General non-information about factory ALS
Oct 27, 2012, 01:24 AM
#541
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Hey guys I have JDM Evo VII with factory SAS. I'd love some opinions from you guys on its performance etc and if its worth keeping.
At the moment I've got no mods but will in the future and some mods such as Injen Intake don't have an outlet for the SAS pipe.
I've also read on another thread that its not turned on in the ECU and you have to enable it. Is this true?
At the moment I've got no mods but will in the future and some mods such as Injen Intake don't have an outlet for the SAS pipe.
I've also read on another thread that its not turned on in the ECU and you have to enable it. Is this true?
Oct 27, 2012, 08:46 AM
#543
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Oct 27, 2012, 02:51 PM
#544
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Oct 27, 2012, 05:55 PM
#545
my modified version might work. I have seen zero data from anyone stating that the OEM hardware actually increases shaft speed over no hardware at all. Im out to make a big change to that. I hope. Thats the pleasure of trying something new.
Oct 28, 2012, 12:30 AM
#546
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Sweet can't wait to see the results! keep us updated
Oct 28, 2012, 12:48 AM
#547
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Sorry if this has already been posted but it made the whole system make sense to me so thought id share.
http://en.wikipedia.org/wiki/Antilag_system
In the link above check out the paragragh titled INLET BYPASS
To me this sounds like once you activate it in the ECU, it will have a combination of retarded timing and the SAS valve operating to achieve antilag.
When you enable the SAS there must be code in the ECU thats activated with it to ensure excess fuel is let through to the exhaust mani so when the SAS operates it will reach the right Air/Fuel ratio and go bang on the hot mani.
Am i on the right track?
If this is the case then the factory SAS should in theory work like a charm??
EDIT: Reading on another site that on most EVO's tune is quite rich to start with and there should be enough fuel to make a small bang so all you need is the SAS valve to open and you have achieved "Mild" antilag. Only problem being that most people tune their Evo's and the result is not enough unused fuel for the SAS to be effective.
http://en.wikipedia.org/wiki/Antilag_system
In the link above check out the paragragh titled INLET BYPASS
To me this sounds like once you activate it in the ECU, it will have a combination of retarded timing and the SAS valve operating to achieve antilag.
When you enable the SAS there must be code in the ECU thats activated with it to ensure excess fuel is let through to the exhaust mani so when the SAS operates it will reach the right Air/Fuel ratio and go bang on the hot mani.
Am i on the right track?
If this is the case then the factory SAS should in theory work like a charm??
EDIT: Reading on another site that on most EVO's tune is quite rich to start with and there should be enough fuel to make a small bang so all you need is the SAS valve to open and you have achieved "Mild" antilag. Only problem being that most people tune their Evo's and the result is not enough unused fuel for the SAS to be effective.
Last edited by KStyle; Oct 28, 2012 at 12:55 AM.
Oct 30, 2012, 04:38 PM
#548
The theory is well documented in the first 4 pages of this thread. You really should read what claudiumxg has to say, he seems to have a bit of experience in the area Im searching.
I have all the fittings I need for the cold side of the system now. The final aeroquip fitting came in today
Now its just up to the hydraulic shop to embrace my design.
if youre ambitious you can accomplish anything. if youre patient you can see how I attempt it.
I have all the fittings I need for the cold side of the system now. The final aeroquip fitting came in today
Now its just up to the hydraulic shop to embrace my design.
if youre ambitious you can accomplish anything. if youre patient you can see how I attempt it.
Nov 1, 2012, 06:23 PM
#550
Can someone with experience tell me when the negative timing for normal als actually kicks in?
Is it while the throttle is decreasing?
Is it after the throttle has closed?
I want to create an external map switch that has a light and short spring on it, possibly adjustable some how so that before the throttle is actually closed all the way the transition to alt maps which is a whole lot of negative 20 interpolated horizontally to 250 load ish
Is it while the throttle is decreasing?
Is it after the throttle has closed?
I want to create an external map switch that has a light and short spring on it, possibly adjustable some how so that before the throttle is actually closed all the way the transition to alt maps which is a whole lot of negative 20 interpolated horizontally to 250 load ish
Last edited by 211Ratsbud; Nov 1, 2012 at 06:27 PM.
