Quad Exhaust Monster
11-13-2007, 11:52 AM
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My Ride: 2005 BMW 545i, Silver Grey, Sport Package, R. Shades, Cold Pkg, Sat. Rad., Prem. Sound.
My worse nightmare has come true. 
The rear bumper is awaiting some parts and finishing, but the quad exhaust is done . . . maybe. I'll post a sound clip later in a separate thread and let you guys/gals figure out what kind of monster I have under the belly. Here's some pics for hints.
I'm not particularly proud of the sound level at 1500-2100 rpm on acceleration. Here's another hint: It louder than an M5 and the BMW mod shop next door LOVED IT. The sound is a real attendent getter. I might have to get use to it, but I know I'm going to get choke tonight by the wife.
The rear bumper is awaiting some parts and finishing, but the quad exhaust is done . . . maybe. I'll post a sound clip later in a separate thread and let you guys/gals figure out what kind of monster I have under the belly. Here's some pics for hints.
I'm not particularly proud of the sound level at 1500-2100 rpm on acceleration. Here's another hint: It louder than an M5 and the BMW mod shop next door LOVED IT. The sound is a real attendent getter. I might have to get use to it, but I know I'm going to get choke tonight by the wife.
11-13-2007, 12:06 PM
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My Ride: 2005 BMW 545i, Silver Grey, Sport Package, R. Shades, Cold Pkg, Sat. Rad., Prem. Sound.
Originally Posted by ImSort0fABigDeal' post='493819' date='Nov 13 2007, 02:59 PM
tips look a little small..what size are they?
Tips are 3" round angle cut.
11-13-2007, 12:16 PM
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My Ride: 2007 E60 530i
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I think the M5 bumper needs 90mm tips to fill them out nicely, but nonetheless they look good! 
I'm assuming you went straight pipes based off your description.
Are your tips staggered the wrong way?
They look inverted. Shorter on the inside and longer on the outside.
I'm assuming you went straight pipes based off your description.Are your tips staggered the wrong way?
They look inverted. Shorter on the inside and longer on the outside.
11-13-2007, 01:04 PM
#6
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Originally Posted by ImSort0fABigDeal' post='493819' date='Nov 13 2007, 09:59 PM
tips look a little small..what size are they?
+1
11-13-2007, 01:07 PM
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My Ride: 2005 BMW 545i, Silver Grey, Sport Package, R. Shades, Cold Pkg, Sat. Rad., Prem. Sound.
Originally Posted by KnIgHtCoM' post='493830' date='Nov 13 2007, 03:16 PM
I think the M5 bumper needs 90mm tips to fill them out nicely, but nonetheless they look good! I'm assuming you went straight pipes based off your description.
Are your tips staggered the wrong way? They look inverted. Shorter on the inside and longer on the outside.
I'm assuming you went straight pipes based off your description.Are your tips staggered the wrong way?
They look inverted. Shorter on the inside and longer on the outside.
The 90mm (~3.5 inches) would look too large since they will hang over the bottom of the bumper, though, if they were oval 3" x 3.5/3.75, that might look really cool. Then again, that size might even touch and melt the bumper inners. I probably don't know what I'm talking about.Could someone with 3.5+ tips post a pic or two?
11-13-2007, 01:09 PM
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My Ride: 2007 E60 530i
Color: Jet Black/Black Anthracite
STEP | Sport | Premium | NAV | Logic 7
EXTERIOR:
M-Tech Kit | M5 Mirrors, Trunk Finisher | Jet Black Kidney Surrounds | Madico Charcool Tint 54%, 35%
LIGHTING:
Euro-Headlights | Euro-LCI Tail Lights | AiB V3.0 | Solaris Invisi-bulbs | OEM LED Plate Lights
PERFORMANCE:
Porterfield R4-S Brake Pads | K&N Air Filter
WHEELS & SUSPENSION:
Work VS-XX 20x9, 20x10 | Toyo T1R 245/30/20, Michelin Pilot Sport A/S 295/25/20 | KW V2 Coilovers | Rogue Engineering 15mm Spacers
Check out VT's pics. He had RDSport quad exhaust which are 90mm tips.
11-13-2007, 01:57 PM
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My Ride: 2005 BMW 545i, Silver Grey, Sport Package, R. Shades, Cold Pkg, Sat. Rad., Prem. Sound.
Look ma, no sight of mufflers! Seeing a muffler box from a car was a pet-peeve of mine. Even the stock mufflers, which were concealed, can been seen from the side. Now, they're gone. There's another hint in the pics.
11-13-2007, 02:44 PM
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My Ride: 2007 E60 530i
Color: Jet Black/Black Anthracite
STEP | Sport | Premium | NAV | Logic 7
EXTERIOR:
M-Tech Kit | M5 Mirrors, Trunk Finisher | Jet Black Kidney Surrounds | Madico Charcool Tint 54%, 35%
LIGHTING:
Euro-Headlights | Euro-LCI Tail Lights | AiB V3.0 | Solaris Invisi-bulbs | OEM LED Plate Lights
PERFORMANCE:
Porterfield R4-S Brake Pads | K&N Air Filter
WHEELS & SUSPENSION:
Work VS-XX 20x9, 20x10 | Toyo T1R 245/30/20, Michelin Pilot Sport A/S 295/25/20 | KW V2 Coilovers | Rogue Engineering 15mm Spacers
Looks like I guessed right and you went with straight pipes. I think it would look better if you have your muffler shop adjust the tips so they're closer to the outer edge of the bumpers instead of centered. Bigger tips would help too.