I couldn't be happier. Lost .5lbs of boost, pulls like a raped ape. A/F didnt change much. Nice low rumble, screams up top...sounds like satan had taco bell for lunch, its fantastic. And its a good 25lbs if not more lighter than the previous setup.
    Last edited by Jab31169; 04-28-2017 at 11:59 AM.
    1995 M3...Screwed

  6. #31
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    1998 BMW 328i
    3 inch sounds so good on these cars. I just finished up fabricating my own. Im still NA for now but plan to turbo later. I kept the stock headers, threw a bimmerworld y pipe on, into a vibrant resonator and borla xr1.

  7. #32
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    busterhax is offline Y̝͎̘̍́ͣ̉͑̿̆Ō͎̼̺̬̒ͯ̃̇͗̂ U͈̖
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    My CES exhaust is a 3" with with a magnaflow in the center and in the rear. Sounds nice and no drone but it's a bit loud for my taste. After reading this thread, it seems Vibrant or Borla is the moves for the rear muffler.

  8. #33
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    Quote Originally Posted by busterhax View Post
    My CES exhaust is a 3" with with a magnaflow in the center and in the rear. Sounds nice and no drone but it's a bit loud for my taste. After reading this thread, it seems Vibrant or Borla is the moves for the rear muffler.
    The borla is also really loud. I just like the sound a lot. It pops and burbles a loooot

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