using antilag feature

[LTUDSM]

what should i get,if i want to use anti-lag feature? i read a lilbit bout that,and it says that GSM link has that feature.is there anything else that i can use for an antilag? or dsmlink is the way to go??? i know that DSMLink is good not even for an antilag but its way to expensive,right now im thinking to get a 2nd stage Keydriver chip wit ha 2step launch.Plus antilag it would be awesome.I know that its not good for a turbo,but i would use for a short time

 

[1gDSM4g63]

Is this a question or comment about the supposed ' antilag?'

No chips or tuning programs with get rid of turbo lag. And as for the 2 step launch, it will damage the drivetrain and axles.

 

[Eclipsegst2312]

I will be setting up my Antilag with my dsmlink this weekend and will let you know how it is. Ive heard that a keydriver chip and SAFC combo can work well on certain applications. You could also go with the MSD ignition. If you have a 1g you could use the 6al.. if you have a 2g you must use the DIS-2 because of the coils. The MSD will give you a faster studder compared to the dsmlink and keydriver because they both cut fuel compared to the MSD systems that cut ignition.

 

[JayRolla]

what should i get,if i want to use anti-lag feature? i read a lilbit bout that,and it says that GSM link has that feature.is there anything else that i can use for an antilag? or dsmlink is the way to go??? i know that DSMLink is good not even for an antilag but its way to expensive,right now im thinking to get a 2nd stage Keydriver chip wit ha 2step launch.Plus antilag it would be awesome.I know that its not good for a turbo,but i would use for a short time

Wow man use a little punctuation next time, that hurt my brain to read. What turbo are you running that you need to run antilag feature? Its very horrible for the turbo.

 

[SOADweskey]

I use the DSMlink 2 stage launch all the time but I very rarely use the anti-lag. Dropping my clutch at 5250 rpms gets me 1.7 60 foots and I'm really not a good driver. But I'm scared to drop it that high with 18lbs of boost built.

 

[dsm-onster]

No chips or tuning programs with get rid of turbo lag.

Releasing still burning fuel into the exhaust manifold certainly will decrease spool time. This has been achieved via tuning and chips.

 

[Supa Dexta]

search youtube for some antilag video's, it'll show you what it does..

 

[architechnik]

Each of these options do cause additional wear on your engine and should only be implemented on heafty builds. If cost for dsmlink is a concern, then you should not use any anti-lag features and should not need any - unless a massive turbo fell into your lap.

In my opinion, the 14b lag is minimal and using an anti-lag would not benefit much on a stored chip (non-emulation/dsmlink) compared to the additional strain. If you are looking for a cost effective solution, then try an emulator like the one from Moates.net. You will still need a laptop to monitor everything, but the emulator and modifications to the ECU can be done real-time and reset to stock when not going all out.

 

[Defiant]

what should i get,if i want to use anti-lag feature?

Spare turbochargers. Many of them.

 

[LTUDSM]

correct me if im wrong,but when you making your timing retard,thats how the lag comes from right???

 

[GVR4592]

No, the lag comes from the turbo not spinning fast enough to create boost.

 

[ILLiCliPSE]

you can use it but keep it on the track....its terrible for the turbo, and ive even heard people lifting the head from the block if you hold it too long. not sure how accurate that is, but its something that i wouldnt wanna test. ive used it on a couple launches it all depends on what turbo you have and what kind of power youre putting to the ground.

 

[architechnik]

Anti-lag actually retards the timing so far that the combustion is still occurring when the exhaust valves open, causing increased expansion inside the exhaust manifold. The "feature" is set so that it will happen when the clutch is pressed.

This puts a lot of force on the turbine wheels, with fuel still catching fire as it exits the engine. This is what causes a lot of the flames coming from the exhaust and the loud banging during shifts.

Sure, this keeps the turbo spinning when the engine normally wouldn't be passing as much air, but damn does it do a number on your entire exhaust system (turbo included).

 

[turboglenn]

I have no doubt that it causes damage, but how much and how fast? I ran anti lag on my stock 7 bolt for over a year and the motor was fine ( as far as i could tell from normal tests like leakdown and compression). and I am still using the same turbo to this day, and besides teh compressor wheel having a few slight nicks in it, it looks perfectly fine. That motor later blew the HG because of too lean AFR's and too much boost. and besides the scoring on the thrust/pressure face of the piston no the walls i couldn't see anything warranting further investigation.

I only used the anti-lag here and there though, someitmes i'd just play with it on the interstate. I tried it for drag racing a few times but it was about uselss on a FWD unless i only built about 5-8 psi or so`. And I used it a few times to show customers and friends that it is possible to build all the boost you want in neutral with the right setup. On a FWD anti-lag about useless except in SCCA track days or solo II racing. But it's still a pretty cool feature IMO. DO you know of any links to pages where some one has suffered defeat from anti lag and documented it with pics or vids? I would like to see it, not because of doubt, but just to see what really happens vs. what theory tells you will happen.

 

[LTUDSM]

i want to use that on a track,and to see how it would improve my 1/4 time,would it be possible to retard the timing during dynotune??? or antilag doesnt have to do anything with dyno?

 

[turboglenn]

Anti lag has nothing to do with the dyno, it's for when you need power steadily and fast in a racing application. On the dyno you lay into your car and just let it spool and rev from the very lowest RPM to redline and the computer calculates your power from there ( it's more complicated than that, but that's the basic idea of whats going on at teh dyno)

Unless you're AWD or rear wheel drive the AL will just make you spin more on the track, i tried it a bunch and i get batter launches with a 2 step or just by my feet alone. Im really interested in how fast it destroys parts. I can't afford to test it but hopefully there's a link floating around of some one who put it to the limit and took pics for us

 

[architechnik]

The primary concern is that it causes excessive pressure in the exhaust system. Tubular manifolds will show the excess stress fairly quickly as well as the turbine housing.

turboglen, it sounds like you were using an active system, like dsmlink, aftermarket ecu, or an emulator, where the AL can be activated or suppressed. The original poster was referring to using a set chip that would be continuous, street or strip.

Just as you mentioned, the negative effects don't really show on vehicles not normally boosted, aka 5-8 psi, where the exhaust temps and pressures don't hit the levels we see every day.

In other words, if you have a 4g63/4 with a standard Mits style turbo, the system is more likely to do harm than help.

There is an alternative version of the anti-lag used by some newer evo rally racers that circulates the bov into the exhaust. Each shift when the wastegate opens, the pressure behind the turbo is maintained by some of the compressed air being routed through. This requires a different intake system and actually uses double bov's.

 

[turboglenn]

Yea, I was using a system that intergrated into my haltech ECU. It basically retards the timing and adds fuel when you either meet parameters you set or you hit the switch. I couldn't imagine it having the AL on all the time 8)

That last system that uses the BOV sounds a bit interesting though. Sounds like things would hold up longer that way, but you probably wouldn't get the effect that you do when using a "traditional anti-lag" setup

Hell, I'm still anxious to get my water/meth injection kit ordered this week 24psi on pump gas will be great if i can hook up

 

[lasthope05]

AntiLag is much less damaging if you have a BB turbo as opposed to the standard journal. 2-Step or Antilag will not damage the drivetrain all all. Im not sure where your getting your information from. If you dont know how to drive or launch correctly then you shouldnt be using these features. Preloading the drivetrain takes away alot of the stress from straight dumping or slipping. Granted you should be preloading the drivetrain with ebrake/staging brake in place and slipping the clutch out on the launch.

Turboglenn is true in saying anti-lag is useless in a fwd. You will have too much wheel spin. For a fwd I would just do 2-step and have a mult stage boost contoller for launching.

 

[architechnik]

There was a post just a little while ago about an anti-lag system for turbo diesels that actually injected propane directly into the exhaust manifold. I have not seen this done personally and it seems pretty wild, but that was the one where I saw pictures of the bov routed to the exhaust mani on the rally evo setup.

Check this thread for more info
http://www.dsmtuners.com/forums/tur...e-propane-injected-directly-exh-manifold.html

Check out the pic a the very bottom of the thread for the good stuff.