01-18-2015, 12:37 PM | #67 | |
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1) Trick question! It has two. 2) Multiple - I guess for our purposes - 4-5? Pre-injection, Main-injection, Close Post-injection, Late Post-injection. 3) From all the reading I've done...PSI means very little if the car can't handle it. Since most piggy backs are modifying and plugging into MAF, MAP, and TMAP sensors, my money is on MAF (mass air flow) sensor. This is the amount of air the engine is taking in. More air...more compression...more hp? Please feel free to correct me so we can learn more. This is great info.
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01-18-2015, 02:20 PM | #68 | ||
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No clue about the injection, I know it passes the piezo but not sure what happens after that. The more cool air you can jam into the cylinder the more torque? PSI? I was never any good at trivia But I am learning a ton here. |
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01-18-2015, 02:23 PM | #69 |
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01-18-2015, 03:11 PM | #70 | |
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Yea of curse we shuld take the words of RC about in tollerance whit some ease, tuners ar allways claiming all kind of stuff but in the end of the day its our cars :-) I used my tourqe app to get the readings. I can’t talk of the DPF giving that much power in person but a lot of people whit the f10/11 N57 are talking about at least 10+ hp when removing DPF. On a another note I also experienced the burnt plastic smell that you were talking about, I accidently hade the setting 0/7 on the car for about 1 hour and i believe the high pressure pump got hot as hell, can’t say 100% because of all the parts and stuff i the motor, but I’m pretty shure, think the car went lean on fuel because of the settings and the smell was burned diesel?? Turned the car to F/6 setting and everything was fine but you should defiantly use the settings whit some caution Do you Know how to accurate calculate kpa/bar turbo boost from the readings of kpa/bar from the intake? I have forgotten this. Another question how do i read the EGR values in an accurate way, i mean i have the actual readings but i don’t really now how to use them.
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01-18-2015, 04:27 PM | #71 |
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Here are three trivia questions for everyone on our 35d motors:
1. How many turbos does our TwinTurbo Power engine have? For the 35d F15 in the US, it uses a single VGT (variable geometry turbo) with a dual plane (see attached image taken from TurboDirect SA) compressor - multi-length vanes - every other vane is shorter than the next. The VGT is more efficient since the ECU controls the turbine's blades (the hot side) to spool up faster or when you call for more power (wide open throttle for example). At cruise, the engine needs much less air so the blades are adjusted to provide less boost even though the engine has higher RPM. Bi-turbos in series are not as efficient as a VGT. 2. How many injector events are there per combustion cycle? BMW dumped piezo technology in favor of a very fast solenoid injector on a high pressure common rail fuel system releasing 6 separate injections per cycle. This has two advantages: finer spray pattern (high pressure) over 6 injections makes a quieter and more efficient engine (higher mpg), longer dwell time during the actual injection making more torque. This is why I am paranoid about messing with the timing on the chip. The injectors no longer provide one single event during a 360 degree rotation. It might be spread out over 10 degrees and screwing with this too much will really add heat to the engine. By the way, I just read where BMW has electronically limited the torque in our engines to provider longer life on components, like drivetrain, cam chains, u-joints, etc. That's why the torque curve spikes early then plateau's out and holds it. Unless we re-program the ECU, we will never improve torque past the pre-determined amount set by BMW. 3. Which is more important for power relative to boost: PSI or MAF? PSI means nothing without volume. Mass Air Flow (temp and volume) is what is important. For example, I can have a can of compressed air to clean my computer that is compressed to 60 psi, but it's being released through a 1 mm hole. Open the hole to 75 mm at 60 psi and now you're talking volume. Cool that volume via a good intercooler, making it denser (packed more air per given volume), and you've got real power opportunities. I find this stuff interesting. When I read in an earlier post that new cars have tens of millions of lines of code, I didn't think much of it. Now the deeper I go investigating BMW's tuning strategy by speaking with diesel mechanics and tuning engineers, the more I am amazed at the sophistication in our engines and why. Again, it is why I am cautious of chips simply modifying a signal and essentially fooling the ECU of the prevalent conditions. Anyway, I am learning that BMW has this engine de-tuned for emissions, driving friendly power (so you don't snap your neck from a dead stop) and economy. I am learning the diesel engine in the F15 is really meant to cruise/tour. It's quiet (thanks to the injectors), great economy (thanks to the VGT, injectors, tuning), has power at cruise (thanks to injectors, tune strategy, VGT) and very comfortable. My $.02...
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01-18-2015, 08:00 PM | #73 | |
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And how about that torque curve.... Dinan would be the perfect company to take this motor and make it fly with the way they actually tune. If they came out with it, I would be one of the first in line.
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01-18-2015, 09:10 PM | #74 | |
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I found it very interesting that my pickup's engine technology and the BMW's if very close. However, the BMW the level of electronics managing the engine is on a completely different level - actually, a different planet in a different galaxy. What kills the motor's horsepower is the EGR (exhaust gas recirculation) circuit. I removed this in my pickup and ran a bypass to fool the ECU. Overall operating temps are down, economy is up, power is up, performance is up, but most likely at a cost of increased emissions. If you have anything else like this for the F15, I would appreciate you sharing. Thanks again.
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01-19-2015, 04:28 AM | #76 | |
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Regarding the 'burnt plastic smell', I am pretty sure this is coming from the diesel particle filter cleaning circle. When it cleans, it smells a bit like an overheated engine and you will hear a lot of 'ticking' sounds. Do not believe this is related to the RC chip nor settings. All diesels do this JensM |
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01-19-2015, 05:21 AM | #77 | |
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01-19-2015, 06:04 AM | #79 | |
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01-19-2015, 09:00 AM | #80 | |
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Extra few horses at about 50mph is where I feel the most lag compared to my 535GT. Thanks! |
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01-19-2015, 09:45 AM | #81 | |
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Engine code Displacement Power, Torque@rpm Redline (rpm) Year N57D30U0 2,993 cc (2.993 L; 182.6 cu in) 204 PS (150 kW; 201 hp)@4000, 450 N·m (330 lb·ft)@1750-2500 5000 2010 N57D30O0 2,993 cc (2.993 L; 182.6 cu in) 245 PS (180 kW; 242 hp)@4000, 540 N·m (400 lb·ft)@1750-3000 5000 2008 N57D30O1 2,993 cc (2.993 L; 182.6 cu in) 258 PS (190 kW; 254 hp)@4000, 560 N·m (410 lb·ft)@1500-3000 5400 2011 N57D30T0 2,993 cc (2.993 L; 182.6 cu in) 306 PS (225 kW; 302 hp)@4400, 600 N·m (440 lb·ft)@1500-2500 5000 2009 N57D30T1 2,993 cc (2.993 L; 182.6 cu in) 313 PS (230 kW; 309 hp)@4400, 630 N·m (460 lb·ft)@1500-2500 5200 2011 N57S[2] 2,993 cc (2.993 L; 182.6 cu in) 381 PS (280 kW; 376 hp)@4000-4400, 740 N·m (550 lb·ft)@2000-3000 5400 2012
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01-19-2015, 09:45 AM | #82 |
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I just coded it and it works on mine. That said, I have DHP so I did not need to code for Sports +. I already had it. After I activated the Sports Transmission, i went to launch control and it was already active. This makes me wonder if I did not try Launch control properly before coding. Accordingly, Launch Control may be active with DHP in addition to the M line.
That said, if you want launch control, these codes work. My question is now if the Sports transmission coding will change my shifting. Regardless, Omar, you should add these to the cheat sheet. At least the Sports Tran and launch code. I cannot yet confirm if the Sport Transmission changes anything yet.
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01-19-2015, 09:49 AM | #83 |
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Is the F setting impacting your MPG at all?
Is the jump from E to F noticeable? Thanks for testing this for all of us!
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01-19-2015, 09:54 AM | #84 |
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Have you seen any significant change in you mpg going from E to F?
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01-19-2015, 10:17 AM | #85 | |
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1. How does launch mode work on the X5 50i? 2. What RPM will it launch? 3. What does enabling the Sport Auto Transmission do? - Perhaps this is not for US X5's as I have both Sport and Sport+ already. Thanks. Last edited by CERS 1; 01-19-2015 at 10:24 AM.. Reason: Connect the post to a user |
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01-19-2015, 10:23 AM | #86 |
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Looks as if only 2 members have the BMS tune for the 50i and one of them is plugged into his couch (LMAO @ this BTW).
I know the install on the BMS is much faster, its slightly cheaper and its has dials on each piggy back like the S2=X setting on RaceChip for adjustments. Just trying to see if we can band together for some side-by-side comparisons on the 50i? Does either piggyback mate to the vehicle or can you transfer them to another car in the future? Meaning if I use it for 2 years and turn in my lease, can I pull it off and sell it to another member for a couple bucks and it work their X5? |
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01-19-2015, 10:27 AM | #87 | |
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2. Not sure. It launches upon the release of the brake but it is fairly high. 3. Not sure unless it shifts the transmission to M line characterisitics. Still waiting to confirm. 4. This is for US models. Comes standard in M Line and possibly included with DHP as well.
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01-19-2015, 10:29 AM | #88 | |
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