🛠 How to control Boost and Power | TECHNICALLY SPEAKING

[@haltech]

Just look at that horsepower, and what about that crazy boost..... Don’t get us wrong, we love seeing massive boost levels and huge HP numbers on a dyno graph as much as you but let’s be real for a moment - nobody wants ALL the power, ALL the time right? Being able to control your boost and your power is as important as actually making it and today we are taking a deep dive into the rabbit hole that is boost and power management. As this is a rather long video, if you want to skip to the section that you’re particularly interested in - follow the shortcuts below: 00:00 - Intro 00:30 - Car Overview 06:28 - Tech Overview 07:55 - First Dyno Run (wastegate pressure) 09:00 - How Wastegates work 15:00 - Managing Power with DBW throttle 16:10 - Second Dyno Run (with throttle control) 19:30 - Boost Control via ECU 20:50 - Closed Loop Boost Control Basics 39:50 - Third Dyno Run (closed loop boost control) 41:50 - Final Thoughts ----------------------------------------------------------- Brian's R35 Build Series: Episode 1: Getting ready for NEXUS - kzbin.info/www/bejne/hZulpJR8aJmHqZY Episode 2: Wiring it all in - kzbin.info/www/bejne/ZoeTYoWmd8xrjMU Episode 3: Configuring all the NEXUS functions - kzbin.info/www/bejne/j4XUmpeepqycd5o Episode 4: Dyno Tuning - kzbin.info/www/bejne/haW0hHudh7mgftE Episode 5: Shakedown and Track Tuning - kzbin.info/www/bejne/eaeyXpWprLKqn8U ----------------------------------------­---------------- For more Haltech goodness check out our: Website: www.haltech.com Facebook: facebook.com/HaltechEngineManagement Instagram: instagram.com/haltechecu

[@stevenhavick8579]

I'm curious if you can use a wheel slip vs max throttle position map as a power management. Would be similar to factory torque management

[@RGHTBrainDesignDrive]

Great video Scott! One thing I thought up that you could have added in is DBW Limiting vs. RPM to make a "restrictor" style tune on a vehicle. For instance, at the 300kW tune, we could blend Closed Loop Boost Control to overboost the engine and DBW 100% down low to make a wall of usable power, and then at the top end restrict back to 0% Wastegate Duty and DBW down to 35% as it landed to make a non-linear, flat power curve of 300kW across a huge range of RPM. While it wouldn't exactly be a safe approach as it's now putting more load on the engine at lower RPMs (when things break), and not ideal for traction situations, it would open up the doors to Power-Restricted Class type tuning (Spec Miata is a great example), and a great process in doing so. Thank you guys for continuing to move forward and developing. I'm proud to be tuning with you. -Ryan

[@rotory26]

Scott are you looking to drive Turbo Smarts Electronic waste gate now or in the future.

[@Procharged32]

No utuber explaines as thoroughly as Scott, really neat.

[@therustteam]

That's because he ain't no utuber. Tuner and developer first, utuber mayde 4th or 5th. Anyway you are right about presentation skills :) Cheers

[@25aspooner]

I read that wrong and I saw Uber! 😂 He’s probably not an Uber driver but he’d probably be great at that too!

[@CarShopTanoshi]

Absolutely the best explanation of this I’ve EVER heard. How on earth does Scott speak so well, for so long on such a technical subject. Not a single Um or Ah!

[@ACommenterOnYouTube]

Like that good old saying, what does a 1k whp Supra and a 500 whp Supra have in common ?? 10 sec time slip each. All that power and you can't keep it planted and you spin everywhere, what fun is that when your not going anywhere. Rather have less power and have 100 % traction ... No spin, just traction and pull

[@Relisys190]

Recently enabled boost control on my Haltech 1500 after tuning on 93 and then E85.. This video worked spectacularly to find the right settings and achieve my target boost pressure. Also, the boost came online much quicker. Fun stuff!

[@michaelevans7013]

Brilliant Brilliant explaining simplicity brought through for the simple man to understand.

[@AdinSLaboy]

good video such off good inf Scott I'm learning a lot with does video I'm downloading it now and used for reference 🤫✍️💪

[@zhnkbr]

I imagine that the turbosmart electronic wastegates are absolute game changers for boost control.

[@blackmesaresearch2]

20:00 This diagram shows the valve plumbed to the intake manifold. It should be plumbed before the throttle body. Otherwise you could see vacuum on the wastegate diaphram.

[@Dagowly83]

Cheers Scotty! I've been recently trying to set up closed loop boost, the vid explains it all perfectly!

[@haltech]

Great to hear!

[@amar-fm5qb]

great explanation. But if max boost desired was 14psi, why wasn't a 7psi (or similar) spring used? and why was the high end boost target not more than 14psi if the spring can handle about 24psi in this example?

[@Halfwalker]

Absolutely excellent video. More of these informative ones, that was really good. Please, please, please, make the CAN keypads available for the Elite 2500

[@Delpzie]

Learning everything from this series keep it up guys!

[@HarrodsGarage]

thanks Scott, that was great. thanks for so much information. Can't wait to get tuning on my Elite 550 in my Forester

[@shaun2072]

Really interesting, loved it.

[@jeepchrky]

“And that’s not….. well it’s fun” lol

[@manuelmontesdeoca2787]

Great video!! So intrigued, had to watch it again!

[@awdboosted]

Love this!!! Please keep doing these videos.

[@GREASEGARAGE]

Awesome as always

[@zmija1891]

Just Wow!! Thank you so much for this lesson.

[@terminator2149]

haha I love the pause you had at 420 hp

[@mikeymasi]

Really great vid mate. Well explained. Cheers!

[@davidt3196]

Great video as always. Love the throwback livery too. Winefield, Winfield, same, same

[@joshuaj.curtis766]

Absolutely mega. Great video. Thanks a lot

[@incolink]

On the "open-loop" base arrangement, you can use MAP as one of the table axis you then have feedback without PID .. on simple stuff this works fine and is easier to understand

[@NIcad7]

Brilliant video. Is there anywhere I can read up on how to set up different throttle maps and associate them to a switch?

[@bvward]

And here I was thinking closed loop was a type of carpet... Thanks, Scott.

[@synapticbit]

All that electrical awesomeness from Haltech, buttons and switches and Bosch distro blocks oh my… but what’s that 2x4 at 5:52 LOL

[@sardjantube]

This is long video from Haltech Scott - Tuning Fork, i like it

[@4goten]

Great control! Great video.

[@incolink]

I thought chopping it down to 35% would be way over kill ... you've got a real good feel for it .. Funny you say clippin the throttle on the lower power settings is NQR i think its totally the way of the future great video

[@Turbochargedtwelve]

Adding that restriction is going to make the engine less efficient so it burns more fuel and makes more heat than necessary. Depending on your use case you may or may not be able to accept that

[@incolink]

@@Turbochargedtwelve pfft 2 lbs of boost more than it needs is what is being made arguably unnecessarily .. Your not adding a restriction your just mapping one that's already there .. which has been the accepted combustion engine power delivery modulator for about 200 years .. also i bet heaps of circuit cars are using the throttle and a substantial pressure dropper(restriction) as this strategy would give better throttle response.

[@Turbochargedtwelve]

@@incolink I’m not sure I understand your argument. Yes some motor sports series require restrictor plates, venturis, ect for the purpose of limiting power and limiting throttle blade opening has the same effect as demonstrated here. You’ll see this used it series with power to weight limitations where the cars are dyno tested and weighed. It’s nice because you can play with that blade angle to hit your exact power target to the maximum of the rules. Spec series will use restrictors, no dyno test required just shove a plug in the intake and if the engine stalls it’s good. Still both make the engine less efficient. You won’t see either used on a mass produced car. Instead you see things like exhaust gas recirculating that injects inert gas into the intake stream to “de throttle” the engine without the pumping loss of a closed throttle blade.

[@beslansoltukiev]

Thanks! It is really useful content.

[@MitchTube]

Awesome work! Thankyou

[@Reaper_1994]

While I haven't used the Closed Loop Boost Control since I first got my Elite 1500 installed, is there a reason why when at part throttle, it would cause the turbo to overboost? Once I go full throttle and it starts to control the boost, it's fine. Just driving through traffic at 30-50% throttle, it's not working. I've been using open loop and using a table consisting of RPM vs manifold pressure and it has been incredibly reliable. I'm sure it could be better though.

[@nismofreak33]

fantastic video!

[@patrickhaines3609]

Hey guys, great video definitely keen to make the switch to closed loop on mine, wondering if there is any benefit to a 4 port solenoid?

[@horselog225]

Can you not pull out some timing to drop power or does that create its own issues. Awesome video too

[@slicktop2jz855]

Great video lads

[@haltech]

Thanks. Glad you enjoyed it.

[@tezzrterry7485]

Why not just go to Turbosmart electronic wastegates, controlled by the ECU?

[@capnthepeafarmer]

Would you be able to see pumping losses or pressure drop across a throttle body which may be too small, or too big for that matter?

[@timwhittall8989]

why do you change between pounds (imperial) and kws (metric)? Excellent video

[@haltech]

yeah... can't seem to win with that one, no matter which way we go, half of the viewers complain. using both doesn't seem to work either.

[@timwhittall8989]

@@haltech to be honest its the same in the UK.

[@5UPRAH]

Awesome video. As usual, any video you do with details is easily watchable! Are you feeling a bit under the weather? You look like covid bit you.

[@haltech]

Scott is so tall, the weather is usually under him.

[@krispykruzer]

Lol, Scott looking fit AF

[@timboers437]

Would it be possible to only limit the throttle after a certain rpm? or after a certain manifold pressure? so as not to affect power and response in the sub 300KW rev(&load?) range

[@marks7494]

when is the haltech going to release software updates to support the turbosmart e wastegates?

[@haltech]

When we're happy with the software we've written

[@marks7494]

@@haltech its that really an answer? If you hadn't come out at sema with nexus controlling it on the v12 maybe you wouldn't have people wanting to know when they could actually do it.

[@marks7494]

Maybe since you don't have the software for the nexus to control the e gates maybe you could explain how you did it? External drivers perhaps?

[@Turbochargedtwelve]

I’m guessing they mean their control over that hardware is not behaving to their liking. So it functions, but maybe not as precisely or reliably as they want before they release it for public use. Personally I’d say thank you for having a high standard of quality and not releasing stuff half baked.

[@ralphmenta249]

So there is so much money into this car, why not use e-gates? I havent used them personally, but from what I have seen, they are very precise. I am just curious is all.

[@rocketscienceracing]

so where is the extra 4 psi that the turbo is making, that is not going into the manifold, going? isn't it stalling the turbo?

[@PANTYEATR1]

Scramble boost button = Knight Rider's Turbo boost button😏

[@bigbothoee8617]

What has happened to adaptronic ? No news is the company still releasing product?

[@david92xj]

What if the max derivative is set too low?

[@albertt7784]

Why is there a piece of timber stud in the car? @5.52 in the video

[@haltech]

for clamping video lights onto.

[@ACommenterOnYouTube]

its called a WOOD stud LOL

[@alitoroganan2442]

lads how do you wire a boost solenoid into a platinum plugin, please help

[@haltech]

Hey! Contact our support team via www.haltech.com/support They'll be happy to help you out :)

[@bedlamite42]

Obviously, the prop rod was removed to save weight.

[@danielflack7902]

How many times has another company tried to poach Scotty away from Haltech.

[@leeedwards3933]

Love this Channel but could you PLEASE TALK IN BHP Figures Kilowatt i;m from WALES UK and have to do the Conversion in me noodle [Head] Which is OKAY but would be easier IF you could SAY KILOWATT=BHP That would be GREAT .

[@coreyw427]

Better to just use an electronic wastegate

[@single_cam9199]

Your wastegate in the diagram is opening wrong

[@neilr1556]

Seat 💺, not chair 🪑 😅

[@ACommenterOnYouTube]

Bathroom, not John LOL

[@MrWilliam.Stewart]

Control is nothing without power.

[@JainZar1]

Is there a known Stability function for PID-Boost controlling or is it largely guessing? From the compressability of the air alone, it should be a mess of P-T1 elements.