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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 | 97 view(s)
  • Sticky's Avatar
    Today, 02:09 AM
    Here are some Dynojet dyno numbers for an APR Stage I tuned MKVII Volkswagen GTI. APR released their Stage I MKVII GTI tune software last month but as APR uses a Dynapack hub dyno the numbers tend to be higher than other popular dynamometers. The results on the Dynojet here are interesting as the 91 octane Dynojet peak horsepower figure of 286 wheel horsepower is higher than the 281 wheel horsepower figure APR posted themselves. The torque figure of 460 is in newton meters. Converted to lb-ft it comes out to 339. APR's figure is 356 lb-ft of torque. Interestingly the horsepower figure is higher but the torque figure is lower on the Dynojet than the Dynapack. Critcism of APR's numbers being high due to their dyno may be overblown. Solid results with the GTI approaching 300 wheel horsepower with just a base Stage I tune.
    3 replies | 72 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 | 114 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. 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 | 59 view(s)
  • Sticky's Avatar
    Today, 02:41 AM
    This video is similar to another posted earlier this month showing the acceleration of the Lamborghini Huracan from a standstill. The difference is that the previous video was from the Russians over at and this one comes from the professional German automotive publication Sport Auto. The Germans use the launch control feature (known as thrust mode) and take the car up from a stop to a higher speed hitting an indicated 341 kilometers per hour or 211.8 miles per hour. At high speeds speedometers are known to read high so the car is likely traveling a bit slower than indicated but either way hitting over 200 miles per hour as quickly as they did in a completely stock car is incredible. The Huracan launches from a stop at roughly 4000 rpm with no drama and just rockets through the gears until topping out. It is a hell of a car right out of the box.
    2 replies | 42 view(s)
  • Sticky's Avatar
    Today, 01:45 AM
    Mercedes-Benz seems to just want to mess with its model naming conventions just because they can. What was the ML-Class became the M-Class and now the M-Class in turn become the GLE-Class when it receives a facelift during 2015. Now Car and Driver reports that the GLE will also be offered as a coupe which has been reported as the MLC up until now. This seems confusing but Mercedes is attempting to make things easier for the consumer. Why changing everything up is going to make everything easier is anyone's guess. Mercedes is going to apply to their SUV's what they already applied to the S-Class coupe when the CL-Class was discontinued. The same exact thing took place with the CLK and E-Class coupe. So, say goodbye to the M-Class. Say hello to the GLE-Class and further naming changes for the sake of change. Source
    0 replies | 90 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 | 37 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, 11:09 AM
    Hey BOOST WILLIS: :text-welcomewave:
    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 | 31 view(s)
  • AdminTeam's Avatar
    Today, 12:13 PM
    Welcome to a real enthusiast forum magyvermax.
    0 replies | 30 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 | 25 view(s)
  • AdminTeam's Avatar
    Yesterday, 09:08 PM
    Welcome Ninjamakong_suh, take a look around, I think you will like what you see.
    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, 04:21 PM
    Welcome to a real enthusiast forum VBlais.
    0 replies | 23 view(s)
  • AdminTeam's Avatar
    Today, 05:16 PM
    Welcome to a real enthusiast forum Mskochencar.
    0 replies | 19 view(s)
  • AdminTeam's Avatar
    Today, 04:00 PM
    mindvision, we appreciate you taking the time to join.
    0 replies | 18 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.
    0 replies | 9 view(s)
  • AdminTeam's Avatar
    Today, 07:19 PM
    delattre11, we appreciate you taking the time to join.
    0 replies | 0 view(s)
  • Sticky's Avatar
    Today, 07:45 PM
    Because I was sleeping.
    122 replies | 2037 view(s)
  • Sticky's Avatar
    Today, 07:38 PM
    Boobieboost! Genius.
    122 replies | 2037 view(s)
  • Sticky's Avatar
    Today, 07:36 PM
    Sticky replied to a thread For Sale: FS:E90 M3 replica side skirts in Buy/Sell - Parts
    5 replies | 46 view(s)
  • Sticky's Avatar
    Today, 07:35 PM
    These are faster than the Euro numbers. Interesting. Yes, definitely a front page article.
    9 replies | 275 view(s)
  • TT-Tom's Avatar
    Today, 07:29 PM
    @dzenno@PTF Without sounding confrontational, how are you logging boost above 22.1 psi? The dme wont see it so I see that as the major limiting factor to flash only. The debate may rage on and I am personally a fan of flash only, especially on an auto trans, but that question has always boggled my mind. I'm more interested because i will be upgrading to a different turbo solution and am wondering if you can log boost above those levels. Thanks!
    122 replies | 2037 view(s)
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