sideways.taff
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Not another anti-lag thread lol! Now I find them incredibly interesting sometimes, purely for Stav's posts usually as they make sense but for the most part people just don't understand it at all haha.
Antilag for drifting?
- Thread starter dragos1989
- Start date
superclarkey
DORITECH MOTORSPORT
I've drove 2jz with that much hp and in the power band like that they don't need ALS lol, specially the tyres they normally run on.
2jz are anti lag machines of there own lol
2jz are anti lag machines of there own lol
Stavros
Active Member
Hardly any of the above video is ALS though to be honest.
This is more like it
Regarding what was said above about 600bhp 2Js having no lag etc, well, that's the thing, does it still feel and respond the same as the same power if the engine was a massive capacity N/A V8 or positive displacement supercharger? No, it don't the smallest most responsive turbos on the planet still don't.
Full boost might come very very fast, but it isn't instantly, it isn't already there. Chances are the revs have increased 1000rpm from the point of foot down to full boost, even if full boost is there within a second and it was on some boost the instant you nail the throttle.
That's the difference, full boost being already there makes things drive and feel very very different.
Not saying it's a vital thing for drifting, as that's a retarded thing to say, I'm just talking about how it feels as almost everyone seems to get the wrong idea; it behaves very different to just having an engine with a super fast responding turbo.
This is more like it
Regarding what was said above about 600bhp 2Js having no lag etc, well, that's the thing, does it still feel and respond the same as the same power if the engine was a massive capacity N/A V8 or positive displacement supercharger? No, it don't the smallest most responsive turbos on the planet still don't.
Full boost might come very very fast, but it isn't instantly, it isn't already there. Chances are the revs have increased 1000rpm from the point of foot down to full boost, even if full boost is there within a second and it was on some boost the instant you nail the throttle.
That's the difference, full boost being already there makes things drive and feel very very different.
Not saying it's a vital thing for drifting, as that's a retarded thing to say, I'm just talking about how it feels as almost everyone seems to get the wrong idea; it behaves very different to just having an engine with a super fast responding turbo.
Stavros
Active Member
Nah most of them are N/A mate, even a lot of the ones that look like full on WRC cars are the super duper N/A ones from these days.
Some are turbo on the vid, but the minority for sure, maybe 20% of them?
And some race cars pop and bang like a mofo on the overrun with no ALS at all, GT cars for example. N/A and not, N/A ones in that vid, and the GT-R GT3s do like mad and they've no ALS either.
Some are turbo on the vid, but the minority for sure, maybe 20% of them?
And some race cars pop and bang like a mofo on the overrun with no ALS at all, GT cars for example. N/A and not, N/A ones in that vid, and the GT-R GT3s do like mad and they've no ALS either.
Stavros
Active Member
Either that car hasn't got anti lag or it doesn't work properly. its in vacumn every time he off throttle.
Flat shifts though so no lag mostly, and launch control on start line.
I didn't think from other vids I've seen it didn't sound like it did, and that vid shows it hasn't.
If you look at the onboard footage in the first vid, you can see that he's not flat shifting. Also, IMHO he's using an anti lag but it's just set to build low boost. When off the accelerator it doesn't go vacuum, just stay's at low boost i think (like 0.2b). I think somebody told me in the past that ppl sometimes set delicate antilag so the car doesn't pull too strong when of the accelerator
Cheersthe ds3 rallycross cars that i work on have adjustable anti lag and launch. The engine runs tibuc anti lag. tibuc is an air by pass system, it runs its own control system.
its an itb setup with a 5th butterfly that directs air past the 4 main butterflies and into the inlet tracts. The ecu retards the ignition and sends in fuel. retarded ignition prevents combustion until the mixture reaches the exhaust manifold. the heat ignites the mixture. controlling the amount of air by pass, differs the amount of anti lag produced
its an itb setup with a 5th butterfly that directs air past the 4 main butterflies and into the inlet tracts. The ecu retards the ignition and sends in fuel. retarded ignition prevents combustion until the mixture reaches the exhaust manifold. the heat ignites the mixture. controlling the amount of air by pass, differs the amount of anti lag produced
Stavros
Active Member
If you look at the onboard footage in the first vid, you can see that he's not flat shifting. Also, IMHO he's using an anti lag but it's just set to build low boost. When off the accelerator it doesn't go vacuum, just stay's at low boost i think (like 0.2b). I think somebody told me in the past that ppl sometimes set delicate antilag so the car doesn't pull too strong when of the accelerator
I was looking at the 2nd vid as it's in car, didn't realise the first vid had in-car later on! Doh
2nd vid I'd say no way anti-lag, more like flat shifting instead, can see it in vac and can see the delay on the tight hairpins etc.
BUT, as you say, on the 1st vid on the in-car bit he is using it by the looks of it, good spot
Stavros
Active Member
In to the turbine to keep the turbo spinning, that's how anti-lag works. Be it throttle bypass ALS or EGR (directly into the exhaust) ALS, it uses compressor air to power turbine air to create compressor air, and so on. Exactly how a jet engine works. It just turns the turbo in to a jet turbine, and uses the engine as the fuel and ign source, nothing else.
But yes, at full boost, IF the turbo can reach full boost, which generally it can't, the wastegate would open as normal to limit boost.
The vast majority of ALS systems don't flow enough air to create anywhere near enough turbine energy to spin the compressor enough to create full boost.
Confusing eh lol.