Drone Resonance and more Droning Thread
12-19-2007, 06:47 AM
#41
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2005 545i Sport SMG | Ti Grau | Schwarzes Dakota | Anthracite Maple | Logic 7 | Nav
Engine: Custom AFE CAI, Superchips ECU remap, Sprint Booster, RDSport Dual Exhaust Conversion with Quad Pipes and X-pipe, 3 resonators deleted, 90mm tips!
Exterior: M-Tech Aero kit | M5 Mirrors | M5 Rear Bumper | Trunk Lid Finisher | Vorsteiner decklid spoiler | 50% Formula One Pinnacle Tint
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ED Date: 4/7/05, Re-delivery date: 5/21/05
Similar too what you posted. So, Matt@Remus do you think either insert will cancel out the resonance?
12-19-2007, 06:58 AM
#42
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My Ride: 2004 E60 530i, 2012 E70 X5 35i
Model Year: 2004
Originally Posted by vegastrashed' post='508428' date='Dec 19 2007, 10:47 AM
Similar too what you posted. So, Matt@Remus do you think either insert will cancel out the resonance?
Attachment 42041
Attachment 42041
Hehe, you know, just off the topic, but all these "devices" you guys are posting up just look perverted..
.. HAHAHA.
But, on a serious note, if you put these cones before the xpipe, how much of the resonance will be removed? I would like to try this too.
12-19-2007, 07:06 AM
#43
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Not sure about the one you posted, but ours is to reduce DB output on our WildLabel exhausts to make TUV approved, a rigorous sound test in Austria.
The one you posted looks like a huge restriction.
We're not really believers in such methods, we do it just to meet requirements, otherwise it's a ghetto way to solve an engineering malfunction.
The one you posted looks like a huge restriction.
We're not really believers in such methods, we do it just to meet requirements, otherwise it's a ghetto way to solve an engineering malfunction.
12-19-2007, 08:15 AM
#44
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Originally Posted by vegastrashed' post='508384' date='Dec 19 2007, 01:30 AM
I should be asleep but the droning issue has consumed me. I've gone through many car forums and somehow came across the Dynatech Vortex Insert Cone. You can read up on what a CTS owner did here with the cone. If you google "Dynatech Vortex" there's a lot of examples in the Mustang, Nissan Titan, and other forums. So, what do you think B32 and rody about this Vortex insert cone as a resonance neutralizer?
12-19-2007, 02:09 PM
#46
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Originally Posted by RemusExhaustShop' post='508490' date='Dec 19 2007, 11:58 AM
2nd option
As for the Dynatech Vortex, I have not experience with one yet, though, I'd love to try it, but they don't have anything smaller than a 3" diameter. MY tubing is only 2.25. Darn.
You know, this is no different from rolling light steel mesh in a cone shape. The manufacturer claim 1-3 db reduce.
Does it have any sound absorbing material?
12-20-2007, 11:33 AM
#47
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My Ride: 2007 E63 AMG | Obsidian Black | Schwarzes Nappa | Black BirdEye Maple | Premium II Package | Electronic Trunk Closer | Parktronic
Engine: RPi/Powerchips custom ECU tune, RPi Ram Air Kit (BMC filter, scoops), RennTech Sport exhaust, secondary cats, charcoal and resonator delete, custom AAA x-pipe
Exterior: 50% side windows / 35% rear window Formula One Pinnacle Series | Flat AMG hood emblem
Suspension: Renntech Lowering Module
Wheels/Tires: Radenergie R10, Falken FK452 245/30/20, Yokohama ADVAN Sport 285/25/20
-----------------------------------------
2005 545i Sport SMG | Ti Grau | Schwarzes Dakota | Anthracite Maple | Logic 7 | Nav
Engine: Custom AFE CAI, Superchips ECU remap, Sprint Booster, RDSport Dual Exhaust Conversion with Quad Pipes and X-pipe, 3 resonators deleted, 90mm tips!
Exterior: M-Tech Aero kit | M5 Mirrors | M5 Rear Bumper | Trunk Lid Finisher | Vorsteiner decklid spoiler | 50% Formula One Pinnacle Tint
Suspension and Brakes: Bilstein PSS9 coilovers, JBT BBK: 16" cross-drilled rotors, 8 piston and 15" cross-drilled rotors, 4 piston
Wheels: VIP Modular VR 02 20x9F, 20x10R | Toyo T1R 245/30/20F, 285/25/20R
Lights: PIAA 4150K Xtreme White Plus fog lights, AIB v3
MOST IMPORTANT: Hardwired V1; =)
ED Date: 4/7/05, Re-delivery date: 5/21/05
Okay, out with Madonna's bra (Dynatech Vortex) and in with Dynomax bullet resonators to eliminate the drone. http://www.dynomax.com/products/raceseries.html
12-20-2007, 02:22 PM
#48
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My Ride: 2005 BMW 545i, Silver Grey, Sport Package, R. Shades, Cold Pkg, Sat. Rad., Prem. Sound.
Originally Posted by vegastrashed' post='508871' date='Dec 20 2007, 02:33 PM
Okay, out with Madonna's bra (Dynatech Vortex) and in with Dynomax bullet resonators to eliminate the drone. http://www.dynomax.com/products/raceseries.html
Yeah, screw the drone. Let the bombs be heard. 
12-20-2007, 02:40 PM
#49
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My Ride: 2007 E63 AMG | Obsidian Black | Schwarzes Nappa | Black BirdEye Maple | Premium II Package | Electronic Trunk Closer | Parktronic
Engine: RPi/Powerchips custom ECU tune, RPi Ram Air Kit (BMC filter, scoops), RennTech Sport exhaust, secondary cats, charcoal and resonator delete, custom AAA x-pipe
Exterior: 50% side windows / 35% rear window Formula One Pinnacle Series | Flat AMG hood emblem
Suspension: Renntech Lowering Module
Wheels/Tires: Radenergie R10, Falken FK452 245/30/20, Yokohama ADVAN Sport 285/25/20
-----------------------------------------
2005 545i Sport SMG | Ti Grau | Schwarzes Dakota | Anthracite Maple | Logic 7 | Nav
Engine: Custom AFE CAI, Superchips ECU remap, Sprint Booster, RDSport Dual Exhaust Conversion with Quad Pipes and X-pipe, 3 resonators deleted, 90mm tips!
Exterior: M-Tech Aero kit | M5 Mirrors | M5 Rear Bumper | Trunk Lid Finisher | Vorsteiner decklid spoiler | 50% Formula One Pinnacle Tint
Suspension and Brakes: Bilstein PSS9 coilovers, JBT BBK: 16" cross-drilled rotors, 8 piston and 15" cross-drilled rotors, 4 piston
Wheels: VIP Modular VR 02 20x9F, 20x10R | Toyo T1R 245/30/20F, 285/25/20R
Lights: PIAA 4150K Xtreme White Plus fog lights, AIB v3
MOST IMPORTANT: Hardwired V1; =)
ED Date: 4/7/05, Re-delivery date: 5/21/05
Okay, that doesn't sound too encouraging. I hope you're not mistaking bullet resonators for a cherry bomb. I've read in the M5board where a member installed two bullet resonators to QUIET his Eisenmann Race exhaust with stock section 1 (secondary cats) and 2 (resonator) on his E60 M5.
12-20-2007, 02:49 PM
#50
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My Ride: 2007 E63 AMG | Obsidian Black | Schwarzes Nappa | Black BirdEye Maple | Premium II Package | Electronic Trunk Closer | Parktronic
Engine: RPi/Powerchips custom ECU tune, RPi Ram Air Kit (BMC filter, scoops), RennTech Sport exhaust, secondary cats, charcoal and resonator delete, custom AAA x-pipe
Exterior: 50% side windows / 35% rear window Formula One Pinnacle Series | Flat AMG hood emblem
Suspension: Renntech Lowering Module
Wheels/Tires: Radenergie R10, Falken FK452 245/30/20, Yokohama ADVAN Sport 285/25/20
-----------------------------------------
2005 545i Sport SMG | Ti Grau | Schwarzes Dakota | Anthracite Maple | Logic 7 | Nav
Engine: Custom AFE CAI, Superchips ECU remap, Sprint Booster, RDSport Dual Exhaust Conversion with Quad Pipes and X-pipe, 3 resonators deleted, 90mm tips!
Exterior: M-Tech Aero kit | M5 Mirrors | M5 Rear Bumper | Trunk Lid Finisher | Vorsteiner decklid spoiler | 50% Formula One Pinnacle Tint
Suspension and Brakes: Bilstein PSS9 coilovers, JBT BBK: 16" cross-drilled rotors, 8 piston and 15" cross-drilled rotors, 4 piston
Wheels: VIP Modular VR 02 20x9F, 20x10R | Toyo T1R 245/30/20F, 285/25/20R
Lights: PIAA 4150K Xtreme White Plus fog lights, AIB v3
MOST IMPORTANT: Hardwired V1; =)
ED Date: 4/7/05, Re-delivery date: 5/21/05
Great.... I found a website that shows an example of a cherry bomb muffler and it looks exactly like a bullet resonator! I give up. The stock resonator is going back on.
http://auto.howstuffworks.com/muffler5.htm
http://auto.howstuffworks.com/muffler5.htm