Anti-lag system

[gtmracing]

Is there one available for the road version of the car, or is it a specialised piece of kit that is rarer than a hens tooth?

Gary

[ScoobyDuck]

yes...

but you need (as a rule) to change the ECU.

GEMs,
Autronics
Motec
and more, have the facility.

few downsides

a) kills your turbo
b) extremely high EGT's = kills your turbo
c) kills your turbo
d) illegal

on the up side , pops and bangs galor! :D

[gtmracing]

so to summarise a, b, c, not good, d, who would know :norty:

Thanks for the info :thumb:

[Dyney]

Errrrr...... I think everyone would know!!! IT'S QUITE LOUD YOU KNOW!!!!

[scoobybroke]

but how many cops know what anit lag is lol and on top on that you could have it switchable :)

matt

[Goobie]

Errrrr...... I think everyone would know!!! IT'S QUITE LOUD YOU KNOW!!!!

:nod: they sure are! :norty:

[gtmracing]

found this article (http://www.rallycars.com/Cars/bangbang.html) which explained how it all works, now i just need to find somewhere that sells it :norty:

[Dyney]

As Steve said it's usually part of the ECU.

I expect there are stand alone kits about, but I'm not sure how the std ECU would cope with it :o

[Dyney]

Also bare in mind that the brake servo works off inlet vacuum.
With Anti lag you will have no vacuum so you no brake assistance!!!!!

[timmay]

there is a anti lag ecu on ebay for £750

[Dyney]

If you mean this one: http://cgi.ebay.co.uk/Subaru-impreza-V5-6-group-N-Possum-Link-ECU_W0QQitemZ4616357447QQcategoryZ10424QQssPageNam eZWD9VQQrdZ1QQcmdZViewItem
It's the wrong year :(

Great ECU though ;)

[gtmracing]

what sort of ECU would i need then?, so many available it's starting to hurt now :2ponder:

[Dyney]

I think The Apexi PFC can do Antli lag but you loose one of the other functions. I'm sure ScoobyDuck will be along soon to put me right :)

PFC - £700 mapped
Or
GEMS, MOTEC etc at well over £1000

[gtmracing]

I think The Apexi PFC can do Antli lag but you loose one of the other functions. I'm sure ScoobyDuck will be along soon to put me right :)

PFC - £700 mapped
Or
GEMS, MOTEC etc at well over £1000

*gulp* :2ponder:

[ScoobyDuck]

nope, you're thinking of the LINK Iain. no logging if you have that and it means a chip change.

Motec = 2500 by the time you've bought all the addons (new that is)
Gems is a pig unless you like an idle of 1100rpm coz i just isnt made for a road car. mind you, Motec is the same TBH

i would go with an Autronics unit. plugin , accepts WideBand, antilag, options for water spray outputs & shift light (i think).

Speak to Zen Performance (Pavlo)

[Dyney]

ahhh yes :) See I said you'd put me right.

Autronic :idea:
Still looking at over £1000 though :(

Pectel would be nice but then your talking 5x the cost of some of the others :o

[Markus]

As we're on the subject of anti-lag. I was reading about the Prodrive P2 concept/prototype car that's based on the impreza platform. It said that it would come with anti-lag, a first for a road based car. Now, I know prodrive know what they are doing, but we know that anti-lag kills turbos and such like, so why would you have it as part of a production car? are they doing something different in their propsed anti-lag system?

I have a recollection it was said to inject more air to keep the turbo spinning, whereas normal AL injects fuel, if I recall correctly. Maybe that's how it doesn't destory things, but where are you going to inject the air from, plus, would it work?

[Dyney]

Anti lag doesn't have to be BANG BANG!! it can be more subtle that that :)
On the most severe mapping it can destroy a turbo in short order. I expect if it was mapped to be less severe the turbo would last longer and the noiise would be more subdued :)

If they are using air instead of fuel :confused:
You could use an air injector but I think it would need to be a big one!!! :D

[gtmracing]

that article that i posted said that you can tune it to give you .3bar to the full monty of 1.5bar while the butterfly is shut. Not that i want the full monty as i can see the clutch going after a few months of having it on :haha:

think i may have to give this a miss as those prices are way to steep for my pockets *gulps again*, and will also make a dent in the other halfs TVR fund.

[Markus]

Iain,
Here's what the article says (if I had a scanner I'd scan it in)

..."To reduce the amount of Tubor Lag, the egine gets a system that injects air into the exhaust manifold to consume unburned fuel, which then spins the turbocharger"...

As said, I thought normal AL stuck more fuel in there to cause the existing unburnt fuel to ignite, but I'm probably totally wrong.

I bring this up mainly as if Prodrive is considering this on a production car, then I'm surprised that one of the bunch of mad tuners out there ;) have not thought of or utilized a less detrimental version of AL to increase performance. Then again, don't we all wish we had Prodrive's budget to use on our own R&D.

[ScoobyDuck]

some variants of AL pump extra fuel / air into the exhaust to make things go bang better.
the autronic ecu is about 750/800 i think

[Dyney]

Speak to Paul (Pavlo) at Zen performance ;)

[Markus]

Is there an echo in here? :D

the little devil on my shoulder is telling me to turbo/supercharge the honda :D