ANTILAG

[drewby]

Hi any idea,s on where to get a low cost antilag unit for the 33 gtr. cheers. D

[Jim27]

Not an answer, really, but thought I'd link this thread to the current ongoing one on PFC Pro's antilag/launch control function: Apexi Power FC ECU

Most antilag solutions I've heard of are built into an ECU upgrade, so they don't exactly fit the bill as "cheap".

I've often wondered whether or not it'd be feasible for a turbo manufacturer to make a turbocharger with a small motor fitted to drive the central spindle, that way enabling the driver to electrically spool up the turbo before putting his foot down. Just a thought anyway...

Have heard some good things about nitrous being used as an antilag solution... obviously with a manifold pressure switch cutting the supply once adequate positive boost is achieved.

[SteveN]

No such thing as a low cost ALS setup im afraid unless you mean nitrous.

Some (stupid ) people call launch control (ie the temporary lower ign cut rev limiter you can bounce of to create lots of pops and bangs before launching) anti-lag, but it isnt really, no more than nitrous or a supercharger is, and totally useless for when ALS is really really fun, on twisty A and B roads.

You need an ECU that can run antilag (i think AEM can, if not then its time for Autronic etc etc) and then, providing you want REAL anti-lag and not just the sound effects placebo like most peoples road car ALS, some form of throttle bypass valve or throttle kicker as using the ISCV piping is woefully inadequate for anything of any real effect.

There are a few posts where this has been gone into in detail (mainly by me), do a search for ALS, should bring it all up, though TBH ive said it all already in this post.

[NISFAN]

If you know you want all these features up front, you soon see that an aftermarket race engine ECU makes miles more sense than one of the usual Jap tuning scene suspects.

In the end it offers massive value for money when you consider all the features on offer. My cheap lil'ol DTAFast P8Pro has all these functions built in, and unlike Motec all features are unlocked too, so you can have a play without doshing out on upgrades.

On a TB fitted car, like Steve says, the standard idle valve circuit is probably not big enough to run high level AL, but I think you could add another AAC valve and pipework easily enough.

You don't mind frying your Turbo's then Drew?

[drewby]

hay up dood it wont be on for long a few corners at a sprint dont need it for road, put me egt joby in other day at last, good stuff you got yours yet the zt2. D

[NISFAN]

Hi Matey,

Yes, got zt2 in having a bit of grief with it tho. I have probably got some earth loop problems, as readings don't seem right. I've been trying to calibrate it with my P8pro AFR readings. At mo the're not matching up. Need to spend some more time setting it all up me thinks.

[drewby]

ye the wires are a bit of a puzzel i mailed em for imfo give em a mail mine all ok, yu got any 256 cams or 600 inj doin nawt. D

[NISFAN]

Originally Posted by drewby

ye the wires are a bit of a puzzel i mailed em for imfo give em a mail mine all ok, yu got any 256 cams or 600 inj doin nawt. D

The unit seems to work OK on it's own, but leaning out Nissan ECU v. heavily at idle. You connected yours to your ECU? What ECU you using?

Sorry don't have any spare injectors or cams. I'm actually going to be using mine soon, about flippin time too.

[drewby]

dood no not got it in we the ecu may try it. got the pfc. we the dater logger. D

[R34Nismo]

Antilag is fine if you have a rally car and consider inexpensive to be , you dont need to rebuild turbo's often.

You run antilag meaning your running boost even off rev, as this happens it doesnt help the turbo so your reducing your life of the device.

After time it will not seem to cheap to run when you have to change turbo / replace it.

[Jim27]

Originally Posted by SteveN

Some (stupid ) people call launch control (ie the temporary lower ign cut rev limiter you can bounce of to create lots of pops and bangs before launching) anti-lag,

Hey hey hey baldie - don't shoot the messenger! I'm just repeating (in the other thread re PFC Pro) what a certain NW major tuner said. They called launch control 'antilag' because that's exactly what it does - remove the lag on launch. However the term antilag as used in WRC etc realistically means keepin the turbo spinning ALL the time - launch, lift-off, gearchange etc... Launch Control IS antilag, but only for standing launches...

[SteveN]

Jim- Sorry, didnt mean you as such, i read your post and found it very good actually!

R34Nismo- In my experience on road cars, providing you using a decent turbo (not nececerily one specced for ALS, just a well built one) the durability is good, far far better than rumour has it, even with very violent ALS.

A decent quality turbo generally lasts a decently long time as long as you dont spend too long with the EGT above 1000deg C, and that does take a suprisingly long time, and most ALS systems can automaticly de-activate themselfs after either a certain amount of time or once it hits a certain EGT, so you dont even have to keep an eye on the gauge.

[R34Nismo]

Steve your right im just suggesting a lot of people dont go down the route of decent equipment with these install's

[tweenierob]

Steve, how high do you believe the EGT's are with mild antilag?

Rob

[NISFAN]

Originally Posted by tweenierob

Steve, how high do you believe the EGT's are with mild antilag?

Rob

Same as 'how longs a piece of string?'. EGT is a product of many factors even before considering AL. And considering AL is the same as having full 2000degC combustion taking place in the manifold, won't be long before EGT IS a problem. Keep the AL to short bursts, and EGT's should be OK.

However, the problem with Turbo damage, is not just high EGT, rather a rapid heating/cooling of the turbine/ex valves. Something AL does. The manifold itself is liable to fail way before the Turbine anyway. Whichever way you slice it, AL costs you big.

ANTI LAG, such a nice term, we all want some of that.