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Old 11-01-2009, 12:18 PM   #26
mick_the_ginge
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Quote:
Originally Posted by ocean View Post
I'm familiar with how bad anti-lag is on the turbo lifespan, but how is it bad for the valvetrain? Huge backpressure on the closed exhaust valves when the unburnt fuel explodes in the headers / turbo housing? I'm just curious because I've never seen the valvetrain mentioned with respect to an anti-lag system.
In respect to valve train you have part of it. On teh older Subrau heads antilag used to split the vlave shims. Shimless buckets removes that risk but the buckets are taking the beating.

The issue is made worse that the exhaust valves are still open as the combustion moves through.
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Old 11-01-2009, 12:21 PM   #27
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damn Mick! That's serious.
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Old 11-01-2009, 12:46 PM   #28
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I hear the same about the flat foot shift function as well that a few EMS systems use to keep the turbo going during shifting...Something about it being hard on valvetrain components also?
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Old 11-01-2009, 12:50 PM   #29
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Very nice. What sort of controls do you have on the Autronic? I notice a periodicity to the loud bangs, can you set the frequency? Looks like 3 quarters of a second on off throttle and 10hz or something at part throttle.

Has anyone ever devised a system that actuates the throttle cable instead of external solenoids? Or used the cruise control cable? Or do you need finer or faster control?
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Old 11-01-2009, 01:14 PM   #30
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one mad subie!!

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Old 11-01-2009, 10:05 PM   #31
mick_the_ginge
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Originally Posted by Freon View Post
Very nice. What sort of controls do you have on the Autronic? I notice a periodicity to the loud bangs, can you set the frequency? Looks like 3 quarters of a second on off throttle and 10hz or something at part throttle.
You have full control of antilag timing, fueling and the rotational cut that is used. I use more rotational cut at lower rpm and throttle openings to send more raw fuel into the exhaust. At larger openings and rpms I use no more that 25% cut which is why the bandg/pops are very consistant. For the video I did use a little more cut to generate the better effects

Quote:
Has anyone ever devised a system that actuates the throttle cable instead of external solenoids? Or used the cruise control cable? Or do you need finer or faster control?
I thought about doing this, use the cruise control, but the antilag uses tps to work out what to do. The problem with our cars is that if you open the throttle the TPS sensor knows about it and would screw up the antilag. You would need to put a throttle sensor onto the actual pedal and use that for antilag.

If you could work out how to do a throttle kicker you would have amazing antilag.
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Old 11-01-2009, 10:56 PM   #32
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Quote:
Originally Posted by mick_the_ginge View Post
In respect to valve train you have part of it. On teh older Subrau heads antilag used to split the vlave shims. Shimless buckets removes that risk but the buckets are taking the beating.

The issue is made worse that the exhaust valves are still open as the combustion moves through.
Ah, I see, so the pressure slams the valves into the cam lobes and generally puts stress where it shouldn't be. Interesting - hadn't thought about that being an issue before but it certainly makes sense. Thanks for the answer - and I still want this on my car, haha

Oh also, had one more question. Does the Autronic system let you toggle the anti-lag system on or off fairly easily? Because I could see it working okay on a daily driver as long as most of the time it was off, and it was only flipped on when doing more spirited driving (and would consequently cause a lot less damage to the engine and turbo).
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Old 11-01-2009, 10:59 PM   #33
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I haven't heard that noise in years...I can still picture cars booming their way through the woods at 85mph...
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Old 11-02-2009, 12:07 AM   #34
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I have the Antilag enable setup based on an external switch making it easy to turn on and off. It's actually connected to the rear defog switch because that was easy to do. Rear defog is on a time circuit so one day I am going to hook it to the AC switch which I don't use either.
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Old 11-02-2009, 02:51 AM   #35
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Very cool!!
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Old 11-03-2009, 12:16 AM   #36
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after viewing your video i now am completely disappointed with life and wantz antilag...
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Old 11-03-2009, 12:32 PM   #37
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True Subaru Wizard status
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Old 11-03-2009, 01:53 PM   #38
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holy crap, that vid made my day!
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Old 11-03-2009, 03:23 PM   #39
mick_the_ginge
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LOL, thanks everyone. I have been pretty pleased how the Antilag setup turned out.

I've 1/2 installed the electric vac pump now so I'm closer to resolving the no vac for the brake booster problem when Antilag is enabled. I test hooked up the pump and was amazed at how much better the brakes felt. I'm hoping this will be enough to allow me to use Antilag on the track.
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Old 07-16-2012, 11:39 AM   #40
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any updates? ..i know its a dead subject...but what happened since 09 when this was posted?
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Old 07-03-2013, 09:15 PM   #41
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Quote:
Originally Posted by mick_the_ginge View Post

The Autronic EM controls the Antilag but you still need some way of either opening the throttle or bypassing the throttle when ALS is enabled. I went the bypass route and connected two dash 12 hoses under the throttle.

The other side of the hoses connect to solenoids that are activated by the Autronic. Its not perfect but the IAC on it's own does not generate enough bypass air.
I am building a Ver5 Type-R at the moment, and I have A Link g4 Plug n Play ECU with Anti-Lag, Launch Control and Flat foot features. So are you saying that before the Anti-Lag feature will work, I have to bypass the throttle somehow? I don't understand that part, I thought it was basically a on/off with a switch feature? What am I missing here? And can you explain the vac pump for the brakes too? Do you have to do all of this with the Bee Rev as well?
Thanx for entertaining my noob question.

Last edited by WelDun1; 07-03-2013 at 09:22 PM.
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Old 07-04-2013, 03:28 PM   #42
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^^^^^^

If you have dbw throttle you won't need the bypass setup Mick uses but if you are cable throttle you either use a throttle stop or bypass. Without it the motor won't be able to ingest enough air for the combustion needed to build boost for anti-lag. It explains it fairly well in the Link/Vipec help files.

As for the vacuum pump, when anti-lag is active your manifold is no longer at a vacuum so your power assisted brakes won't work as well since it relies on vacuum for the assist.
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Old 07-07-2013, 07:57 PM   #43
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Could throttle cable cars use the cruse control solenoid to open the throttle for anti lag? Not sure what system controls cruse but if its the ecu then you'd think a stand alone could do this.
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Old 07-08-2013, 02:45 AM   #44
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Cruise control for the cable throttle cars is via a separate cruise control module and all the standalones I know of that do have the option of cruise control only work on DBW cars.
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Old 07-08-2013, 06:31 PM   #45
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I have an 04 WRX with throttle cable and run an Autronic PnP board. Cruise works fine. But I have never seen anything mentioned in any of the tables, makes sense if it has its own module.
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Old 07-08-2013, 08:08 PM   #46
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How do you like the Autronic? I don't know much about them.
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Old 07-08-2013, 09:13 PM   #47
gold rush
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First mod I purchased for my Suby back in 05 and the only thing that hasn't given up or disappointed me. I don't have experience with any other EM but the sm4 does everything and more than I want it to. But most of all its what my tuner prefers.
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Old 07-09-2013, 03:18 AM   #48
WelDun1
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Quote:
Originally Posted by kellygnsd View Post
^^^^^^

If you have dbw throttle you won't need the bypass setup Mick uses but if you are cable throttle you either use a throttle stop or bypass. Without it the motor won't be able to ingest enough air for the combustion needed to build boost for anti-lag. It explains it fairly well in the Link/Vipec help files.

As for the vacuum pump, when anti-lag is active your manifold is no longer at a vacuum so your power assisted brakes won't work as well since it relies on vacuum for the assist.
I don't have drive by wire, I have a ver5 type-r, so yeah... No dbw. Does it explain how to set up a throttle stop/bypass in the help files?

Thanks for the info
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Old 07-09-2013, 03:58 AM   #49
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No it doesn't but if you open the PC Link help file and search anti-lag under the index tab it does explain the solenoid method that Mick uses and the DBW method you could use if you were DBW.

The throttle stop method is just a linear actuator that is used to hold the throttle open a set amount. You can assign a aux output to control that, how you mount it is up to you.
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Old 08-04-2013, 07:22 PM   #50
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Quote:
Originally Posted by kellygnsd View Post
No it doesn't but if you open the PC Link help file and search anti-lag under the index tab it does explain the solenoid method that Mick uses and the DBW method you could use if you were DBW.

The throttle stop method is just a linear actuator that is used to hold the throttle open a set amount. You can assign a aux output to control that, how you mount it is up to you.
Thanx for the info. Does it also explain how to set up the Rotational Idle?

Last edited by WelDun1; 10-01-2013 at 01:17 AM.
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