Quad exhaust conversion
03-11-2013, 08:50 PM
#1
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Quad exhaust conversion
There seems to be a lot of posts asking about the ebay diffusers that had no answers and just generally a lot of quad exhaust conversion posts with no answers. So, I thought I'd post pics of my setup.
Car is a 2010 535 M Sport. Here's how it started:
First things first, I went with this eBay diffuser:
BMW Carbon Fiber Rear Diffuser E60 M Sport Tech Quad | eBay
A couple notes on it...
1. I'm not sure how carbon fiber stuff is made but this appears to be fiber glass with a layer of carbon fiber and then clear laquer over that. Maybe that's the accepted method for this stuff. Either way it's lighter than stock and still plenty firm plus the finish was great.
2. There are tabs that slide into the stock bumper and they suck. They're brittle and not deep enough to fit the right way so getting the piece to fit, especially on the rather floppy bumper, can be a challenge. It's doable though.
Diffuser installed:
Now then for the exhaust. There were a couple sellers selling a quad exhaust conversion on eBay that was a direct bolt on. I ordered it once and they lied to me about it getting damaged in shipping despite never shipping it. So they refunded me and I ordered from another seller that actually ended up being the first seller and they gave me the same excuse. I look in their feedback and there's a bunch of people complaining about the same "it got damaged in shipping" excuse.
So a member here saw my post about it and PM'd me about a setup he had on his car that he was willing to sell. This particular setup is custom but uses a Dynomax muffler and custom piping. It's basically just a 1 in; 2 out muffler with a pipe that runs from the second exit to the right side of the car.
Here's the finished product:
It turned out exactly how I wanted it and it sounds great, especially with the downshift rev matching with the SAT trans... It lets out a nice burble as it's downshifting and is probably as loud as a stock M5 so very tolerable and with no drone.
And that's my story!
Car is a 2010 535 M Sport. Here's how it started:
First things first, I went with this eBay diffuser:
BMW Carbon Fiber Rear Diffuser E60 M Sport Tech Quad | eBay
A couple notes on it...
1. I'm not sure how carbon fiber stuff is made but this appears to be fiber glass with a layer of carbon fiber and then clear laquer over that. Maybe that's the accepted method for this stuff. Either way it's lighter than stock and still plenty firm plus the finish was great.
2. There are tabs that slide into the stock bumper and they suck. They're brittle and not deep enough to fit the right way so getting the piece to fit, especially on the rather floppy bumper, can be a challenge. It's doable though.
Diffuser installed:
Now then for the exhaust. There were a couple sellers selling a quad exhaust conversion on eBay that was a direct bolt on. I ordered it once and they lied to me about it getting damaged in shipping despite never shipping it. So they refunded me and I ordered from another seller that actually ended up being the first seller and they gave me the same excuse. I look in their feedback and there's a bunch of people complaining about the same "it got damaged in shipping" excuse.
So a member here saw my post about it and PM'd me about a setup he had on his car that he was willing to sell. This particular setup is custom but uses a Dynomax muffler and custom piping. It's basically just a 1 in; 2 out muffler with a pipe that runs from the second exit to the right side of the car.
Here's the finished product:
It turned out exactly how I wanted it and it sounds great, especially with the downshift rev matching with the SAT trans... It lets out a nice burble as it's downshifting and is probably as loud as a stock M5 so very tolerable and with no drone.
And that's my story!
03-11-2013, 09:32 PM
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My Ride: 2004 530i | Sapphire Black | Sport | Premium | NAV | Logic 7 | DPE R07 Variant S Gloss Black with Polished Lip 20x8.5 front 20x10 rear | Falken FK452 tires 245/30/20 front 275/30/20 rear | H&R Coilovers | Smoked Tail Lights | M5 trunk spoiler | AC Schnitzer style roof spoiler | HID 8000K headlights & foglights | 35% tint all around | Sprint Booster | Speed Innovation ECU tuning | M5 trunk finisher | M-Tech body kit | Remus Quad Exhaust | AC Schnitzer style pedals | Euro Stickers | RPi Ram Air Induction | Smoked LED Side Lenses | AC Schnitzer style e-brake handle | AC Schnitzer style shifter | AC Schnitzer style iDrive knob | AC Schnitzer style carbon fiber diffuser | carbon fiber hood/trunk/steering emblems | carbon fiber grilles | carbon fiber door pillars | MTEC v2 Angel Eyes | Hamann style carbon fiber splitter
looks great!
03-12-2013, 11:55 AM
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My Ride: 2009 535i Sport
Model Year: 2009
Engine: N54
Really sharp, I think your blue is the best color for CF as well.
On the CF method - I know a lot of places advertise "genuine/real carbon fiber", and it's a layer over fiberglass. The stuff that is 100% carbon fiber is more expensive. There are also differences in carbon fiber - dry, prepreg, etc.
On the CF method - I know a lot of places advertise "genuine/real carbon fiber", and it's a layer over fiberglass. The stuff that is 100% carbon fiber is more expensive. There are also differences in carbon fiber - dry, prepreg, etc.
03-12-2013, 12:16 PM
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My Ride: Original E60 Spec:
530i - Silver Grey Out, Black Dakota Leather In, Navigation Pro, Voice Command, HiFi Audio, Sports Package, Premium Package, Cold Weather Package w/ Heated Seats, Style# 123 Alloy Track Wheels, Auto AC, Power Front Seats, Active Turn Xennon Headlights,
Mods:
OEM M-Tech Front Bumper, OEM M Side Skirts, OEM M5 Rear Bumper, M5 Trunk Lid Finisher, M5 Style Mirrors, Custom Hamann Style Splitter, Custom Hartge Style Diffuser, RD Sport Boot Spoiler, LCI Taillights, Bruce Miranda's V4 LCI Retro Cables, 6000K Xenon light Bulbs, Xenon White LED License Plate Lights, 8000K HID 9006 Fog Lights, Akalius� Front Headlight Euro Overlays, Matte Black Kidney Grilles, E60.Net Clings, Debadged, Llumar Tinting "Micro Edged, 15% Rear 35% Sides,
Engine Mods:
Custom Magnaflow Quad Exhaust w/ Eisenmann Stamped 3� Tips, RPI Scoop (Red)
Added Electronics:
V1 Equipped (Hardwired), OEM Alpine CD Changer Retrofit,
Shoes:
SOLD-20" Staggered Vertini Hennesey Rims, Falcon 452's Tires-SOLD
New Shoes:
19" VMR 710 Hyper Silver, General Exclaim UHP 245/35/19 Front-275/30/19 Rear, Gloss Silver Caliper Paint Job DIY
^_____________
Retired
______________
Took Delivery 10/26/2009: LOADED! E60 M5 Silverstone II/Black, Active Seats, Comfort Ventilated/Heated Seats, HUD, Brushed Aluminum Trim,
Looking good man!
03-12-2013, 12:17 PM
#8
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Do you have an OEM Mtech rear bumper or is it an aftermarket Mtech rear bumper like the types that Trinity/Umnitza sell?
Looks great!
Looks great!
Last edited by Persian_535i; 03-12-2013 at 12:22 PM.
03-12-2013, 12:35 PM
#9
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Thanks guys. I had no idea about the differences in carbon fiber available but for the price the piece is made well so I really didn't have any complaints other than that their ad tries to make it sound as if it is 100% carbon fiber. I don't care though.
It's a stock M-Tech or M-sport. I forgot what they called them for 2010 but I think it's physically the same regardless of year.
Do you have an OEM Mtech rear bumper or is it an aftermarket Mtech rear bumper like the types that Trinity/Umnitza sell?
Looks great!
Looks great!
