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      10-15-2016, 08:49 PM   #1
tetsuo111
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Tetsuo111's E91 Track Toy Build

I bought my E91 two years ago (Oct '14) and felt the upcoming anniversary would be a good time to assess my experience with the car, and put together a past-due documentation of my build.

This is mostly for me, to document my build, but I wanted to share this with others in case it might be helpful. It's a pain to reconstruct events from the past two years, but I had no idea that this car would turn into a hobby / science experiment.

My initial impressions are in this thread:

The E91 N52 is a Thrilling High Performance Machine

My goal for this car was simply to replace a Jeep I used for winter climbing and skiing adventures in the mountains. There were no performance expectations before buying the car, I was just ready for a change. This is good, because this low-mileage / 24k miles E91 felt like a tired Toyota Camry - very quiet, softly-sprung and damped, and generally uncontrolled and imprecise. This was surprising. I learned to drive at a time when I and my peers swore "only German" cars because the alternatives were so uninspired.

THE PLAN

I value athletic performance, balance, and agility over brutal speed and race car handling. These are what made the classic "pre-Erectile Dysfunction / Efficient Dynamics" BMWs distinctive and unique. After my initial disappointment in the car's handling, I decided to try and tune the car similar to the pre-ED BMWs I was familiar with. So my order of focus was: 1) stopping, 2) handling, 3) power, 4) other stuff, like utility and appearance. As a former engineer, I understand the benefits of a "systems approach" to mods rather than slapping on bolt-on parts du jour. I made the effort to familiarize myself first with the OE systems before trying to change them.

New (to me), and still a virgin. But not for long...
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

Last edited by tetsuo111; 10-20-2016 at 09:58 PM.
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      10-15-2016, 09:26 PM   #2
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Winter Tires

Nov 2014

It's winter and I'm a climber - first order of business is ditch the loud, dead, heavy Conti RFT all-seasons for proper winter tires. Hello Costco and Bridgestone Blizzak WS-80s 225/45/17 on OEM style 285 rims. The Blizzaks dig deep and stick like velcro in deep snow on remote unimproved roads. I learned to drive in Chicago and live in snow country. The WS-80s just work, but are probably overkill for less severe winter conditions. No pics, just a tire on a rim.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

Last edited by tetsuo111; 10-16-2016 at 06:49 PM.
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      10-15-2016, 09:48 PM   #3
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Brakes And Bits

Installed StopTech slotted rotors, Hawk 5.0 pads, Motul 600 fluid and stainless lines. The change wasn't dramatic, but it was easy to feel a mildly firmer pedal and less fade. Still, after the project was done I was underwhelmed. I wanted a firmer pedal feel that's pressure modulated rather than range-modulated - familiar to anyone driving on a high-performance brake system.

Next was my first elective mod - M3 front chassis strut brace. Only because I was just dipping my toe into the "mod" world. This was simple and cheap. Handling feels incrementally more precise than the non-M brace.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

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      10-15-2016, 10:03 PM   #4
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Down To Business - TCKline Suspension

Feb 2015

On a winter trip down from the Cascades, it was surprising how poorly the E91 handled. The car is so underdamped, it completely unloads in certain situations. It drove nothing like the classic, pre-ED BMWs I remembered driving, with their direct connection between pilot and road. I wanted to enjoy the drive, not pilot an appliance.

Time for coilovers, camber plates, and solid AL RSBs....

xDrive made TCKline an easy choice. The xDrive aftermarket is pretty dry. TCKline has one of the few options, based on shortened Koni sports. The ride and handling is a night and day improvement over stock. The ride is super supple and comfortable, and the handling is more precise and damped. Makes me want to try more precise dampers like Ohlins, but there's no xDrive support. Probably a good thing (for my wallet).

In hindsight, an upgraded suspension (assume tires and brakes are mandatory rather than mods) is the most significant upgrade, from this driver's perspective.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

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      10-15-2016, 10:20 PM   #5
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Euro Air Box

The Euro air box was motivated by nothing more than a desire for a practical way to service my intake. I compared the volume with the N American version and found the volume is slightly larger, as well as losing the charcoal filter.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne
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      10-15-2016, 10:48 PM   #6
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Apex ARC-8 + PSS

Spring, and time for a dedicated summer tire setup.

I wanted a modestly-wide (for grip), square (for rotation), and lightweight (feedback and handling) wheel for summer. The ARC-8 at only 16.5 lbs works on all counts and looks good. Plus, Apex is on my short list of companies for consistently terrific customer service.

Michelin PSS 245/40/17 on 17 x 9 ET:30 ARC-8 Hyper-Black

Both the Blizzaks and PSS are miles ahead of the OEM Conti RFTs in terms of grip, heat fade, comfort, and noise.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

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      10-15-2016, 10:49 PM   #7
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Quote:
Originally Posted by tetsuo111 View Post
The Euro air box was motivated by nothing more than a desire for a practical way to service my intake. I compared the volume with the N American version and found the volume is slightly larger, as well as losing the charcoal filter.
Euro, huh? Did you swap out the IAT for the original MAF? And ya wanna sell that IAT sensor that came with the Euro airbox?
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      10-16-2016, 07:59 AM   #8
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Hey what happened, I know you've done more than this. Lol.
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My build thread.
It's a wagon with stuff on it.
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      10-16-2016, 01:18 PM   #9
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Quote:
Originally Posted by justpete View Post
Euro, huh? Did you swap out the IAT for the original MAF? And ya wanna sell that IAT sensor that came with the Euro airbox?
Hey Pete - that part's someplace in my storage now. I'll keep an eye out for it for you next time I'm there.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne
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      10-16-2016, 01:19 PM   #10
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Quote:
Originally Posted by Ruddigger View Post
Hey what happened, I know you've done more than this. Lol.
Lol - you were right, I should have documented from the beginning. It's more difficult now, going through old notes and pictures.

This one will take time....
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne
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      10-16-2016, 02:33 PM   #11
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After 4 months of ownership, I was still sane. Mods were limited to a few upgrades, other than the suspension. The new suspension was a joy compared with OEM. I wasn't into my car as entertainment or hobby yet - I could have just enjoyed it as is, like a normal person. Then I discovered E90post...

Time for a late winter road trip to Leavenworth.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

Last edited by tetsuo111; 10-16-2016 at 02:40 PM.
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      10-16-2016, 03:32 PM   #12
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First Track Day

Mar 2015 - The Ridge Motorsports Park

My friend and HPDE instructor invited me to join him for a track day at The Ridge. Conditions - Rain coming down in sheets. After two sessions, my instructor (HOD-owner) gave me the green light to drive solo. I was hooked, and surprised to find myself gliding by a few 911s and M3s (I learned to drive around age 11, and used to drive 911s back in the day, including track time). I wanted more track time, and I wanted to improve the car's driving dynamics and visceral experience to be more like the classic, pre-E9X BMWs I was familiar with.

Sorry no pics, I was having way too much fun. Heavy rain, my first day on a track in a long time, and I was hooked. No more self-restraint, I was going to upgrade the wagon for more fun on the track. Little did I know this was the beginning of a slippery slope. Sure, it would be easier to just get a more suitable track car like a Miata, E30, Vette, 911, or Cayman but what fun is that? The idea of building a sleeper wagon was more appealing.

I bought a Bell helmet (seems all my hobbies require helmets....). Then I wanted more power. I dove in, ordered a 3IM DISA manifold and AA headers+tune. Installed the DISA manifold myself, and had the headers ceramic coated at Performance Coatings. Skipped wrapping the headers because of the wet PNW weather.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

Last edited by tetsuo111; 10-16-2016 at 06:45 PM.
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      10-16-2016, 03:40 PM   #13
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The rear seats in the Jeep were always folded down to make room for toys in back. Same in the E91. Since I planned to return to the track, it seemed like a good idea to remove the rear seatbacks and privacy screen for weight savings. I never would have guessed those have a combined weight > 80 lbs.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne
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      10-16-2016, 03:55 PM   #14
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Headers

May 2015

I read the DIY header installs, and realized that I had no interest in attempting this job myself. I met Charles Dundon at Gerber Motorsports while I was searching for support. Charles is a great guy, intelligent, and seemed to have a national reputation for designing a great GT3 exhaust. He installed my headers, and we began talking about a new exhaust for the wagon...

Gerber Motorsports shares a building with an individual with an amazing motorsport collection. I must have seen close to three dozen historic racing cars, including F1 in the building. No pics here at the request of the owner.

I also picked up some beautiful socket organizers from Westling.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

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      10-16-2016, 04:11 PM   #15
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Dyno

Jun 2015.

My first dyno, after upgrading the intake and headers, and installing the AA off-road tune. This was done at Pacific Import Auto in Tacoma, where they run an AWD Mustang dyno.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

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      10-16-2016, 04:35 PM   #16
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RSBs / Delrin Diff Bushings / Intake / M3 Engine Cowl / Pedals

Jun 2015.

Reading too much E90post. Starting to realize the N52's power limitations (or extraordinary efficiency, depending on perspective), and that gains are mostly going to be the result of efficiencies in the breathing, until progress is made with cams and internals. Suspension gets more love, and continues improving. The solid Al RSBs removed a ton of slop in back and result in NO increased NVH. The delrin diff bushings remove drivetrain slop very noticeably, with a bit more hf whine and NVH that imparts a wonderful mechanical feeling. I love it, but passengers do notice the whine and not all appreciate it. I listen to the radio infrequently because a) I prefer the new mechanical sounds the car makes, and b) it's noisier inside.

After a half-year of ownership, the car's character is sharper and more precise. Early pessimism is gradually turning to enthusiasm and making excuses to go for a drive.

- Turner Delrin differential bushings
- MRF solid Al RSBs
- RM throttle body hose
- Intake scoops
- Designed a Dinan-style CAI snorkel
- M3 engine cowl (makes access to the rear of the engine bay easy)
- Installed Turner pedals, just because.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

Last edited by tetsuo111; 10-17-2016 at 04:11 PM.
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      10-16-2016, 04:59 PM   #17
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Jul 2015.

- Bought M3 rear control arms and Megan adjustable toe link.
- Removed rear seat bottom (~15 lbs)
- Installed Performance shift knob
- Ordered SuperSprint section 1 pipes
- Installed M3 carbon fiber leather trim
- Track day, Pacific Raceways in Kent.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne
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      10-16-2016, 05:13 PM   #18
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Aug 2015

- Talking with Charles about a new exhaust. Step 1, benchmark the OEM exhaust primaries.
- SuperSprint test pipes arrive
- Becoming a motorhead. I have grease under my fingernails. Reading about cars and racing too much. Toying with buying a vintage bike. Decide against it because I'm terrified of Seattle drivers' inattention and lack of proficiency.
- Removed last of the interior wood trim with black wrap on the center console.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

Last edited by tetsuo111; 10-16-2016 at 07:07 PM.
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      10-16-2016, 05:38 PM   #19
tetsuo111
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Sep 2015

- Installed rear suspension links
- Installed M3 steering wheel
- Installed M3 DCT paddles
- SyncroDesigns front tension arms with sealed spherical bearings arrive!!!
- Track day at The Ridge

The suspension continues to get love. This car is quicker than it was, but won't ever be brutally fast, so let's make it handle better. The car is beginning to feel better, reminding me of the German cars I used to love. The ride is supple and precise. As compliance is removed with firmer parts, the car feels tighter and better controlled / damped. Efficient Dynamics-era BMWs bore me. The wagon is beginning to feel like a pre-ED BMW.
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

Last edited by tetsuo111; 10-16-2016 at 05:54 PM.
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      10-16-2016, 06:10 PM   #20
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SyncroDesigns Sealed Spherical Bearings

Oct 2015

Almost zero aftermarket support for xDrive front suspension. The rear bits are interchangeable with RWD parts, but only Powerflex bushings are available to firm-up the front suspension. Then I connected with Dave at SyncroDesigns. Dave races a BMW wagon, and his support was terrific. The sealed bearings are sourced from Germany. They're a major improvement, and in hindsight they should be at the top of the suspension upgrade queue, with RSBs, coilovers, and camber plates.

Write-up here:

xDrive Front Suspension Upgrade - Finally


Washed the car and took her for a spin.
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__________________
BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

Last edited by tetsuo111; 10-17-2016 at 05:55 PM.
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      10-16-2016, 06:31 PM   #21
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Second Dyno

Oct 2015

Took the car back to PAI for another dyno, after installing the RM silicon hose and snorkel CAI.

+ 15 hp and 16 ft/lbs for $80

Not certain how to interpret the 4100 lbs weight. Doesn't make sense.
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__________________
BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne

Last edited by tetsuo111; 10-16-2016 at 07:35 PM.
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      10-16-2016, 06:39 PM   #22
tetsuo111
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Track Eats Tires

This is one tire after 5 months.

My tires used to last for years. I need to learn to drive with a lighter touch. Smooth is fast....
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BMW CCA #505794 STOP: StopTech ST60/ST40, Ti heat shields GRIP: ARC8 17x9+MSI lugs, TCKline Coilovers+Camber Plates+400#/600#, MRF Aluminum RSBs, SyncroDesign Bushings, M3 Links+Brace+Rods, MR Adj Toe, UUC Sway GO: BPC Tune+Euro Airbox+AFE Filter+RM Intake+330i 3IM+AA Headers+Ceramic+321SS 20G/Inconel Exhaust, 3.91 LSD, 034+TMS Drivetrain Bushings MISC: BMW Perf Aero, Recaro Profi, M3 Steering Wheel+Paddles+Cowl+CF/Kevlar Bumper, TMS Pedals, UUC E-brake, CF Leather, Railectomy, Safecraft, LUX, Xpel+FormulaOne
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