VEMS Community Forum
VEMS => Calibration & Mapping => Topic started by: Sukhoi on December 30, 2012, 11:36:38 am
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Hi All,
Am trying to activate the open throttle ALS, but not much of luck, I have did the following:
FuelCut RPM = 2500
Fuel Resume RPM = 1400
That what the Help says to activate it ( 1100 RPM difference) But I had no luck with it, as I set many values for the IAC TPS threshold and Idle TPS threshold (in ALS Menu) but also no luck, it keeps giving me warning notes next to (FuelCut RPM &Fuel Resume RPM) in the Revlimit/Overrun/Safty Menu! as a start I made the throttle to open 10%TPS so I can go for higher if it worked, but still not working and the warnings still there.
Anyone have Idea about how to run it? as I want to run it on fuel cutting idle not the spark cutting idle
Firmware:1.1.96
Vtune: 1.3.1 (2012-7-30)
Thanks in advance guys :)
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Warnings? You can ignore them. It is for those who chose 1100rpm difference accidentally.
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Great then am ok then.
One more thing, should I raise the IAC TPS threshold (in Idle settings) to what it reads when the throttle is open? or should I just work with the idle TPS threshold (in ALS menu)?
I have no Idle valve working on this car, while the car idles smothly on 900RPM, and need to prees the throttle a little when it's cold.
Thanks,
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Both are idle thresholds. One works as usual, another when ALS switch is ON. If throttle is fixed you should set both to equal value. Only case when both are different is two different throttle stops - some mechanics open the throttle when ALS switch is ON.
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(http://s1.postimage.org/d31da1bun/Screenshot_from_2012_12_30_20_04_50.png)
does anyone has experience with this one??
trying to setup ir for rally audi, but it looks little bit complicated for me
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Here is a mild ALS setup that I have it activated in Boosted 4AG, that used for track only, this setup is kind of mild, you can have it configured to be wilder.
Am using Switch to activate the ALS along with throttle kicker in this setup, I think the kicker hold the TPS somewhere in the range of 18-22% , can't remember exactly.
(http://i110.photobucket.com/albums/n104/dukhqan/MildALSSettings_zpsb53469ba.png)
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does it works without kicker? what are you using for kicker?? any egr valve or something?
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Hi All,
Am trying to activate the open throttle ALS, but not much of luck, I have did the following:
FuelCut RPM = 2500
Fuel Resume RPM = 1400
That what the Help says to activate it ( 1100 RPM difference) But I had no luck with it, as I set many values for the IAC TPS threshold and Idle TPS threshold (in ALS Menu) but also no luck, it keeps giving me warning notes next to (FuelCut RPM &Fuel Resume RPM) in the Revlimit/Overrun/Safty Menu! as a start I made the throttle to open 10%TPS so I can go for higher if it worked, but still not working and the warnings still there.
Anyone have Idea about how to run it? as I want to run it on fuel cutting idle not the spark cutting idle
Firmware:1.1.96
Vtune: 1.3.1 (2012-7-30)
Thanks in advance guys :)
you want to have idle with opened throttle? use spark cut based idle
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does it works without kicker? what are you using for kicker?? any egr valve or something?
I used this EVO Anti-Lag kicker, it would open the throttle up to 50% on the engine I installed on
(http://i110.photobucket.com/albums/n104/dukhqan/throttle-kicker-large_zps27dadfbd.jpg)
You can use anything that can open the throttle or by-pass air to raise the RPM, just make sure that you have to raise the RPM high enough, you can use some kind of idle valve, but I don't think 1 will be enough
Or simply you can do as am going to do now, use the open-throttle anti-lag, it's mostly used on rally cars, by leaving the throttle open all times while the ECU control the idle and anti-lag.
"use spark cut based idle" can be very bad idea, fuel cut idle would be far more better, you can always look into the 'F1' help, it says that.
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with idle valve inverted i'm getting 4000rpm on idle, I think thats enough? :)
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with idle valve inverted i'm getting 4000rpm on idle, I think thats enough? :)
That seems to be fine, but you have to try it, cuz when I used to set 12% TPS it was not that hard ALS effect and that was on 3500RPM, but it might work with you, so try it.
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I think I'll try to open throttle manually first, thanks for the info ;)
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Am going to do this on 2 cars now thats only for drifting, but I will able to switch between open throttle ALS driving and normal driving without any type of ALS on the fly.
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Here the 2 cars on open throttle ALS with fuel cut idle, it really cools the engine and EGT.
Nissan SR20DET
http://www.youtube.com/watch?v=Vsr9Vhl0bUg
BMW M50Turbo
http://www.youtube.com/watch?v=FTpv62dGpTw
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audi s2
first sucesfull tests using only idle valve.
http://www.youtube.com/watch?feature=player_embedded&v=XfOwl-WC3vY
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Thats great, nice to see that you have done it, you can now play with the settings to see how much wild you can make it, just remember to set the proper de-activation time (I think 3 sec is more than enough) and I highly recommend the de-activation EGT if you have EGT sensor, plus beware that the brakes don't work as you know while you are on ALS.
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It would be nice to see log files of pressure build.
Main three things: driveability/control , pressure build time, turbine life. It is not the easy task to balance between them...
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Thats great, nice to see that you have done it, you can now play with the settings to see how much wild you can make it, just remember to set the proper de-activation time (I think 3 sec is more than enough) and I highly recommend the de-activation EGT if you have EGT sensor, plus beware that the brakes don't work as you know while you are on ALS.
yes I know that, egt installed, brakes vacuum brake booster uninstaled
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It would be nice to see log files of pressure build.
Main three things: driveability/control , pressure build time, turbine life. It is not the easy task to balance between them...
yes, you are right, it's really hard. made a small comparison yesterday, without als when you are pushing gas pedal fast up to 4000 rpm you have 0 boost. with als you have 0.5 bar when pushing pedal same speed and distance.
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I noticed on the Toyota 4AGE, if you was on full boost (0.7Bar) and let off the throttle while ALS working it will go to Zero vacuum (between vacuum and boost), but when you open the throttle again on it will get back to full boost within just few milliseconds, I had few logs for that in the past, but not sure if I can find them.
I had success in building boost while ALS is working (0.2Bar), but that was so brutal on the engine (1.6L) and made so much heat, it's not good idea to have red glowing exhaust-manifold/turbine while on track, so we had to lower it.
On the posted before cars, I didn't log the ALS, so I don't have any idea about it, but it wasn't building boost as well, I will try more later with these cars, as they will be used for drifting and the owners should do the proper trainings, so am thinking in raising the ALS effect step by step, until the get used to it.
For the driving, you will not have the difficult driving if you used a switch, but you have to know how to get back the car on the rod when you are shifting specially on corners, it would take you 30 min to get used to it, but with open throttle ALS, the driving will be harder especially when you are in the area that’s around the idle, as you an tune it to get smoother, so I found a way to select between open throttle ALS and normal driving mode, and the owners likes it.
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And for the turbine life, I noticed that it will shorten it's life for sure, I have seen shafts playing after 4 or 5 track events!!
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audi s2
first sucesfull tests using only idle valve.
http://www.youtube.com/watch?feature=player_embedded&v=XfOwl-WC3vY
Could you please post your settings? I am trying to set this up on my Audi 200 20v using the idle valve as well.
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When I rev up and ALS kick in, I get lean lambda reading.. why so? I tried to richen it up, wont work!
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When I rev up and ALS kick in, I get lean lambda reading.. why so? I tried to richen it up, wont work!
it has to be like that, ignore lambda reading
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It is probably because sensor cannot read unburnt fuel..
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It is probably because sensor cannot read unburnt fuel..
sensor is measuring oxygen in the exhaust :) not the fuel