After running around with the RMS headers last night and suggestions from my fabricator and posts on here, its become apparent that the Active track pipe (Says 3", drops down to 2" in the muffler) and Eisemann rear section are now holding up the exhaust flow. I want to move to a 3" but I still want to be able to take this car on long trips without dealing with drone. I looked at the Bimmerworld 3" setup but I've seen a lot of folks state that its just loud and drones like hell. Anyone have a custom setup that they daily that does well?
Or do I hack up my Active and put in a higher flowing muffler?
1995 M3...Screwed
Put in a 3 inch electric cutout.
1996 332IS
Built 3.2
CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
Technique Tuning 80# tune.
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Drone generally comes from a lack of mid section muffling (resonator). Overall loudness generally comes from rear muffler selection.
More restriction generally means quieter.
I used to havea 3" with a vibrant ultra quiet res in the middle and a Borla xr1 in the rear and it didn't drone.
I have a 3" exhaust for sale right now. I will see if I can get the PO to provide some sound clips as I never installed it. Would be willing to work out some sort of trade for the AA "b" section as I need that anyway.
https://www.bimmerforums.com/forum/s...naflow-Muffler
I am running a magnaflow center muffler and a borla xr1 rear muffler; 3.5"
You should update your sig
1995 M3...Screwed
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k 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, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53
Read this, I spent a lot of time and money testing.
http://www.bimmerforums.com/forum/sh...aust-Q-amp-A-s
'97 M3, Estoril blue, 2 dr, euro 6-spd, EFR 9180 divided T4 .92 IWG, 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, eBoost2 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, 210 4-clutch LSD, Stoptech BBK, titainium shims, steel braided lines, brake cooling ducts.
Im using 2 - Vibrant 3.5" mufflers with open 38mm gates. FF to 30secs
98 Fern Green M3/2 - Precision 6870/AR Designs Twin Scroll/RK/E85
2017 Toyota Tundra Crewmaxx - Family Whip
2011 Pierce 75' Quint - Fire Apparatus West Islip FD
The OP is supercharged, a straight though 3.5" would make him deaf.
'97 M3, Estoril blue, 2 dr, euro 6-spd, EFR 9180 divided T4 .92 IWG, 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, eBoost2 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, 210 4-clutch LSD, Stoptech BBK, titainium shims, steel braided lines, brake cooling ducts.
3" is going to be loud unless you run 2 large mufflers. I've done it multiple times with various combos on NA applications. Vibrants are loud mufflers and so is the Borla XR-1. This was 2.5" single exhaust with ebay headers, a Borla Pro-XS mid muffler and a Vibrant street power out back. No drone, and mild below 3500 rpms, definitely loud at WOT. If you ran this combo with 3" it would definitely be louder.
https://www.youtube.com/watch?v=nS2RJCk_itY
https://www.youtube.com/watch?v=r2H5YreLZqk
On my s52 Ti, I run Racleand headers, to single 3" with a Vibrant Ultra Quiet resonator AND a Vibrant 12" resolator after that, to a Borla Pro-XS rear muffler. It's about as loud as my 2.5" exhaust was on my e30 with a deeper sound because of the headers and Borla out back.
Last edited by e30polak; 02-17-2017 at 02:10 PM.
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Scarlet V2 - #Project333Ti - http://www.bimmerforums.com/forum/sh...(-Project333Ti)
This the semi-current sound out of mine, its a little deeper now with the RMS headers
https://youtu.be/L7-GFGTWYTg?t=1891
1995 M3...Screwed
I'm still NA (for now), but my exhaust is similar: SS rep long tube headers into Y-pipe into 3" piping.
I'm using a 3" Mangaflow race cat and two 3" Magnaflow oval-body straight-through race mufflers.
No drone and nice tone (Magnaflow sometimes sounds like poo).
I used to not have the center muffler for better ground clearance, but I added the center muffler (only 3.5" case height for better ground clearance), and the car got much quieter (esp when not full throttle) and much less raspy.
If my car was currently running, you could come hear for yourself in person...
Last edited by m3leistung; 02-17-2017 at 06:31 PM.
99 M3
Turbo chews up the noise. Supercharger is much louder. I went with RMS to modified euro SS mid to euro SS rear. If single 3.0, you will want at least 2, maybe 3 resonators/mufflers.
The AA track pipe offers to high of back pressure based on the back pressure measurements that I took on my superchargers s52 at 13 psi. It looks pretty and fits nice though.
'97 M3, Estoril blue, 2 dr, euro 6-spd, EFR 9180 divided T4 .92 IWG, 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, eBoost2 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, 210 4-clutch LSD, Stoptech BBK, titainium shims, steel braided lines, brake cooling ducts.
Following this closely. Want to go to a 3" header back exhaust for my setup as well. I want to retain my Remus muffler but I'll have to split back into dual before the muffler if I really want to keep it. So Ill be Longtube headers to 3" midsection straight back to the Remus muffler, pretty much identical to my setup now except I have a dual 2.25" setup that feels restrictive. Hardest part is finding an exhaust shop in the Metro-Atlanta area that will touch an exhaust without a catalytic converter.
Last edited by maharaj1; 02-17-2017 at 10:03 PM.
-Fully Rebuilt M52-Ported & Polished Head-3 Angle Valve Job-S52 Cams-540 MAF-24lb Injectors-BBTB-Longtube Headers-TRM Tune-ZF 5 Speed Swap-M50 Manifold-AFE Stage II 3.5" CAI-Remus Exhaust-Rokkor Coilovers-Polyurethane Bushings-ZHP Shift Knob-Sport Seats-M-Technic Body-EBC Cross Drilled & Slotted Rotors-EBC Red Stuff Pads-Euro Foglights-DJ Auto-Clear Lights-M Tech Side Moldings-VDO Gauge Pod-BBS RC-M Tech 1 Steering Wheel-BSW D210-Motion Motorsport Under Panel
Cars: 2005 BMW 545i-2004 BMW X5 4.4i-2004 BMW 645ci-1999 BMW 528i-1995 BMW 325is-1994 BMW 840i-1989 Mercedes-Benz 560SL-2001 Dodge Ram 2500 Turbo Diesel
Mine's 3" all the way, no cat, Vibrant ultra quiet resonator in the middle, oval muffler out back and it doesn't drone. I believe it was made by Maximum PSI, and used to be attached to NY98M3's car.
96 320i Touring
98 Z3 2.8 Roadster
01 PY M Coupe
96 Z3 1.9 - DASC
95 318ti Clubsport
94 Miata M-Edition
13 smart fortwo
Supercharged car here with headers, race cats, and 3". My car was loud. I tried various mufflers. All loud. I finally got it quieter by squeezing in a large Magnaflow 12589 in the back. Straight through muffler, but the large case really knocks down the sound level. Size of the case is the key to reduce sound.
98 540i 6, 525 whp, 120 mph 1/4, V3 Si S/C'er @16 psi, W/A I/C, Water/Meth, Supersprint Headers, HJS Cats, 3" Custom Exhaust, UUC Twin Disc, Wavetrac LSD, GC Coil Overs, Monoball TA, AEM FP, Aeromotive FPR, AEM Failsafe AFR/Boost, Style 65's w/275's, M5 Steering Box, Eibach Sways, M3 Shifter, Evans Coolant, 85 Deg Stat, PWM Fan, 10" Subs, B.A. speakers, Grom Aux/BT, Still Rolling as my DD!
Building a custom 3", will post pics when it's done. Probably won't be done until after the trackids day at barbers the weekend of the 24th
I ditched my 3" exhaust on my sc car with RMS headers after a few months. Had a vibrant resonator and muffler and still was unbearable. The euro supersprint stuff is much more tame and still flows great if you're looking for other options.
1989 535i - sold
1999 M3 Tiag/Dove - sold
1998 M3 Turbo Arctic/black - current
2004 Built motor TiAg/Black - Sold
2008 E61 19T Turbo-Wagon - current
2011 E82 135i - S85 Swap - current
1998 M3 Cosmos S54 swapped Sedan - current
1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k 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, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53
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