If you tune an AEM EMS and then get a batch of bad gas, will the unit pull timing or will it just blindly run the map and kill you car? Is there a way to fix that?


Also if you tune an Evo with an EMS and a wideband, will that allow the unit to completely adjust itself to stay within the A/F tuned no matter how how or cold it gets?

 

If you set up knock control it will, how much depends on how much timing you pull per knock volt and how quickly you have it restore timing to your maps value. This is dependent on the tuner, but it's not hard to setup.

You have to set the fuel modification for air temp, although there is the option for setting up closed loop fueling also. You really want to try to get the car dialed in as close as possible first before using closed loop feedback though, don't use it cover up half *** tuning.

 

So what kind of safety features can you add to protect the Evo While using a AEM EMS?

 

Maybe you should read some of the other threads in this very section?

https://www.evolutionm.net/forums/sh...6&page=1&pp=15

 

Maybe answer the question?

 

Well if you want you can richen the car up when intake temps get high.
On my DSM I had timing start to get pulled back and richened up the fuel map slightly when coolant temps went over 200 degrees. Little things like that. If you want to get crazy you can adjust individual cylinder fuel trims based of EGT feedback (if you want to buy 4 egt sensors). I'd recomend downloading the software from AEM and looking through all the menus/tables.

 

+1


You can also download the user guide and learn quite a bit about what you can do with it from there.

 

Is there a link to the software?

 

I was a victim of this. I went and filled up my BP 93 octane gas from the SAME PLACE I fill all the time. And guess what..my perfectly tuned map started knocking..(dangerously). Good thing GTEVO (TOmmy) had time to take a look at my .cal and add some more safety knock control features as well as tiiming retard. I had to get rid of half the tank and dump 104 octane race fuel so I can also run the car properly. Of course I did lower the boost too. Smart thing to do would be to setup an anlterntive map incase you get crappy gas.... just so that you dont have to freak out when your car starts to knock.