🛠 Narrowband, Wideband, Bosch or NTK - O2 sensors explained | TECHNICALLY SPEAKING

hi guys well with all the recent videos that we've been doing talking about tuning and airfue ratio i thought it would be a great idea to introduce to you the newest haltech product the new haltech can ntk wideband unit [Music] so if you've been following along with our latest series of videos you'd be familiar with just how important it is to get reliable and accurate data from your wideband airfu ratio meter so for the more experienced tuners out there you'd also know there's a multitude of different wideband o2 sensors on the market the problem is they don't all play nicely together so you can't take a bosch sensor and use it with an ndk controller or vice versa in fact you can't even take two series of bosch sensors like the lsu 4.2 and the bosch lsu 4.9 sensor and use them with the same controller but rather you have to match your wire band controller with the specific sensor type that you have and with that in mind this video is going to be going through all the similarities and differences between how tech's o2 sensor offerings including the recently released anti-k can wideband unit but let's not get too far ahead of ourselves just yet the first thing that we need to understand is that broadly speaking there's two different categories of o2 sensors on the market there's narrowband sensors and wireband sensors and their use and application are very very different so narrowband o2 sensors typically have either 1 2 3 or four wires and they all work basically the same way the output signal flips from zero volts to one volt when the fu ratio goes richer than the stoichiometric air fuel ratio of 14.71 it then flips back to zero volts when the measured fu ratio goes leaner than the stoichiometric airflow ratio or 14.71 now this is important to know because it means that narrowband o2 sensors do not actually know and cannot actually tell you if an engine is at 13 14 ratio or 12 to 1 or 14 to 1 or any specific air fuel ratio for that matter it only knows two values that is lean of the stoichiometric airfue ratio or rich of the stoichiometric air to fuel ratio now if you haven't watched the previous video where we presented ignition timing versus few ratios effect on engine output power now is probably a good time to go and check it out because in that video we explain why selecting the correct air free ratio is so important and spoiler alert it's much less about making horsepower and much more about engine health and longevity so if you haven't watched that video hit pause now and check it out because it's a really good primer for understanding what information you need to be getting from your o2 sensor okay so if a narrow band o2 sensor can't tell us any specific f e ratios apart from 14.701 and we know from the ignition timing versus fu ratio video that running an engine at full noise with an airfue ratio of 14.71 is potentially catastrophic then what on earth do these narrowband sensors exist for like why do we have them well the very simple answer to that question is emissions now i'm not going to go into detail on how to tune an engine to meet specific emission standards here but broadly speaking to pass pretty much any emissions test you're going to need a catalytic converter in the exhaust the catalytic converter is made up of multiple materials each with a specific purpose of converting potentially harmful byproducts of combustion into harmless carbon dioxide water or nitrogen for the catalytic converter to work effectively it must be receiving a pulsating exhaust gas flow of mixtures that are rich and then lean of the stoichiometric air-to-fee ratio of 14.71 now incidentally this is exactly why in years gone by manufacturers would turn off o2 control under full load and high rpm not because the engine would make less power but rather for the o2 control to work it relied on the air fuel ratio oscillating around 14.71 which we know from the previous videos is far too lean for engine reliability at high horsepower levels getting back to narrowband o2 sensors what are they useful for well emissions control specifically they're very useful when paired with a catalytic converter to ensure that a vehicle's tailpipe emissions remain consistent what they are not useful for is tuning your engine which brings us to the other type of o2 sensor wideband o2 sensors now wideband o2 sensors typically have five or six wires and require some very specific electronic circuitry to control them however when controlled correctly y bend o2 sensors are capable of accurately showing air fuel ratios anywhere from 6 to 1 air fuel ratio to over 20 to 1fu ratio this makes wireband o2 sensors the only choice for measuring air fuel ratio when actually tuning your engine so let's take a look at howtek's current offering of wideband o2 sensors most common of which is this can connected wideband unit this unit uses the bosch lsu 4.9 wideband o2 sensor and has been the mainstay of haltex wideband o2 controller offerings for a number of years it's affordably priced it's reliable and comes in both a single channel and a dual channel variant now it's safe to say this unit is one of the world's most tried and true wireband o2 sensor controllers on the market today it readily and repeatably reads their fuel ratios down to 10.5 to 1fu ratio and when installed correctly has a long sensor life on most fuel types however this is where the limitation lies with this bosch 4.902 sensor when it's being used with fuels that are not petrol or gasoline and therefore ratios that are richer than 10.5 to 1 or 0.7 lambda using a bosch sensor under these conditions can significantly shorten the sense of life and that is where this guy steps in the new anti-k wideband controller it looks and interfaces with all haltech issues identically to the bosch wideband unit however the ntk controller does not use the bosch lsu 4.9 sensor but rather it uses the more robust ntk lza-08 sensor with a custom designed radial shroud to offer a much more robust sensor life at both richer mixtures and with alternate fuel types like methanol and race gas so the ntk wideband unit similarly comes with a single or dual channel variation and will read reliably all the way down to around the two to one air fuel ratio range with methanol drag cars that's really what you want now that's more than twice the range of the bosch sensor of course this comes at a cost then the ntk sensor and controller is a little bit more expensive than the bosch unit so let's assume you've purchased either of these haltech can wideband units let's take a look in the software and walk through how to set them up with an elite series ecu so both the bosch and the ntk wireband control units are auxiliary can devices which means they have their own control system and processor built into the control unit and they transmit the air to fuel ratio back to the ecu via communications protocol known as can making the connection to the ecu is as simple as plugging the can cable into the mating can connection plug that's built into your haltech flying lead or terminated engine harness now if you're not using a haltech wiring harness it's important to note that because the wireband o2 sensor controller do draw quite a bit of current you don't want to be powering up the wire band from the auxiliary can connection in the pocket of the top of an elite 1000 1500 2000 or 2500 ecu for that reason your can wireband will come with a power cable like this one that allows you to plug the can communications into the pocket cover but source power from a switched 12-volt ignition source elsewhere in the vehicle that is capable of supplying at least four amps per o2 sensor i'm going to walk through the software in both esp and nsp software variants and although the process is the same the menu structure is slightly different for the two software versions so i'm going to cover both here just to be safe once you have the unit connected to your ecu and you're communicating with it in esp software because the wire band controller is an auxiliary can device the first thing you need to do is go into the setup main setup and navigate to the devices tab here in the devices tab scroll down to the wideband controller boxes section and select the wire band controller that you have now you can see here there are two channel controllers that come in box a b c and d variations this is so you can monitor up to nine wideband o2 sensors on a single engine now that the ecu knows to expect a can y band to be connected to its communication bus you can go into the functions page select y band o2 sensor click on the input type and select can wideband controller click apply and ok and that's it you're ready to go using your new haltech can wideband o2 sensor and controller it really is that simple now if i was using nsp software the process would be the same however i would access the auxiliary can device setup menu by simply navigating to the haltech cam system in the menu tree and enable the wideband controller box 1 here i can now scroll up the sensors turn on wideband 021 click on the wiring that's come up in red to indicate that there's an error hit edit connection and select wb1 on the can network and we're done so there you go you now know the difference between a narrow band and a wideband o2 sensor you know what the purpose of each sensor is and you know why we might use each sensor type in different applications we've also given you a rundown of the two can wireband controller types that how tech sells and what the benefits and drawbacks of using the ntk sensor and controller is over the bosch and finally we've walked through how simple it is to connect and set up a haltec canned wideband o2 controller on a haltech ecu well i hope you've enjoyed this video if you did ring the bell icon to get all the latest video notifications don't forget to sign up for our newsletter for the most up-to-date pricing and product information well i'm matt from haltech and i'll see you next time [Music] you

Channel: Haltech

Views: 53,144

Keywords: haltech, ecu, engine management, tuning, oxygen sensor, o2 sensor, wideband o2 sensor, narrowband vs wideband, wide band, wideband sensor, a/f sensor, air fuel ratio, narrowband o2 sensor, wideband tuning, tuning with wideband o2 sensor, wideband o2, wideband o2 sensor explained, wideband o2 sensor kit, ntk vs bosch wideband, ntk vs bosch o2 sensor, ntk vs bosch oxygen sensor, ntk vs bosch 4.9, technically speaking, haltech wideband controller, haltech wideband o2

Id: SE4S6qGVzC4

Length: 11min 1sec (661 seconds)

Published: Thu Sep 23 2021