2 stage no2 for ems2 | AEM
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marv80
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2 stage no2 for ems2

Well im sure ill get a response that series 2 is as far as its going to go because of infinity ECU but this would be a nice feature too have.

AEM_NS
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You're correct.  The Series 2

You're correct.  The Series 2 is basically a matured product now but we'll keep your suggestion for 2 stage nitrous control in mind should there be additional enhancements in the future.

marv80
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Well that's nice to know. I'm

Well that's nice to know. I'm more than ready to try this out if it ever comes to light  just not fun tuning with fuel jets anymore.  

AEM_GN
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Depending on what you are

Depending on what you are trying to do you may be able to use the User Fuel Trim Table as 1 stage and the nitrous maps as your second.

marv80
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Well it's a daily driver so

Well it's a race car so looking for the most out of it all motor.  It's a 70 shoot first stage and 100 shoot for second stage. If I use fuel trim for first stage my timing will have to be retarded form the start right ?  For now I have it set up like this, Switch 1 to activate first stage using nitrous map from there I have a second switch that is grounded out only when fisrt stage is on to activate second stage using LS output function to activate under certain conditions the problem with this is I have no control for timing unless I have it setup on the nitrous map but if I only use the first stage I'm lossing power. 

AEM_NS
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The nitrous timing and

The nitrous timing and fueling is mapped so you can do whatever you want.  It's not like you can only apply a fixed timing/fuel trim.  If you tied your second stage to be based off rpm, you could then maybe setup your timing/fuel trim to adjust at that same rpm.

marv80
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Yes my second stage is set by

Yes my second stage is set by rpm and mph. So i can set trims on timing too i did not know this. My question to you now would be can i set fuel and timing trims to be active by switch that way im not running the trims if i only use my first stage?

AEM_NS
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The nitrous trim maps are

The nitrous trim maps are tied to nitrous control activation.  If nitrous is on in the software then the nitrous trim tables are active.  

I still don't think you're really getting what I mean when I say that the nitrous trims are mapped and not a fixed trim.  In the example below, at 3500rpm, the fuel and ignition trim double to account for a second stage of nitrous.  Keep in mind that the map values interpolate between break points so it won't just snap from one cell value to the next.  Also, the trims are always there even if you don't activate your second stage of nitrous.  Not a perfect solution but a possible work around you could try.  

marv80
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Ok i see what you'r saying

Ok i see what you'r saying now this is what i didnt want to do. I thought there were other fixed trims that i could use other than changing my first stage set up Thank you for your help.

AEM_NS
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There is a user fuel trim

There is a user fuel trim that's based off an analog input.  You could ground out the input when activating the second nitrous stage and set the table to trim however you want at 0v.  There isn't a user ignition timing trim however.  It's not advisable, but you could technically ground out either the coolant temp or air temp input pins and force the ignition temp trim tables to one end and do you nitrous timing trim there.  This wouldn't be a good idea if you're actually basing other controls off of coolant or air temp.  In fact it's really not a good idea regardless.  The fact of the matter is that the Series 2 doesn't have two stage nitrous.  Trying to come up with a hokey work around isn't a very good idea and is entirely at your own risk.

AEM_GN
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So it sounds like you may be

So it sounds like you may be using the Nitrous tables right now for your first stage of nitrous and want something else for a second stage.

You can use the Fuel Trim Table and possibly the gear ign trim table as well(as long as you arent using the gear calculations for anything else). I have not tried this so I am not positive it will work the way you want it to.

AEM_NS
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Ahh good one GN.  I totally

Ahh good one GN.  I totally forgot about the gear trim table.  That'd work but again, kind of hokey.

marv80
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Thanks guys for the help!!!

Thanks guys for the help!!!