Kane

Anyone have ay information or have anti fitted to your car? Does it kill the lag flagspots? hows much etc,etc

nom

Erm, possibly a bit drastic... not to metion a tad illegal on the road
What's the problem?

Kane

Just a question related to the flat spots you get when changing gear quickly due to the spool down of the turbo??? Is it illegal??

Kane

DOnt know much about the kits thats why i am asking..:-)

nom

Yup, illegal on public roads.
You might be able to get an improvement with a quality DV - this is argued back & forth a lot - I found an obvious improvement with an HKS DV, and even more so with a Forge, but it (the Forge) id set to 'destroy turbo' release pressure (or would if it were an IHI one...) - it doesn't exactly dump very often. This 'no dumping' (whiether it's possible/sensible or not is very dependant on the turbo) may or may not be to your taste, though.

Kane

np on the anti lag m8 cheers

Also posted the DV question as i see people saying there is a difference then others say there isn't..so hopefully that question will also get answered cheers for the info

M0NEY

But so much fun

rapac

here u go
http://forums.nasioc.com/forums/showthread.php?s=&threadid=377537&highlight=antila g


Cheers
from OZ

TopBanana

Is anti-lag actually illegal on the public roads? I thought it was still a grey area

nom

I don't think it's speifically noted in the regs "Thou shalt not use anti-lag", but the obvious noise/pollution problem is there & how well do you think it would stand up in court? Traffic cop sees flame flying out of the car, I think he's probably have good reason to pull it over & cause a few problems to the owner.

Daz34

Some of the more extreme Ralliart evos come with anti-lag so surely it must be legal. Doesn't it drastically reduce the life of your turbo anyway

MorayMackenzie

Nom,

I don't know why it would be illegal, except for the possible noise emmisions issue.

Compressor bypass valve systems are traditionally accused of being there to reduce turbo lag... therefore they are a form of anti-lag... but most OE turbo cars are fitted with quiet compressor bypass valve systems (dump valves).

I guess that pretty much any vent to atmo dump valve will be illegal taking the noise argument... however i've never heard anyone suggest that BOVs are illegal.

Moray

nom

I'll have to find the reference to the law bit - I know I saw it somewhere. No idea where, though
I suppose the main reason that A-L isn't 'common' is the fairly brief life it gives to the average turbo. And I'd have thought its road manners wouldn't be much fun?

Andy.F

You may also consider the effect on the brakes of having little or no servo vacuum

Andy

M0NEY

I heard the same as nom, its illegal.

Whenever they put it in Jap mags, they say its meant to be use only for track days and not on public roads

TopBanana

So how does the brake servo vacuum thing work then?

RB5_245

It uses vacuum from the inlet manifold to 'help' the brake master cylinder (press the brake peddle then start the engine while holding it down, you can feel it).

With anti-lag you keep the boost pressure when you come off the throttle, so no vacuum in the inlet manifold to help your your wee right (or left ) foot along.

TopBanana

Ahh-ha! That's not *too* much of a drama though is it? I guess you could fit a meatier master cylinder and disconnect it from the vacuum system altogether?

David_Wallis

or you could use a vacumn pump..

David