RomRaider

So apparently some JDM STI impreza Ver 8 ECU have Antilag feature build in that is disabled from the factory.

Is this something that can be enabled?
Also what model/ecu number has this feature. I am sure not all of them have that.

Thanks

Greg

Not that I've ever heard of. Do you know the year and trim or any other details?

In Japan you can purchase STI Ecu that has Antilag feature. Part number is 100104S060 and it is a Subaru part. This is a rally part and is tuned for a 32mm restrictor.

...but also I was told that certain version of Impreza STI supports that feature but it needs to be turned on/activated.

Will look for more info on this


http://news.hspn.com/articles/123/1/STi-Announces-Release-of-a-Group-N-Tuned-ECU-for-the-GDB-E-Type-Impreza/Page1.html

You might want to check out the ROM images mentioned in the thread at http://forums.openecu.org/viewtopic.php?t=480.

what's group N?

Not a rally guy huh?

When you look at the top rally racing level you will notice there are 2 major classes. Open known as WRC (World rally cars) and group n.

Group N cars are still over $100K new but are a lot closer to showroom model car. Minimal modifications are allowed

Usually based on a top production model in case of Suaru it would be STI spec C


Greg

Naw, starting watching it on the speed channel a while back but then my cable dumped the channel.

So, you are saying these rally cars use the same ecu as the production car? I would guess if this is true and if the anti-lag code is disabled in the production ecu, it would probably be in the jdm ecus that have the 400 g/s maf capability. Even though these ecus have this capability, they are still scaled the same as other ecus (292 g/s max). So it is essentially disabled in the production car.

I got one of the newer (05) I think JDM Ecu's. Not sure if this one has ALS but will try DL from it.

Greg

6A

22611AH581

11220-5122

Your revision should be A4TE002B
have the same car here, i dont think is possible to do it for now. (On production ecus)
Maybe new models 05+, but i can confirm on 03 revisions A4TE002B
and A4TE002C antilag is not there.

03 groupn is using this type of ecu: http://www.subaru-sti.co.jp/e/GRN/parts_news/sti03029.html looks like a denso to me,
tuned for 100ron fuel and 32mm turbo restrictor to FIA standards, im sure antilag is possible to be there, on that.

This was just awesome, from Chiefy's link...

Please avoid using this part other than competition.

Note: Body vibration and noise will be increased by fitting this product.

Even if some of these ecus have anti-lag logic, isn't it fairly destructive to exhaust valves, headers and the turbo? Not to mention that it couldn't be run with any cats. I don't think it would be useful for the average user and would only benefit a handful of people with the proper setup. And then, if released, you know there would be a number of noobs who would attempt to use it when they shouldn't. Just thinking out loud here.

In one way, yes you're right. But on the other hand, modifications and tuning in general alre also destructive to the car. None of the engine, suspension, or driveline components were intended for any of the stuff we're doing. Launch control hammers the crap out of everything, raising the boost and timing destroys the pistons, why not add another tool of destruction lol. It would be really cool.

Yeah maybe I dont think the same way you do lol

Ima have to go with Mike and Merch on this.. It is destructive, as merch says.. but mike's got good points too..


And so, in the hands of someone new, and not really sure how/why/when to use the ALS, then before you know it, turbos are aving to be replaced, exhaust pipe/mufflers are being blown apart, etc., then they're whining about how this or that is a piece of crap because.. wait for it.... "IT blew up my [fill in whatever part they killed, here]!!"



But for those that know it's uses, know it's misuses, and can actually know which to use , then it's an added bonus!




edit:


Downsides to an ALS:

* A quick rise of the turbocharger's temperature (which jumps from ~800°C to the 1100°C+ region) whenever the system is activated
* A huge stress on the exhaust manifold and pipes (mounted on a street car a bang-bang system would destroy the exhaust system within 50-100 km)
* The turbo produces significant boost even at engine idle speeds
* The explosions which occur in the exhaust tubes generate important flames which can, sometimes, be seen at the end of the exhaust tube
* Reduced engine brake

It's already easy for a noob to trash his engine or turbo using what's available today. If it turns out to be easy to implement antilag, then I say do it. It could make rallying just a little more affordable.