Porsche's Anti-Lag System Doesn't Use Any Fuel

How Porsche's Dynamic Boost Works - Eliminating Turbo Lag

Porsche's Dynamic Boost is a function designed to minimize turbo lag and improve throttle response for Porsche turbocharged engines. The system works by maintaining the throttle valve fully open when the driver lifts their foot off of the accelerator pedal. As a result, there's an increased amount of airflow through the engine, minimizing the amount of boost pressure that is lost.

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[EngineeringExplained]

Answering the two most common questions!
1). Does this eliminate engine braking? Yes, while the throttle is left open engine braking is nearly eliminated. You use your brakes to slow you down when driving (or braking) fast, not the engine, so this is no problem. Engine braking will be like normal in most scenarios, just not when you're driving hard (in sport mode) and immediately lift.
2). Won't the engine run lean? No fuel is injected, none! Zero. So the air fuel ratio is infinitely lean, but this isn't a problem because nothing bad will happen without any fuel present.

[trickylifts]

Easy method: full throttle around corners with no braking.

[spyrost.]

hey can we get a video with a summary of sorts showing all the different anti lag systems out there or at least the most popular and talk about their effectiveness kind of like the one you did about turbo and superchargers quite a while back.

[WarriorsPhoto]

One of your best explanations ever. Sometimes, the explanation is so technical I get incredibly lost. But, this was one was easy to follow and understand. Thank you.

[amirmograbi]

This concept makes sense, however in this case I would've appreciated if you went a little more in depth. Hopefully you could make a follow-up video if there's enough demand. There are so many questions, for example when does the throttle valve actually close? How does it differentiate between the different scenarios needing to close vs not. Does this eliminate the need for a blow off valve ? How does this effect engine braking? Thank you for making these videos, they are super interesting!

[AugustusTitus]

That's the longest video to explain the smallest change and how a simple change can make such an amazing impact. Thank you! :D

[Silvermanav]

Does the fact that the throtle remain open means that there is less engine brake ? (because no negative pressure)

[tristianbilly]

The quality of your videos have gotten so good. I must say

[NYTA]

A similar system was used in Formula One, but for a different reason. There was a period of time when F1 teams had the exhaust exit just in front of a diffuser to produce some additional down force. They kept the throttle open to keep the flow or air moving through the engine even when the driver lifted.

[siraff]

Looks good. Another side effect of this will be that air still passing through the turbines too so the turbo's not only have an easier time of spinning but still something to help them do so. Infact they're only missing the gas expansion so they could hold quite a large percentage of their airflow for a reasonable time.
I can see this system making a noticable difference to throttle response when you're only off throttle for a short time.
I like intelligent solutions.

[WarpedYT]

Similare function to a HUGE blow-off, or bypass valve, I would assume this is more efficient ?.

[drifteradolz]

nice solution of Porsche to end the problem of the the turbo-lag in a very simple and reliable way, good video and cheers from Venezuela

[desert-rat]

Jason, this sounds like a pretty simple solution which doesn't require any new components, do you think other manufacturers would be able to implement this in existing cars by just updating the software controlling the throttle?

[bradymcbride]

I love your videos. You are so articulate that I can watch them at 2x speed and still understand everything clearly.

[Giggiyygoo]

I bought a 718 cayman a year ago, and I'm blown away by how that tiny motor can generate boost so quick. Sure, there's a little bit of lag at low RPMs, but after 3k or so it's instant. Night and day from cars in the 90s

[upgradeNEVER]

So there is an advantage to Drive By Wire Throttle... lol

[RiggyRonnie]

Wow the way you explain this is top notch! So simple an 8th grader could understand.

[twanvorstenbosch]

porsche engineers are amazing, and so are your vids, always explaining things perfect, even my mom would understand haha

[ostfahrstreifen]

You once did a video on the type R's advanced suspension. Can you make another one comparing Ford's revoknuckles to GMs hiperstrut and Renault's thing. Because i understand that they all are some advanced steering-detached McPhersons, but what are the differences?

[superchargedsteve]

Another very simple diagram and explanation to understand this technology! Porsche has always been on the forefront of technology as well as Audi. The VW group has a lot going for it with Lamborghini and Bugatti also.