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BMW 3-Series (E90 E92) Forum
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Weight Reduction Data Compilation
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03-09-2013, 10:49 PM | #45 | |
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07-06-2013, 08:17 PM | #47 |
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I have been for the past year. No problems cold starting even in below 0 weather. Braille 21lbs.
Haven't been trickle charging it or anything. As a matter of fact, I left the car for 2 months, unplugged the battery, and when I started the car up after reconnecting the battery, everything started up great. |
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07-06-2013, 08:37 PM | #48 | |
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Edit: Nevermind, found the answer and part on EAS.
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Last edited by akotten; 07-06-2013 at 09:30 PM.. |
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07-19-2013, 04:16 AM | #49 |
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I posted this in another thread, but I was considering having a fiberglass roof made for my e90. It would be cheaper than CF or steel and would weigh in between CF and Steel. Also, I wonder if fiberglass front fenders on an e90 would be worthwhile.
Edit* what about the mirrors? APR universal mirrors could save weight too. Last edited by mapleridge; 07-19-2013 at 04:52 AM.. |
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07-20-2013, 05:26 AM | #51 |
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This is an extremely useful thread, as I have always been extremely weight-concious with my car. This should definitely be stickied.
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2007 E90 335i Titanium Silver Metallic, Premium Package, Comfort Access Package
JB4 • Borla catback & midpipes • VRSF DP's • AFE DCI w/ scoops • 19" wheels • ST V1 • M3 control arms • UR strut brace • HID projector fogs • LED Blacklines • full LED conversion |
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07-20-2013, 12:51 PM | #52 | |
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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07-20-2013, 12:52 PM | #53 |
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Badass thread!
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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07-21-2013, 08:09 AM | #54 | |
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Further from my last post, I installed a carbon fiber roof. I ended up dropping another 50lbs off my roof. So when all was said and done, my car with 3/4 tank weighed 3,220lbs. or a reduction of 178lbs. I know for a fact that if you install a carbon fiber roof in a coupe it'll drop 40lbs. We installed on in the e92 race car that I drive and that was the exact weight we dropped. I'm guessing the coupe roof is a little smaller than the sedan so that's where the weight delta comes from.
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07-21-2013, 09:43 PM | #55 | |
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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07-21-2013, 09:54 PM | #56 |
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07-21-2013, 10:35 PM | #57 | |
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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07-21-2013, 10:38 PM | #58 |
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07-22-2013, 12:39 PM | #59 | |
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07-22-2013, 06:09 PM | #60 |
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so daily driving no issues at all? The B3121C is the same as above but carbon fiber? Changing system works with this battery to?
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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07-22-2013, 06:29 PM | #61 |
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Nice info here! Did a weight reduction with a CF hood, trunk and Forgestar wheels and did an M3 rep with fog delete. Looking to get the car on a scale to see how much I dropped, I believe I lost close to 70lbs.
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DONE: Seibon CF Hood, M3 Rep, MSport rear w/DD CF Diffuser, M3 Rep Skirts, Seibon CSL trunklid, Forgestar F14 18s w/Michelin PSS, Eisenmann catback, AA Headers, BPC Stage 2, Charcoal Delete+revMotor+AFE Drop In filter
FUTURE MODS: LED headlights, CF rooftop, M3 Suspension Conversion, Dinan CAI Mod |
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07-23-2013, 03:46 AM | #62 |
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So once replacing the lighter Braille battery, what codes have to be flashed
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07-23-2013, 09:38 AM | #63 |
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My weight reduction.
30 mins: Rear Seat- Back: 40 LBS Rear Seat- Bottom: 14lbs Battery Cover (With Tools): 3.1 lbs Trunk Lining (both sides) plus rear plastic piece- 5.2lbs Easily Removable Seat Belt Pieces- 6.8 lbs Hood Cowling, Cabin Air Filter, wire holder, ECU & ABS Covers - 10 LBS Trunk Bottom- 9.6lbs Trunk Insert- 1.5lbs Results: Noticeable difference? Yes. Easier on the rear suspension. Slightly less traction for RWD. More in-cabin noise (probably a good thing at the track)
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▀▄ 'O6 330i | 6MT | Sport Package | Black Sapphire Metallic | Aluminum Trim | Black Dakota Leather | H&R Sport Cupkit | AFE Intake | Matte Black (Dipped)162's - BFGoodrich g-Force T/A KDW | 18mm Rear Spacers | ECS CF/Aluminum Strut Bar | M3 Sways | Depo Blacklines | |
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07-23-2013, 10:15 AM | #64 | |
2006 330i, TSM, Black, manual, sport
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Yes, B3121C is the same as above, but carbon. Charging system works fine. You just need to tell the computer that you installed a new battery so it doesn't overcharge it. I don't do coding, my shop did the install.
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07-23-2013, 12:04 PM | #65 |
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Ott of all the new batteries I have gotten I have never registered it. Can my coder do this for me?
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JB4 G5, Stage 3 LPFP, Stage 2 MOTIV PI, VM 6466 ST, Custom OCC W/ SS lines, ER FMIC, ER CP W/HKS BOV, M3 control arms, M3 guide rods, M3 upper links, M3 front & rear sway-bars, HPA rear toe arms, Wavetrac LSD, HPF Gen 2, DEFIV kit, KW clubsport, Delrin solid SF bushings, stoptech rotors, Rogue Tranny Mounts, 1M bumper, M3 CF hood, M3 fenders, M3 OEM sideskirts, Mtech rear bumper, CSL trunk, MORR VS8.2 rims 245/295
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07-23-2013, 03:21 PM | #66 | |
2006 330i, TSM, Black, manual, sport
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From what I've read on here, the electronics will have the alternator charge an older battery more often than a new battery. There's been cases where batteries have blown up, but I'm not sure it was a case of computer overcharging or some other influence. TBH: I know there are plenty of people on here that have not registered their battery and it's been fine. It's up to you.
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