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  • jake1829's Avatar
    Today, 06:04 AM
    jake1829 started a thread RE: Backfires on the N54 in N54
    Hi Guys, I have owned the car for over a year now, It’s a 2009 E92 from the UK - picked it up with around 24,000 Miles on the clock Within a few short months, the car was FBO and I was doing monthly track days. I spent quite a bit doing preventive maintenance as I knew I was going to be pushing the car with DD and doing track days • Walnut blasting • Replaced all coilpacks and spark plugs and now running the NGK plugs • Oil change every 3000 Miles Now the last 2 months I have had issues with car and bit of coin to get it all sorted. • Failed front turbo seal – decided to replace both turbo’s as the car had done now 43,000 Miles I had the workshop do an engine compression test as I was curious to see how the engine had been holding up since the tune/tracking etc Results: Compression was approx. 160 psi +/- 5psi (actually very even) on all cylinders on a cold engine. After a month of replacing the turbo’s, I noticed that my whiteish smoke with a blue tinge was coming from the exhausts on deceleration. Had the car sent back in to find out what was going on, and the shop came back with the following: Check oil smoke coming out of exhaust, on overrun/back on throttle Check oil level - ok, within min/max. Check crankcase pressure - within tolerance at time of check. Remove aftermarket oil catch can and check quantity of oil - very little at time of check, disconnect breather and run engine - no change. Disconnect charge pipe from throttle body, check for oil - ok, run engine with charge pipe disconnected - no change. Disconnect exhaust system at down-pipe connections and check for signs of oil at back of turbo's etc - ok at time of check. Suspect that oil bypassing at valve stem seals - smoking occurs after (normal) vacuum present in manifold, then throttle opened again. Also, no smoking apparent when engine held at constant higher revs (part load). So now it looks like I am going to need to replace the valve stem seals to fix the current issue I was at the local BMW meet the other day and caught up with a new member who was commenting on how he had seen me on the track etc and how my car was spitting flames from the exhaust etc So I was curious on why the valve steam seals had failed, as other people are pushing their cars way above my HP/tq etc I then came across this video: Which raised more questions :S I noticed some comments on how backfires could damage valve steam seals etc – not sure how true that tho! These vids are with me running the OFT with a wedge map for e50 – I have moved onto the JB4 recently – haven’t done a video yet to see if the car still spits flames with the IJOES E85 backend + Map7, probably will do this weekend to test You can hear the backfires: Now I know those are def not the burble from the exhaust(23 secs into my vid): So , is backfires normal on FBO 335i’s on E85? would appreciated the advice thanks My mod list: | Stacked JB4 + Flash Tune | FFTEC In-line Fuel Pump | AR Downpipes | Active Autowerke Bov | Active Autowerke Exhaust | Active Autowerke Race FMIC | Active Autowerke Strut | BMS Dual Cone Intake | BMS Oil Catch Can | BMS Thermostat | WaveTrac LSD | Evolution Racewerk Sport Oil Cooler | Michelin Pilot Super Sport tyres | Lux Angel eyes | KW V3 Coilovers | Vossen CV3 Wheels | DEFIV lockdown kit | Cyba Air Scoops | Arkym front lip | carbon side splitters | M3 Front & Rear Suspension Conversion | Apex EC-7 Wheels | Toyo R888 tyres | NGK 5992 Spark Plugs |
    3 replies | 103 view(s)
  • Vertigo's Avatar
    Today, 10:33 AM
    Vertigo started a thread P/P N54 Head in N54
    I just got the call last week that my head was ready to be picked up. Very happy with the work! To save on cost I decided to take on polishing the combustion cambers which is coming along nicely. I'm not going all out and didn't see any need for over sized valves as this is a spare head. .003 was taken off the deck but I am pretty set on using the stock (not thick) head gasket as I don't want the quench area to be too tall and have too much of the steel gasket sealing ring exposed during combustion and retaining heat. Between DI, running E85, and losing a slight amount of CR to the polishing of the CC I think I am making the right choice as this will be a daily driver and don't want to lower my CR too much. Once I decide to add a single, my hope is that the E85 will allow for higher boost without knock.
    2 replies | 120 view(s)
  • mikenikey's Avatar
    Today, 10:43 AM
    No meth heads, meth kits or meth pipes. BMW F10 M5 made 670.8whp (771.42hp) measured on a good dyno with tune only. This M5 was tuned with our new direct ECU flash. We can now program the exhaust blip and the traction system, so it's not too sensitive which relates to more traction. This is also available for all 2014 cars with the new encryption. Speed limiter is removed and the transmission is also programmed. http://www.6speedonline.com/forums/bmw-m/344269-ecu-tuning-group-bmw-f10-m5-made-670-8whp-771-42hp-ecu-tune-only.html Anyone knows of these guys ?
    3 replies | 66 view(s)
  • TheChasL's Avatar
    Today, 10:07 AM
    TheChasL started a thread Cobb AP in N54
    As much as it pains me to say it, I'm moving on from my N54 to the VW MK7 Golf R. As such I haven't any use for my Cobb AP I purchased in June of 2013 for $986 in Plano, TX. Holler if you have any interest as I'm happy with 50% back :) I might also be open to being convinced that I'm a complete moron and I should stick with the N54 platform. It simply seems all of the great mods are for the 1 and 3 series here, and the 5's are getting left behind... The VW Golf R with the Stage 1 Revo will do 0-60 in 3.6 seconds which is pretty darn amazing for a 4 banger.
    2 replies | 61 view(s)
  • onisyndicate's Avatar
    Today, 06:12 PM
    hello everyone, Things are looking up and I'll be moving into a place where I can have a project to do. I was looking at getting a E46 wagon and hopefully finding a wrecked E46 m3 and hopefully be able to do the swap. I've searched online for any how tos on it. But I can't find anything on it. I know it has been done with the six speed, SMG and even a AWD sedan has been done. Just no info. One I love wagons, two I love Inline Sixs and three it has been done. So I want it done.
    1 replies | 18 view(s)
  • AdminTeam's Avatar
    Today, 04:40 AM
    Welcome to a real enthusiast forum Veracopa.
    0 replies | 50 view(s)
  • AdminTeam's Avatar
    Today, 01:48 PM
    Welcome philbmw, take a look around, I think you will like what you see.
    0 replies | 38 view(s)
  • AdminTeam's Avatar
    Today, 11:09 AM
    Hey BOOST WILLIS: :text-welcomewave:
    0 replies | 34 view(s)
  • AdminTeam's Avatar
    Yesterday, 10:12 PM
    NC335d, we appreciate you taking the time to join.
    0 replies | 33 view(s)
  • AdminTeam's Avatar
    Today, 12:13 PM
    Welcome to a real enthusiast forum magyvermax.
    0 replies | 32 view(s)
  • AdminTeam's Avatar
    Yesterday, 09:50 PM
    Welcome straightboostin, take a look around, I think you will like what you see.
    0 replies | 32 view(s)
  • AdminTeam's Avatar
    Today, 09:09 AM
    Welcome Ray Pampena, take a look around, I think you will like what you see.
    0 replies | 26 view(s)
  • AdminTeam's Avatar
    Today, 04:21 PM
    Welcome to a real enthusiast forum VBlais.
    0 replies | 25 view(s)
  • AdminTeam's Avatar
    Today, 11:04 AM
    Welcome steverulz, take a look around, I think you will like what you see.
    0 replies | 24 view(s)
  • AdminTeam's Avatar
    Today, 05:16 PM
    Welcome to a real enthusiast forum Mskochencar.
    0 replies | 22 view(s)
  • AdminTeam's Avatar
    Today, 04:00 PM
    mindvision, we appreciate you taking the time to join.
    0 replies | 19 view(s)
  • AdminTeam's Avatar
    Today, 08:09 PM
    Hey Jesusgreen: :text-welcomewave:
    0 replies | 17 view(s)
  • AdminTeam's Avatar
    Today, 07:19 PM
    delattre11, we appreciate you taking the time to join.
    0 replies | 17 view(s)
  • VargasTurboTech's Avatar
    Today, 08:56 PM
    Got the all the final samples back today except the pulley, they broke a tool an its supposed to be done Friday. The housing, and mounting plate have to made in 2 pieces to keep machining costs down, this means we have grooves machined in that accept the plate, and then we have each housing Tig Welded. We will have this one welded tomorrow, and get it test fit soon, as long as everything fits as it should, we just have to final assembly fit on a the test vehicle, and start a machining run. A run of parts can take anywhere from 30-45 days depending on how backed up the queue is, sometimes longer, we are hoping they can get them done quickly for us. Excited to get these things out there, and running on some fast cars. Thanks for your patience!
    2 replies | 0 view(s)
  • nikitino25's Avatar
    Today, 09:05 PM
    nikitino25 replied to a thread E90,E91,E92,E93: Expert opinions wanted re M3 control arms in 3 Series and M3
    Thanks for the links. I have one more slightly easier question. I notice with the stock arms (and with shock tower pins removed so max stock neg camber) that when you turn the steering wheel, the ratio is low so that the car does not turn right away relative to how much you turn the wheel. Will M3 front arms and max neg camber remedy that so that the car turns faster with less steering effort; or mainly less steering wheel rotation?
    3 replies | 43 view(s)
  • DQE92's Avatar
    Today, 09:04 PM
    DQE92 replied to a thread ShotGun HPFP uprgade update in N54
    Nice update Tony on the shotgun hpfp pumps!! Do you think the stage 3s turbos will also be ready around the same time? :awesome:
    2 replies | 0 view(s)
  • AdminTeam's Avatar
    Today, 09:04 PM
    Welcome roniiich, take a look around, I think you will like what you see.
    0 replies | 0 view(s)
  • Wescuddles's Avatar
    Today, 09:01 PM
    Wescuddles replied to a thread ShotGun HPFP uprgade update in N54
    Cool
    2 replies | 0 view(s)
  • Sticky's Avatar
    Today, 08:51 PM
    Sticky replied to a thread O2 Sims? in N54
    That's enough marketing and business discussion...
    11 replies | 157 view(s)
  • Sticky's Avatar
    145 replies | 3609 view(s)
  • djpaulie's Avatar
    Today, 08:42 PM
    I was less worried about the TD04, sound like that is well tested on other platforms. I was more worried the 6AT as a very very high percentage of people on this platform have this and there is A LOT of low end TQ on these dynos. These TQ numbers surpass a number of turbo upgrade options for our platform and evwn some of those slip in some cases.
    126 replies | 2285 view(s)
  • Flinchy's Avatar
    Today, 08:39 PM
    Flinchy replied to a thread N54 intake manifold in N54
    so... Mycoupe is PwrHungry and.. someone else? the *___* user too? haha
    38 replies | 929 view(s)
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