🛠 How Self Tuning Works: Short Term vs Long Term Fuel Trim | TECHNICALLY SPEAKING

One of the great things about tuning in volumetric efficiency mode is that once the fuel system is set up correctly - the ECU almost tunes itself. And that’s exactly what we are going to explain in this video.
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Highly recommended videos that further explain today's topic:
AFR vs Ignition Timing: • 🛠 Mythbusting: Which i...
Tuning with Volumetric Efficiency: • 🛠 Volumetric Efficienc...
Volumetric Efficiency Explained: • 🛠 Tuning with Volumetr...
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[@haltech]

Welcome back! One of the great things about tuning in volumetric efficiency mode is that once the fuel system is set up correctly - the ECU almost tunes itself. And that’s exactly what we are going to explain in this video. ----------------------------------------------------------- Highly recommended videos that further explain today's topic: AFR vs Ignition Timing: kzbin.info/www/bejne/l3W2i5uvappkmNE Tuning with Volumetric Efficiency: kzbin.info/www/bejne/q4HNeoZvicxraa8 Volumetric Efficiency Explained: kzbin.info/www/bejne/e2qZo3V_r7-Sqac ----------------------------------------­---------------- For more Haltech goodness check out our: Website: www.haltech.com Facebook: facebook.com/HaltechEngineManagement Instagram: instagram.com/haltechecu

[@daledenton9246]

Circle back is that with two trailer Park girls around the outside. 😁👍🏻

[@jordanslingluff287]

So would this be able to work on a boosted car too? Like if set the AFR @ say 10.5 when in boost would it fill in the pieces and keep it safe at the sametime?

[@SIRICKO]

Put ChatGPT in this. =)

[@salloroc20]

The "apply to base map" button is gold!

[@speedcircuit]

Came here to say this.

[@rickbussel9532]

This is exactly what I need in my life

[@HarrodsGarage]

Yes yes yes

[@hoonaticbloggs5402]

I can see my two banks of ltft numbers , but can’t see the apply to base map button ? Any help ?

[@nismofreak33]

Its amazing how friendly ECU's are now days. People would have killed for features like this 20+ years ago!

[@wiwelwiwel9141]

Well - it was present 20 years ago, or pretty damn close to 20 years, juts not in the aftermarket ecu's but in the ecu's from Bosch/Siemens/Sagem and so on :)

[@ThatOneCatNyx]

@@wiwelwiwel9141MS45.1 and MS43 are the ones that come to mind (Siemens)

[@crackpotfox]

​@@wiwelwiwel9141I've never understood why people put aftermarket ECUs in when there's a perfectly capable oem one right there... unless you want special features, there's no reason not to just slap a tune on the factory computer.

[@rodrigobrasilia7506]

@@crackpotfox because is difficulty and not friendly hack a oem ecu. If you have a different car (not like audi/vw) with no map packs on winols, you are alone to turbo your NA original. Probably engine will break on original ECU. Thats why i love aftermarkets ecus.

[@crackpotfox]

@rodrigobrasilia7506 What are you talking about? There are tons of people running multiple times factory power out of factory ECUs out there. I'm running the factory one on my supercharged mustang. It's extremely easy to flash a tune vs rewiring the car for a new one.

[@FightingSportsMedia]

I came for the information but stayed for the american pie references.

[@haltech]

LOL - see it's always worth hanging around till the very end of our videos!

[@IanB22]

Great video - REALLY helpful for the home DIY guy's who picked Haltech because of these video's, the phone support, and the true desire your company has to the DIY community who work on their own projects and don't have a rolling road to tune!

[@haltech]

Thanks 👍

[@JainZar1]

Wow, a Stiffler's mom joke! That is old, but gold. :D

[@blockbertus]

Just like... you guessed it... Stiffler's mom! ;D

[@f1hotrod527]

I do prefer to just hook up all the wires, put the ECU in learning mode, floor it and let God take control. Jesus take the wheel.

[@haltech]

Well, that's one way to do it and who are we to argue when Jesus is at the wheel?

[@christianmgtow4744]

Not to say that we would see the good Lord upside down in a ditch but when you go from steering a camel to 1500 unnaturally aspirated horsepower it might be an issue...

[@Mp-jw1qg]

@@christianmgtow4744 jesus has a 7 second cage, hes good.

[@Mp-jw1qg]

@@christianmgtow4744 jesus is a rotary guy lol

[@dragan3290]

You should not bag Jesus! He would have the 10.4 litre with over 1000 hp!

[@QuickAF]

The ability of these guys to explain really technical info gets me every time, been reading and learning about tuning for curiosity sake for years and their info is the best so far

[@zac2384]

Very cool how you give a real example with an actual motor

[@Danger_mouse]

Nice one mate 👍 Love that you guys back your products with real info!

[@Martinsix]

Wow, just wow. This was the explanation I was looking for years :) . I love these videos guys, slowly understanding more and more about how to tune the engine. Thank you!

[@awdboosted]

This was awesome!! I had that "Target oscillation amplitude" set and was wondering why my o2s weren't steady. Great video guys!

[@bigmack2141]

Best explanation of a subject I have seen ever. This guy is a great communicator.

[@HarrodsGarage]

Awesome video Matt. Can’t wait to get my haltech in my forester

[@OutAboutOffroad]

I think we owe Haltech's self tuning to JC Jimny's project being such a success! Cheers for the remote support on getting that going, too.

[@betty123ism]

Wow. I did not expect you could set it up to use a catalytic converter. Its really neat to know that feature is there. Anyway, I really appreciate all these videos. They're all really well done and very helpful.

[@canoPR]

I'm no tuner but this was a great example, now do it for the Elite :)

[@ibeapirate123]

It should be essentially identical

[@shadybeatsCarbon]

I'm speechless by this, it sold me on upgrading my Platinum Pro Plug-In in my S2K, will be very helpful when I turbo it.

[@KayneWalshNZ]

Yessss thank you for this love these kind of vids! Actually understanding what’s in my car 😅

[@AddictedDrummer]

This is so cool! I literally laughed out loud in disbelief. Cant wait to get Haltech in my ride.

[@UzumakiGarage]

Great to learn this, Thanks Matt. and yes I rang the bell.

[@beslansoltukiev]

Thanks for the video, it’s so useful and interesting👍🔥

[@nzdatsports9659]

fantastic explanation . thanks .

[@tylerl2690]

So much good info in this video

[@shaun2072]

Brilliant. Really good.

[@dallasvanwyk]

Excellent video

[@vanhap]

really helpful, thanks

[@lockjawjak]

Long term trim is the number one reason I tell people to not bother with old ass standalones and get a modern one with that feature, it saves heaps in dyno costs as the car tunes itself as you drive it to the tuner!

[@wobblysauce]

Gets it in the ball park a lot sooner for sure. Or the Sloppy way with the new build input what you got on a new build beep boop and gameboy tune done and if everything is wired mostly right it starts up and runs. So much better then the older systems.

[@lockjawjak]

@@wobblysauce Yeah I loaded a 2JZ base map onto my 7M and setup all the sensors and custom stuff and it started and slowly taught itself to idle and fuel through the rpm range. I obviously didnt go into boost but I drove to the tuner and he only needed a few runs and she was good

[@jinxtacy]

I think the effort put into learning how to tune in a way that helps the emissions is really cool. After a decade with an uncorked rotary, I really appreciate catalytic converters a lot more I want to incorporate them more into my builds. I don't know why, but OE systems just seem to be on a completely other level then what is the offered in the aftermarket unfortunately.

[@jhauna1]

Great video man, informative content! Btw I’m going to watch American pie now lol!😁

[@neilr1556]

I remember when tuners were stubbornly not going over to VE from Injection time.....now it seems like common place

[@lukeschannel650]

Super helpful! Coming from a Microtech ecu….. it’s night and day

[@freestyleskyline]

Hey, thanks to your awesome videos, reviews, and company transparency, I'm now the owner of an elite 750 and 2000! Thank God for black Friday sales!

[@haltech]

Nice:) What cars are they going on?

[@freestyleskyline]

@@haltech 1986 Toyota z20 soarer with a 1jzgte swap, and a 1977 Celica that ill either run the 1gzfe century v12 on the haltech 2000, or possibly the 1uz since I have that one already setup

[@haltech]

The 1UZ/2UZ engines are gaining popularity of late. Good rides - both of them:)

[@freestyleskyline]

@@haltech I have a bunch of old Toyotas (ie 20-40 years old) so I'm hoping I can figure out the haltech system quickly and then have them all running haltechs for simplicity sake.

[@TheEvilTwinCG2]

For my bday, my gf bought me the 2500 Elite… can’t wait to install it and tune my 98 Honda Accord!!!!! lol some would say “haltec for an Accord?”

[@oldcarnuts6809]

Fantastic, ive been dreaming of such wizardry for my petrol 80 series, but its auto🤔

[@derrickgarcia303]

Stifler’s mom😂. Thank you for all these videos.

[@jasonhuber3236]

I wish these ECU's had inertia / g-force measurements to learn how to do this with ignition timing. Maybe an inertia sensor w/ GPS so the ECU can see speed vs force. Street tuning on another level lol

[@Rollin8.0]

You just use rate of change of vehicle speed by monitoring the speedo input. G sensors wouldn't be as accurate in real life on road testing.

[@dylanzrim3635]

Pretty sure they have a module for gforce

[@jasonhuber3236]

@@Rollin8.0 Actually, inertia sensors in conjunction w/ several GPS connections is exactly how G-Tech Pro utilizes their measurements for their units essentially turning your car into a road dyno. While it may not be as accurate as a dyno, it does give pretty good measurements you can use for tuning granted the tires don't spin. Tire spin is where speedometer monitoring would be an issue. Maybe a stand alone could utilize GPS, inertia, knock monitoring, vehicle speed and maybe even using traction control data to tune ignition timing tables. It's just an idea, likely will never happen.

[@jasonhuber3236]

@@dylanzrim3635 I haven't seen one.

[@turb0gate]

I so need to switch over to an Haltech Pro 2500. Added to my wishlist. My AEM v2 seems so outdated lol

[@david92xj]

Can you go into this kind of detail on the PIDs for O2 control?

[@Jdmjunkie001]

Could you do a video on tuning lean burn ,while cruising, for efficiency?

[@Deiphobuzz]

Just lean out the tablesquare that you use at target rpm?

[@bvward]

Thanks, Matt! Helps take the fear of the unknown away! Does the wide band have a saxophone player?

[@haltech]

Not as yet, we can't decide whether to go alto or tenor.

[@tylerandrews55]

Just tuned my boosted stroker RT that was a fun especially with a OEM ECU, these Haltach units makes things look to easy

[@unchartedgroupielove]

This makes me REALLY want to chuck a elite 2500 on my v8 mercury outboard. But I'm not sure how you would interface to the accelerator binnacle, as it's DTS

[@maxsinventions8913]

Hey Haltech, which Haltech should I get on my turbo 4AGE? It's a Borg Warner EFR 6258, with a speed sensor and Coil on plug. Plan to use MAP sensor for intake. Also a quality wideband.

[@Ipds70GltR]

Fuck yeah, thank you!

[@haltech]

Fk yeah, you're welcome!

[@dylanzrim3635]

Will it self tune a TBI setup? Or will the code not like the constantly active duty cycle.

[@Jamxknife]

I was bummed out I got a haltech until I started tuning my own car!

[@vanoscrap6296]

so how do you set the target AFR table in the first place? Cuz if I understand correctly, that's the key of everything here.

[@charlescamen5225]

under what conditions can the "Apply to Base Table" button be pressed. As I am aware it cant be carried oout while the engine is running, but when should it be applied, ie ignition on but motor not running??

[@flattratemaniff7554]

I feel like the Elite 2500's short term doesnt work as efficiently as this Nexus example?? Or is it the same?

[@thatoneguy454c]

Will this ECU support catless setups?

[@michaeldeschenes8030]

I always have to turn my o2 control off and back on to make the apply to base table button work. Anyone else experiencing this?

[@8300rpmallday]

Does the platinum pro have this feature

[@RYves-dd4ky]

Really interesting, is your device writing on the ecu ? Should be good with a fuel sensor... To do the same with fuel👌🔝👍

[@haltech]

This device IS an ECU. It is a replacement for the factory ECU.

[@campervanbug7658]

Do you have four bank systems?

[@badrul541]

Can i use ve tuning in sprint500??

[@davidhopkinson2971]

Excellent content yet again, are there any base maps with VE set up so we can have a play 'offline'?

[@bazzaf246]

You can download nsp or esp (haltech software) for free on the website, it has a huge amount of basemaps to choose from and play with, if that's what you are after 👌

[@Mp-jw1qg]

will it self tune vvt/vanos ?

[@pepelapew2724]

I will like to see how a carburetor compare to electronic fuel injection.

[@AdrianMontana]

Does the long term self learning map always need to be manually applied to the base table with the haltech software/laptop? And...does self learning only work when tuning in VE or also when using TPS for tuning? I have an 8 stack v8 with dual wideband and its been tuned via TPS. Wondering if VE would be a better result if tuned correctly?

[@AdrianMontana]

@Matt Wright thanks for the detailed reply!

[@freestyleskyline]

*Stifler's Mom* approved this message

[@guyconnell2250]

My question is this: do the LTFT and STFT changes get applied to only certain areas of the VE table as needed or do the trims apply globally across the whole map?

[@jsquared1013]

If I remember correctly, the LTFT and STFT values are unique for each cell of the table. So a cell at 3500 rpm and 0 psi would have its own LTFT and STFT values, different from those at 4000 and 5 psi, for example.

[@hieronymus..bosch8532]

I realllllly regret going with the holley hp system. I have spent $2500 trying to tune it & no one could figure out what was going wrong. From not communicating to not seeing a rpm signal & even the tune disappearing after the car comes back from the shop . It also doesn't fit with type of car i built & has way to many drag racing parameters that are useless to me .

[@hoonaticbloggs5402]

Is VE good for independent throttles or is that best done with TPS? How about a video for us ITB guys ?

[@nismofreak33]

Use TPS, or alpha-n for fueling on ITBs. The map signal is inconsistent vs throttle openings.

[@iJakku]

I'm interested in the elite 1500 for my rsx. Essentially all stock other then a k&n filter in stock air box. Once the base map is loaded, can I just run the car how it was before since it isn't modified? Slowly modding the car for a tune later.

[@haltech]

The best thing to do is to contact our Tech Support either via phone or via email ([e-mail]). One of our tech guys will be able to recommend the right ECU for your RSX and even provide you with a base map:)

[@ifluro]

I've got an unused bung after the cat. Is this sufficient for a wideband sensor or is it better to put a new bung closer to the engine?

[@081588101]

Put it as next as possible to the exhaust ports or its useless if you only use one.

[@user-iz4lo5qr9x]

Doesn't the factory ECU do learning by itself ?? I have read about needing a car to "relearn" after the battery has been disconnected ?

[@ruzzzlan]

I am assuming it takes out the Acceleration Enrichment trims out when writing a long trim map?

[@lucapolizzi2348]

​@Matt Wright does that mean that the acceleration correction should be turned off?

[@aklinfrancis8671]

My shark mouth gallant has a wire fault it has a high idle all d times n like d coils fires all d times

[@dcollo7800]

Does the Elite Pro for Barra come with software? License? Add ons? Sensors or harnesses?

[@haltech]

Our Software is free to download from our Website. No Licence needed. It plugs in to the factory harness and uses factory sensors.

[@bryanne274]

Betcha you wont make a D-CVVT video :)

[@cossavard]

Is this feature available for the platinum pro for the RB series engines (HT055101)

[@haltech]

Platinum Series still have the long term learning feature it just works slightly different than the one described in this video.

[@capnthepeafarmer]

Is there any long term damage if you never see a dyno and just use this learning mode long term?

[@Ryan-hf9qz]

From my limited understanding, isn't the trim turned off over a certain load?

[@bazzaf246]

I say no, as long as you start with a rich biased ve map and a soft timing map, don't thrash the crap out of it for a while it will be fine, you won't be able to get MBT/maximum power in every part of your rev range though without a dyno.

[@darianistead2239]

🤔.. I bought a haltech elite 550 with premium loom and haltech wideband controller to run the b6t in my '86 mazda familia bfmr, it has mx5 cas and yaris cop to run sequential fuel/ignition, it's all wired in ready to go but have since decided to run it on E85 with flex sensor and long term fuel correction. So, I also have a 78' bugeye 323 that I've put a S5 RX-7 Bridgeport turbo in and am looking to get a 750 elite and premium harness for it, then swap ecu's over so I have the couple extra functions I want for the BFMR. Is it as simple as as swapping over ecu's or am I missing something? I don't need anything special to run the rotor so I think the 550 should suffice. (safe, fat and retarded in a light car won't matter when it's all about the braps and flames🤣)

[@darianistead2239]

@Matt Wright No, I haven't checked out the lastest updates but definately will now. You blokes at Haltech need your blood bottling, love your work

[@SLYDIT]

Except you need to have a decent 02 sensor delay setting which is often not understood

[@oskjan1]

I was thinking about that. I think one would be wise to modulate RPM/load carefully and purposefully before commiting the correction to base. Quick changes in running conditions might assign STFT data to adjacent cells because of delay?

[@Quantum369Mechanic]

Will this program fix my stock Toyota Camry with a 2AR-FE? The gas pedal is so sensitive it should just be called a light switch, and the transmission shifts up into 6th at 30mph. Taken it back to the dealership three times and they say it’s operating as designed.

[@haltech]

The NSP only works with Haltech Elite and Nexus series ECUs.

[@Quantum369Mechanic]

@@haltech Thank you for your time and update! I’ll take a look at what Haltech products could improve my Camry.

[@ifluro]

Any chance of an ecu giveaway competition?

[@haltech]

We usually have one mid-year so you gonna have to wait a bit....

[@petelattimer6808]

@@haltech anything available for DIESELS yet? everything seems to be aimed at PETROL engines currently

[@royferntorp3575]

Why do some LS and LQ engines seem to un-learn themselves? Is it sensor issues or a rubbish ECU? Don't know where to start. OBD2 not coming up with any bad codes.

[@scubagto420]

Is there a class I can take that will teach me everything about the elite ?

[@haltech]

HP Academy has a whole range of courses on EFI tuning and specific Haltech Elite courses as well. www.hpacademy.com

[@joellopez-mp6yg]

“Just like Stiffler’s mom”… 😂

[@WV591]

how do you erase the damn long term and force it to relearn

[@rafgg1904]

I wish the ecu would tell me how much power I'm making lol

[@Deiphobuzz]

Plenty of phone apps can tell you a pretty accurate figure. Weight, engine size, rpm data, speed, accelerator sensor data is all it needs basically.

[@haltech]

or you could just post a picture of your car on FB and read the comments....

[@Ryan-hf9qz]

I thought tuners just downloaded a generic file and fiddled with a few numbers to make it look like their own?? It's a joke 😅

[@alenmihelcic8267]

I understand nothing ☹️

[@pepelapew2724]

Me to

[@mandytuning]

Missing Matt

[@badrul541]

Stiflers mum qoute