What is the difference between NOXEM NOx emulator and OEM NOx sensor? But, understanding, that INPA is not available in dealer centers, and also several diagnostic sets (ICOM) are performing only after ISTA, I decided to try out this – official – tool. DME, measuring the momentous speed of the flywheel, measures the efficiency of each cylinder and, knowing, in which cylinder the fuel burns in the exact moment, knows, how to calculate relative contribution (comparing to other cylinders) of a current cylinder. Please use part numbers provided to confirm fitment to your car BEFORE buying, incorrect purchases are subject to a 25% return surcharge. INPA uses the same script for N43 and N53 series engine – the “mess” with cylinder order displaying us guaranteed – there is a menu, where the cylinder order of N43 series engine don’t matches nor firing, not placement order! ISTA reads all information regarding car’s configuration and chooses correct order for cylinders (or at least – so would the software of dealer’s level supposed to work). And, for example, for the “line engines” numbering is started from the front of the vehicle. When the “polarity” and scale of Rough run data are clear, we have to identify, in what order cylinders are numbered. In the image: ISTA Rough run data (ECU call-up menu). What to do in a situation, when, for example, DME is intended for use both of 4 or 6 cylinders (for example, MSD80)? My observations show, that ISTA usually interprets the data in the following way: a) increased mechanical efficiency: indication <0; b) decreased mechanical efficiency: indication >0. Let’s start with basic things: Rough run data display mechanical efficiency of each cylinder. Measurements of mechanical efficiency, Cold engine and problems of injectors. Are there any ways to see the “health status” of the NOx system? F10/11. Part 2, Importance of the service procedures. ISTA doesn’t show adaptation status of the flywheel – unfortunately, unadapted flywheel could be one of the reasons, why ISTA shows incorrect Rough run data. N43/N53 E and F series, E series. The menu states, that the injector is turned off, but the engine performs as before; as we see, possibility to exit the ECU call-up menu is turned off; 2. At first – to evaluate, the performance of which cylinder is disturbed (less efficient), we have to understand (clarify), which data are displayed (smaller efficiency is an indication, increased above 0 or decreased above 0) and have to understand, how the cylinders are measured. Desulphation of NOx catalytic converter using ISTA D/+. My problem is, INPA recognises my injectors in say cyl 1,34,6 (2 and 5 obviously not used) Now I know that the cyl numbering goes from front to back, so 1 is closest to the radiator, 4 closest to the dash/back on the engine. It is easier (more logical) to create all software performance. times – that’s why, when talking to Rough run, I never mention absolute values (without connection to 0 efficiency they will not give any information). • BMW 1 3 SERIES E81 E82 E88 E87 LCI E90 E91 N43 ENGINE CYLINDER HEAD ROCKER COVER. Usually DME measures time – how much times passes, while the flywheel carries out sector, dedicated to each cylinder, that’s why usually reduced (<0) Rough run data value means – flywheel has turned faster, mechanical efficiency of the cylinder is increased. Enter a BMW fault code (P or hex), complete the Captcha, and click "Search" P-Codes will start with a P and are usually generated by generic scanners. £49.99 + P&P . Problems of air-tightness, Idle. A Stratified charge doesn’t reduce fuel consumption? Why? 4 cylinder inline DOHC 16v Valvetronic petrol engine, 4 cylinder inline DOHC 16v Direct Injection naturally aspirated petrol engine, 4 cylinder inline DOHC 16v Double VANOS petrol engine. Dealers attempt to “sketch” you for EUR 6000? The N43 B20, N45 B16 and N47 engine variants as fitted to BMW 116i and 118i vehicles can suffer camshaft cap failure following faults which can cause the timing chain to either jump or break. I'm about to do a replacement on my N43 with 4 new injectors. BMW 1-SERIES ENGINE ROCKER COVER CYLINDER HEAD 8892682 E87 120 2.0 DIESEL (2008) £39.99. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. N series. F10/11. I deliberately use the term “usually”, because not the developer of DME or INPA/ISTA doesn’t guarantee exactly such interpretation. Accordingly – it’s possible to evaluate, which value will correspond to the cylinders if they will work with, for example, +/-5% unevenness. The procedure is simple – again, one by one, turn off the cylinders (using INPA menu) and by Rough run data check, in what order they are switched off. N43: 4 cylinder inline DOHC 16v Direct Injection naturally aspirated petrol engine: petrol: 1995cm3: 2007-now: N45: 4 cylinder inline DOHC 16v Double VANOS petrol engine: petrol: 1596cm3 - 1997cm3: 2004-now: N46: 4 cylinder inline DOHC 16v Valvetronic petrol engine: petrol: 1796cm3 - … Turning off the first cylinder, it’s Rough run data showed +7.0 units. Stratified charge performance check, NOx sensor. This value can be significantly different for different versions of DME! If the learnbit is not colored, perform braking with an engine in overrun mode (4st gear from 100 .. 110 km/h) for at least 5 seconds – till learnbit gets colored. Typical situation in case of damage of the NOx sensor, Intake manifold. Disconnecting the ignition coil of the 1st cylinder can see, what value INPA shows when cylinder efficiency is 0. • Part 1. INPA uses the same script for N43 and N53 series engine – the “mess” with cylinder order displaying us guaranteed – there is a menu, where the cylinder order of N43 … I can say from experience: around +/-5% efficiency jittering is normal to the used engine. Re-adapting of the automatic transmission, The problems of the injectors and misfires, Car with N57N engine and very low mileage, F10/11. Of course, if corresponding INPA loader is used repeatedly, it’s no need to check the cylinder order – it’s enough to check your notes or recall your memory. 6 cylinder inline DOHC 24v VANOS petrol engine, 6 cylinder inline DOHC 24v double VANOS petrol engine, 6 cylinder inline DOHC 24v Valvetronic, Double VANOS, aluminium/magnesium petrol engine, 6 cylinder inline DOHC 24v Direct Injection naturally aspirated, Double VANOS, aluminium/magnesium petrol engine, 6 cylinder inline DOHC 24v Direct Injection Turbocharged, Double VANOS, aluminium/cast-iron petrol engine, 6 cylinder inline DOHC 24v Direct Injection Twin-Scroll Turbocharged, Valvetronic, Double VANOS, aluminium petrol engine, V8 DOHC 32v Valvetronic, Double VANOS, aluminium petrol engine, V8 DOHC 32v Direct Injection Twin-Turbocharged engine, V8 DOHC 32v Direct Injection Turbocharged, Double VANOS, aluminium/cast-iron petrol engine, V12 DOHC 48v TwinPower Turbo, High Precision Injection, Double VANOS, aluminium petrol engine, 4 cylinder inline turbocharged diesel engine, 6 cylinder inline DOHC 24v turbocharged diesel engine, 6 cylinder inline variable geometry turbocharged aluminium common rail diesel engine, V8 common rail DOHC 24v turbocharged diesel engine, Motorsport/S - Engines produced by BMW Motorsport GmbH. Accordingly – the task of “arrange cylinders in the correct order on the screen” lies on diagnostics software (in our case: ISTA/INPA). How can offer a diagnostic tool, which basic functionality doesn’t work? What’s the point of just simply to turn off the injector? Short conclusion – ISTA (Main menu: Vehicle management/Service function) IS NOT suitable for analysis of Rough run data. Note: in the bottom part of the INPA menu the status of flywheel adaptations is visible. Even more – we can try to find a leaking injector, turning off the engines one by one and evaluating Lambda, which is reported by wide-band Lambda probes – more information here. What are the main differences between NOXEM emulator and ‘’usual’’ emulators? I have a question to BMW AG – if I cannot see Rough run data, Lambda values, and other information, while any component is triggered, so – WHAT’S the point of such triggering? For example, ISTA D, version 3.51.13, using diagnostics module of MSD80: a) when trying to turn off the injector of cylinder No.1, menu shows, that the injector is turned off, but in reality, it’s not done; b) trying to turn off injectors of the 2nd and 3rd cylinder – some of them are turned off, but, when trying to turn off the injectors of cylinders No.4 .. 6, the error message appears; c) even, if the injector of any cylinder is successfully turned off, Rough run data can NOT be seen, it means, if they were chosen to display, this selection is canceled, and it’s not possible to repeatedly choose the display of Rough run data (while the injector is turned off); d) while any of injectors is turned off, it’s not possible to exit DME menu, to choose Smoothness menu on Service section (Main menu on the top of the screen). Stratified charge: disabled. It’s interesting, that INPA stops displaying Rough run data, as soon as DME confirms, that it’s not idle mode anymore, instead, ISTA (from the Main menu) continues to display data also till higher RPM (to 1500 .. 2000 RPM). Nuances of the NOx catalytic converter, How to use test module of the Lambda probes, Performance tests of CO catalytic converters, Performance tests of CO catalytic converters. And at last – I’ve identified cases, when (obviously, by human factor/result of mistake) the cylinder order even for the N52 series engine don’t matches nor firing, not placement order! Your IP: 22.214.171.124 This is a small difference between cylinder efficiency and subjectively the engine works very evenly (no permanent vibration observed). Stratified charge performance check. .. 6. 6 cylinder inline SOHC 12v petrol engine. Attention: INPA offers (and usually this menu works, unlike ISTA) turning off of cylinders (injectors). Around +/-5% is the threshold, which as permanent (not compensated) difference is acceptable to the engine with Valvetronic (DME of MSD80 type works slightly different – they try achieve total compensation of the mutual efficiency of cylinders – for these DME Rough run data regularly change “polarity” – it means, they are inclined to, if DME works in full functionality mode). In INPA Rough run menu, learnbit (Status: Segmentadaption) of flywheel adaptations has to be colored – only then Rough run data of cylinders will show correct values! It’s important to make these calculations – for some software releases absolute values of Rough run data differs for even 100 (!!!) In first case it will be: +/-0.4; in second: +/-0.01. ISTA: as for this tool the turning off the switching of cylinders is not available; to find out, how the Rough run data are to interpret, we have to do the following: a) open ECU call-up menu, choose Rough run data for displaying; b) take off the decorative valve cover, turn off the ignition coil (remove the connector) of the 1st cylinder for short time (several seconds); c) observe Rough run measurements for cylinder No.1 (whatever the displaying order of cylinders would be, 1st cylinder always will be a 1st cylinder of the 1st bank). Short version – I don’t understand, how BMW AG can offer to its diagnostic specialists a toll, for which during several years very gross mistakes are not corrected? Unfortunately, Rough run data of many DME versions (by efficiency 0) exceeds data, displayed in ISTA Main menu (displaying range -200 .. +200), which means – unfortunately, it’s not possible to calculate, what efficiency would correspond, for example, +/-5%. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices.
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