AEM EMS Engine Management System
The unit itself is plug and play in that it uses stock harnesses if you buy an application specific model, and it comes with a base map that will run the car if you use the stock setup (i.e. don't convert to MAP instead of MAF for air metering). It will not be tuned for performance, but it will run. Funny we were talking about this at BM Tranny the other day...my belief is "I guess it depends upon your definition of plug and play".
A standalone like the AEM EMS, Haltech, GEMS or any other unit is not advisable unless you can stand some downtime and are either experienced with standalones or have a shop who is. There are plenty of AEM certified shops out there if you take the time to find them.
A standalone like the AEM EMS, Haltech, GEMS or any other unit is not advisable unless you can stand some downtime and are either experienced with standalones or have a shop who is. There are plenty of AEM certified shops out there if you take the time to find them.
Hello,
That is my car in the photo and I'd like to correct a bit of misinformation in this thread.
1.) That is the EMS1310 box designed for the 2G DSM. It is NOT the race ECU; you cannot buy that unit anymore. Most people looking to run an EMS on an unsupported model use one of the other boxes such as the Honda boxes. The unit had the harness extended for packaging reasons. The box won't fit where the factory computer is; they have a newer smaller version of the EMS out soon; that is when the EVO8 box will be released. That is what is holding up the release.
2.) I have the "mess" of wires there because I have a lot of discarded sensors and new sensors installed, etc. I just wanted to have more wire to mess with. I intend to eventually eliminate the factory harness to go with something lighter and simpler. This is how I prefer to do things. My car is in the process of losing most the the emissions equipment such and evap purge/vent solenoids, EGR, etc.
3.) The unit is easy to INSTALL, but that doesn't mean you can even get the car to start with the basemap. It requires a laptop, some downtime and someone with fairly extensive knowledge of how a car (any modern fuel injected car) will work. It is NOT simply a fuel map and a timing map that must be adapted. There are literally dozens of additional tables and probably 100 other variables that must be set right to make the car work properly. Those additional maps is what makes a standalone powerful and flexible.
4.) The car is running now and pulling very hard at wastegate pressure on a 3037S turbo. I just got a set of 900 cc injectors in so I can run more boost on pump gas. To my knowledge, this is as far as anyone is with the EVO8 and the EMS. I drive the car every day. I also have the laptop in it every day and datalog/tune.
5.) This is not for the regular guy who wants to drop something in and make more power and be done with it. The owner/operator of the car needs to be able to tune very well to make it work. You must have a good laptop. Proficiency with an S-AFC or eManage is not enough. If you are in that boat and intent on learning a lot about tuning, this is a great way to go, but you will need to wait until some guys are passing around some very drivable maps to start with and go from there. It will take a lot of time to learn.
6.) If you don't know what you are doing, you can make your car 100% inoperable, fry coilpacks or blow it up in a hearbeat. That being said, you should be fairly close once the EVO8 ECU is released and you have some guys sharing their maps to have as a better starting point. The basemaps from AEM are there strictly to protect their liability. It will do nothing but foul plugs and choke on gas on the basemap.
7.) (ADDTL NOTE) Regarding emissions; it is technically not legal on street cars because it is not OBD2 compatible. No more check engine lights; no more CEL codes. All gone. If your testing stations try to hook up to the OBD2 port they will not be able to talk to the ECU. Can it pass the sniffer? It can assuming you have a cat, etc. It all depends on the rest of your system and your tuning, but it is possible.
If anyone has question, feel free to contact me.
Mark
www.Quantum-Racing.com
That is my car in the photo and I'd like to correct a bit of misinformation in this thread.
1.) That is the EMS1310 box designed for the 2G DSM. It is NOT the race ECU; you cannot buy that unit anymore. Most people looking to run an EMS on an unsupported model use one of the other boxes such as the Honda boxes. The unit had the harness extended for packaging reasons. The box won't fit where the factory computer is; they have a newer smaller version of the EMS out soon; that is when the EVO8 box will be released. That is what is holding up the release.
2.) I have the "mess" of wires there because I have a lot of discarded sensors and new sensors installed, etc. I just wanted to have more wire to mess with. I intend to eventually eliminate the factory harness to go with something lighter and simpler. This is how I prefer to do things. My car is in the process of losing most the the emissions equipment such and evap purge/vent solenoids, EGR, etc.
3.) The unit is easy to INSTALL, but that doesn't mean you can even get the car to start with the basemap. It requires a laptop, some downtime and someone with fairly extensive knowledge of how a car (any modern fuel injected car) will work. It is NOT simply a fuel map and a timing map that must be adapted. There are literally dozens of additional tables and probably 100 other variables that must be set right to make the car work properly. Those additional maps is what makes a standalone powerful and flexible.
4.) The car is running now and pulling very hard at wastegate pressure on a 3037S turbo. I just got a set of 900 cc injectors in so I can run more boost on pump gas. To my knowledge, this is as far as anyone is with the EVO8 and the EMS. I drive the car every day. I also have the laptop in it every day and datalog/tune.
5.) This is not for the regular guy who wants to drop something in and make more power and be done with it. The owner/operator of the car needs to be able to tune very well to make it work. You must have a good laptop. Proficiency with an S-AFC or eManage is not enough. If you are in that boat and intent on learning a lot about tuning, this is a great way to go, but you will need to wait until some guys are passing around some very drivable maps to start with and go from there. It will take a lot of time to learn.
6.) If you don't know what you are doing, you can make your car 100% inoperable, fry coilpacks or blow it up in a hearbeat. That being said, you should be fairly close once the EVO8 ECU is released and you have some guys sharing their maps to have as a better starting point. The basemaps from AEM are there strictly to protect their liability. It will do nothing but foul plugs and choke on gas on the basemap.
7.) (ADDTL NOTE) Regarding emissions; it is technically not legal on street cars because it is not OBD2 compatible. No more check engine lights; no more CEL codes. All gone. If your testing stations try to hook up to the OBD2 port they will not be able to talk to the ECU. Can it pass the sniffer? It can assuming you have a cat, etc. It all depends on the rest of your system and your tuning, but it is possible.
If anyone has question, feel free to contact me.
Mark
www.Quantum-Racing.com
Last edited by QuantumEVO; Sep 23, 2003 at 11:31 AM.
In Timeout
Joined: Jul 2003
Posts: 486
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From: Penn State University
Making the box smaller would be a HUGE improvement...that way it can be fit under the dash. Someone needs to rig up a EMS to a LCD in the front...that would be cool...although you would need to hide a computer somewhere
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