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#141
09-07-2021, 11:14 AM
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R90 received a new metering valve and fuel system got a new filter System tested for boost leaks Vacuum system checked and new pressure converters for turbos The last (and most annoying) issue is an exhaust leak which becomes audible when the engine is warm and mainly happens between 2,000-3,000rpm. More on this later. Replaced a faulty soft-close actuator, easy process.  Playing around with different exhaust setups in preparation for having a custom axle-back built. That is a pleased face!  Silicone license plate frame  New Bosch wiper blades to pair with the new windsiheld!  OBD splitter so I can have my P3 vent gauge and Pro Tools (or whatever else) connected at the same time.  Nice parking spot  Wash time before my fiance drove it around on dirt roads wine tasting lol  Resolving fueling issue by installing a new metering valve, I also swapped the fuel filter for good measure.    Double checking boost pipes   I switched from the constant tension clamps to HPS worm drive. Back in 2014 or so I was getting my E61 dynoed at FFTEC up in the Bay Area and they swore by HPS worm drive clamps as they used then on all their big turbo Evos. I have been following suit on both my E61 and now E70 all run HPS clamps, no issues so far and I love their small size, space is limited on around the silicone connections on the E70 so they're a great fit.  I took the opportunity to replace the belt tensioner too. Very easy process  Next to test vacuum system and components  Cleaned MAF  Just to be triple sure there wasn't any exhaust leaking form the manifold pressure sensor banjo-connection that I had to recut threads into, I added a tiny bit of exhaust gasket sealer.  AM coffee and pressure converters! These are what control the turbo crossover valve, turbo bypass valve, and the LP turbo waste gate. On the forums I read there can be no codes, they can test ok, but still not be 100% so it seemed like a good idea to replace all 3.  
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#142
09-07-2021, 11:15 AM
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With the vacuum "block" removed I triple checked the manifold for signs of leaks, there is absolutely zero signs of leakage around the manifold. I installed 2 new mani-turbo gaskets when installing the turbos and I even replaced the gaskets once just to be sure. Looking from above and below I can also see no signs of gasses escaping from the gaskets.
 The only place I am noticing an exhaust leak is on the crossover arm on the LP turbo. In this collage the arm was cleaned and the carbon you see on it is from a 40 mile drive. I understand there may be a tiny amount of gasses escape from here but to have that much expelled during a short drive seems excessive. Since the exhaust leak noise stops at ~3k this also makes sense that the valve would be included in that. Moving forward my plan is to stick a Go Pro in the engine bay and hopefully get some footage of the audible exhaust leak corresponding with the movement of the arm, hopefully we can see some visible gasses too. I am smelling gasses in the cabin through the cars ventilation system when it's not on recirculation.  Finally snagged this blank piece from an X5 at the salvage yard. 
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#143
03-16-2022, 10:25 AM
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Geeze, I need to get caught up on this thread! I guess first things first; I got married Oct 2nd out in Flagstaff, AZ. Everything was amazing. Here is a photodump of "X5 Doing Things."
Bikes check, dogs check, wedding dress in cargo box check, double check the latch on the cargo box check check!  Always filling with renewable diesel when I can.   In-laws used to drive a Toyota Highlander and Porsche Cayenne before I joined the family.  The "Castle" aka Air BNB for us and our friends to party in   Hike in the Aspen trees  Fall colors at Pine Canyon  MTB in Sedona, epic.  Riding Hi-Line solo for the first time in the rain was a bit hairy but memorable. 
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#144
03-16-2022, 11:02 AM
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Now back to our regularly scheduled nerdy tech, maintenance, and mods content.
I had plans to fit OEM 343M wheels on the X5 but after some issues with wheels not as described and a bunch of time wasted I lost interest and ended up fitting the wheels on my E61, oh well.   No surprise the F10 M5 wheels pair well with the F10 M5 brakes!  Looking right at home on the wagon.  Some small parts for the X5M diff: new grounding strap, heat shield, and exhaust hangers.  Before  After  Snagged a 335D engine cover. I liked the (kinda?) clean look without the cover and I certainly like the accessibility for wrenching but I wanted to keep the diesel clatter to a minimum and the 335D cover fits well with my custom intake.    New cabin air filters, thanks FCP   New Bike Day. XXL Nicolai G1   New boost pipes  I built up another set of 20x11 square ZL1 wheels. I do prefer the black over the graphite finish on the last set. This time I went with Toyo Proxes STIII. They come in the 295/45/20 size, are M+S rated All Season, and the price is about as low as it gets for a reputable brand tire.   Loving the cleaner look with the black wheels.  Cute little brakes on the Raptor  Ever since I installed the aftermarket fender flares I wanted to ceramic coat them to protect from future UV damage. I finally got around to it and cleaned/coated all plastic trim. I used Avalon King. Before    After    It was inevitable.... KW V3  The Koni Reds clashed with the yellow calipers... lol    Much better!  The Toyos had a slightly different profile than the Hankooks so I swapped the 5mm spacers for 8mm. This was with the 5mm installed. Not for the faint of heart.  I was worried the fronts would look a bit poke-y with the larger spacers but honestly it looks perfect! More pics after I get the ride height dialed and finish another little project!  
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#145
03-21-2022, 10:39 AM
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As my age gets higher so does my ride height
Front KWs were raised to match the rear and ditch the rake for a level ride height, very happy with the the results. I am still developing thoughts on the KWs so for those interested in feedback please sit tight. I am happy to report the exhaust system is complete. Installing the larger (wider) F85 rear differential meant the stock piping wouldn't fit and for the a while I ran some clamps, a resonator, and a turn down off my mid pipe which terminated just before the diff. I was toying with reinstalling my QTP exhaust valve as I appreciated having the option to open the valve when I wanted to puff my M57 chest but the reality is space was now a premium and although my QTP valve has been reliable, in general they are not known for being particularly so. I again, took the mature/classy/boring? route and decided to keep the exhaust quiet by skipping the valve, keeping the OEM muffler, and also adding a Vibrant Ultra Quiet Resonator. I was surprised to learn the resonator killed a lot of the turbo spool. I run the same resonator on my E61 with twin turbos and the spool is loud and piercing, not on the M57 I guess those frequencies were gobbled up. The resonator also kept the hissing and fluttery noises to a minimum which I do appreciate as the growl of the M57 comes through better. Overall the sound of the system is subtle, a bit classier/cleaner, but still has character. I had a local shop assist with the fabrication. They welded the Vibrant resonator into my Rawtek mid pipe, fabricated piping around the rear differential to connect mid pipe to OEM muffler, and fabricated piping from the muffler to accommodate the rear tips. A couple v bands were added to make the system modular and easier to install/remove. Everything is mandrel bent and tig welded. Here is the layout of the system: Rawtek down-pipe Rawtek catted mid-pipe w/ Vibrant ultra quiet resonator OEM E70 X5D muffler w/ OEM F15 M Sport tips Sorry for the shit pics but you get the idea...      Fitting F15 tips isn't for the faint of heart, it requires precise trimming and some creative fabrication skills to bring it all together. After mocking up the tips, eyeing, and measuring multiple times I was convinced it could work and proceeded to prep and trim the bumper. I traced the tip onto cardboard and then used a torx bit to extend the size, my goal was to have ~1/4" clearance around the tip, erroring on the side of "tight" and clearancing more as needed. Nothing is worse than having a hacked up bumper with excessively large holes. yuk   I applied tape to the bumper and used both the actual F15 tip and template to scribble my cut mark, double, triple, and quadruple checking as I went.  The driver side came out in about 20 pieces and I was a lot more proficient on the passenger side, here is the rough cut of the first pass, I came back in to clean up everything  Unibody was also slightly trimmed   Little OEM tip swimming in a sea of clearance.  Initial pics after installation.    Scratches on the bumper courtesy of the fabrication shop. Aside from this collateral damage I was very happy with their work. As you can see the bumper needed some additional clearance.  Added tape and revised my trimming.  Muffler/bumper fitment is so tight the bumper needs to be removed to remove muffler, not ideal but sometimes I sacrifice function for aesthetics, this is one of those times. V-band just before muffler makes this process much easier.  I thought about painting the muffler black to match the tips but it would have been a bit of work and I wasn't convinced it wouldn't chip over time from road debris so I decided just to refurbish the muffler and piping with some wet sanding, I love how you can bring new life to metal with some elbow grease.   Cleaned, scuffed, and primed.  ....and painted   Final pics       Chrome vs Black tips  Day 0 vs Day Now Funny because it looks way different but most of the work done to the X5 you can't see. More to come!!! 
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#146
04-04-2022, 10:18 AM
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Mini update.
The big news is this San Diego, CA vehicle is now a Boulder, CO vehicle as I have recently moved. The 1,000+ mile drive through CA, AZ, NV, UT, and CO was awesome and the X5 was a champ. Loaded to the gills with tools, belongings, bikes etc. it returned 22-23mpg on the drive which may not seem that great but with speeds between 80-90mph and elevation eclipsing 11,000ft through the rockies, they are satisfactory numbers. For reference the wife's Q7 4M with a few suitcases and 2 dogs, no cargo box or aero drag, only mustered 19mpg. Also, now that I live in a fairly flat area the X5 is poised for MPG greatness. I am 1/2 way through my first tank of fuel in Boulder with mostly urban driving checking out homes for sale and I am sitting at 28+mpg which includes some spirited canyon driving and overtaking. By my calculations ~30mpg for a tank of fuel should be the new norm. Impressive considering the altitude and the fact I would get 21-24mpg per tank in CA. Here are a couple better pics of my exhaust system as well as the "cool" X5M trans pan and differential heat sinks.   Apparently the X5 with the KWs installed couldn't get aligned on the Hunter machines? Techs say that the machine needs to have weight added to the back of the vehicle to read specs and they weren't able to do this. Kind of a bummer since I paid for a lifetime alignment via Firestone and essentially it's now useless.  Fresh oil change for the drive out to CO and knowing I won't have my tools available for the first few months out here.  Some pics on the drive East     
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#147
04-04-2022, 10:18 AM
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Mini update.
The big news is this San Diego, CA vehicle is now a Boulder, CO vehicle as I have recently moved. The 1,000+ mile drive through CA, AZ, NV, UT, and CO was awesome and the X5 was a champ. Loaded to the gills with tools, belongings, bikes etc. it returned 22-23mpg on the drive which may not seem that great but with speeds between 80-90mph and elevation eclipsing 11,000ft through the rockies, they are satisfactory numbers. For reference the wife's Q7 4M with a few suitcases and 2 dogs, no cargo box or aero drag, only mustered 19mpg. Also, now that I live in a fairly flat area the X5 is poised for MPG greatness. I am 1/2 way through my first tank of fuel in Boulder with mostly urban driving checking out homes for sale and I am sitting at 28+mpg which includes some spirited canyon driving and overtaking. By my calculations ~30mpg for a tank of fuel should be the new norm. Impressive considering the altitude and the fact I would get 21-24mpg per tank in CA. Here are a couple better pics of my exhaust system as well as the "cool" X5M trans pan and differential heat sinks. Apparently the X5 with the KWs installed couldn't get aligned on the Hunter machines? Techs say that the machine needs to have weight added to the back of the vehicle to read specs and they weren't able to do this. Kind of a bummer since I paid for a lifetime alignment via Firestone and essentially it's now useless. Fresh oil change for the drive out to CO and knowing I won't have my tools available for the first few months out here. Some pics on the drive East
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#148
04-04-2022, 07:43 PM
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30 mpg should not be a problem. Up and down the east coast gets me 28+ consistently. Cross country a couple times got me close to that as an overall average. Western US legs were netting 31+ mpg. It's fun to drive, roomy, and gets good fuel consumption numbers.
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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim 2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim
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#150
08-30-2022, 10:15 AM
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