Differential mods for 545i / 550i
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From: San Diego, CA
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
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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
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
Originally Posted by houbmw' post='294066' date='Jun 7 2006, 03:48 PM
is this also available for the 2007 530i with SMG???? Who much would installation cost, approximately, and would it void our warranties? Ive already bout some mods and I still dont have my car yet, haha
Contact Koala Motorsport: http://www.koalamotorsport.com/contact.asp. They may just have a 530 differential for you. I bet all it is is a swap from a 530 Step with a final drive ratio of 3.64.
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From: Huntington Beach, CA
My Ride: 2007 550i, Black Sapphire, SMG, M-Aerokit, Sports Package, Comfort Access, Logic 7,
Originally Posted by jiio' post='294072' date='Jun 7 2006, 05:57 PM
$1500 is just for the differential and shipping from Ohio. Installation is separate. I have a guy in mind already in San Diego to do the install.
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From: Austin TX
My Ride: 2014 X5 xDrive 5.0 M Package Carbon Black Metallic/2008 M Roadster Imola Red
Originally Posted by houbmw' post='294066' date='Jun 7 2006, 05:48 PM
is this also available for the 2007 530i with SMG???? Who much would installation cost, approximately, and would it void our warranties? Ive already bout some mods and I still dont have my car yet, haha
To deny a warranty claim, all BMW has to do is to assert that an after-market part caused the problem with the OEM part--whether it did or not. BMW, like many manufacturers, is very adroit at arguing that problems with OEM parts are caused by after-market parts. Thus, I would not want to be in the position of having to take BMW to court to force the company to "prove" its point.
So, I won't install an after-market part that might be argued somewhat reasonably to have caused the failure of a BMW part unless the after-market manufacturer provides a warranty on the part and any BMW part that may fail because of the part (e.g., Dinan). Even then, one can get caught in the middle.
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My Ride: 2014 X5 xDrive 5.0 M Package Carbon Black Metallic/2008 M Roadster Imola Red
Originally Posted by jiio' post='294053' date='Jun 7 2006, 05:29 PM
Hollywood,
You and I should try to get some other folks for a group buy
I don't know if I want to pay Dinan's overinflated price of $2K. Koala Motorosport is selling differentials for $1500 and you get a choice of the different final drive ratios. Dinan only offers 3.45. I think I'm going to go with either 3.91 or 3.64 from Koala. Thanks for the info Znod and choi000!
You and I should try to get some other folks for a group buy
I don't know if I want to pay Dinan's overinflated price of $2K. Koala Motorosport is selling differentials for $1500 and you get a choice of the different final drive ratios. Dinan only offers 3.45. I think I'm going to go with either 3.91 or 3.64 from Koala. Thanks for the info Znod and choi000!
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From: Huntington Beach, CA
My Ride: 2007 550i, Black Sapphire, SMG, M-Aerokit, Sports Package, Comfort Access, Logic 7,
Originally Posted by Znod' post='294085' date='Jun 7 2006, 06:12 PM
You are welcome. Happy down gearing.
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Originally Posted by hollywoodtrash' post='294176' date='Jun 7 2006, 08:48 PM
Hey Z, do you think the differential will shave off at least .5 seconds on the zero to sixty?
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From: Huntington Beach, CA
My Ride: 2007 550i, Black Sapphire, SMG, M-Aerokit, Sports Package, Comfort Access, Logic 7,
Originally Posted by Znod' post='294185' date='Jun 7 2006, 09:10 PM
I really do think so--even going 3.48 to 3.91. That's 12.4% more RW torque. Let's say that means 12% more RWHP--.124 X 250 (max) = 40.92 more equivalent RWHP for a 545i. Assuming a 20% loss in efficiency between the flywheel and the ground, that means 40.92 / .8 = 51.15 more equivalent FWHP--which yields a total of 51.15 + 330 = 381.15 equivalent FWHP for a 545i. Then, using the standard rule of thumb that 10 extra FWHP means a .1 quicker ET we get an ET improvement of 51.15 / 10 / 10 = .5115 sec quicker ET.
Well done Z. Jiio and I were seriously considering this mod sometime soon. He'll probably pick it up before I do. When it's all said and done, you should cruise down to LA and have a field day with my car bring the g-meter!
Contributors
Joined: Apr 2005
Posts: 7,363
Likes: 1
From: San Diego, CA
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
It's gonna be the best $2K spend so far on my precious. I'm going to make the call to Koala tomorrow and give them my business then call the guy in San Diego to set up a schedule for the install.
Hollywood,
I'm gonna tear you up! That is until you get yours done. :'(
Hollywood,
I'm gonna tear you up!
That is until you get yours done. :'(
Thread Starter
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Joined: Apr 2006
Posts: 755
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From: Huntington Beach, CA
My Ride: 2007 550i, Black Sapphire, SMG, M-Aerokit, Sports Package, Comfort Access, Logic 7,
Originally Posted by jiio' post='294216' date='Jun 7 2006, 10:04 PM
It's gonna be the best $2K spend so far on my precious. I'm going to make the call to Koala tomorrow and give them my business then call the guy in San Diego to set up a schedule for the install.
Hollywood,
I'm gonna tear you up! That is until you get yours done. :'(
Hollywood,
I'm gonna tear you up!
That is until you get yours done. :'(
