AEM EMS-4

Talk EMS and Computer related performance

AEM EMS-4

Postby toayoztan » Mon Feb 21, 2011 7:31 am

http://www.aemelectronics.com/engine-ma ... system-58/

http://mr2oc.com/showthread.php?t=413033&highlight=Ems4

http://www.youtube.com/watch?v=HrKKepZwwtU

So I guess AEM just came out with this unit recently. It's strictly for the 4-bangers. Supposed to be better than the Series 1 (I believe Series 2 hasn't come out yet for the 3sgte?), but this ems-4 system will be using the Series2 'stuff'.

Anyways, what do you all think of this? I'm looking for an EMS. Was really considering the AEM (if one could be had for a good price), and I ran into this. I don't need a PnP, since i'm in the process of rebuilding the entire engine and I wouldn't mind putting in some fresh wires too (they have a 96" harness option). RSP (race street performance) supposedly will be offering a PnP route, in case I decide on that.

If it all sounds good, I may just go with this and see how it goes.

Opinions? Most of the tech info can be found on AEM link above.

Goal - 450awhp+ (ish), fully built motor, yadda yadda.

If I could have found a series 1 cheap enough, i would have liked to get it (as it usually comes with sensors, etc. as a package deals time to time on mr2oc), but this unit seems pretty cheap enough to just buy new (granted i'll still need to wire it up, get the sensors, etc).

Bryan
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Re: AEM EMS-4

Postby toayoztan » Mon Feb 21, 2011 8:44 am

Oh, and a quick question. On the series one aem listed on their website, the part number for the 93-94 alltrac is the same for the 93-95 mr2 turbo. If i'm not mistaken, the 93-95 mr2 turbo has the 3rd gen 3sgte (right? sorry, but don't know much about the mr2's), so why would they utilize the same unit? And i'm guessing the 93-94 was for the production year (confused why 94 is mentioned)...

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Re: AEM EMS-4

Postby BoostedBlueToyotas » Mon Feb 21, 2011 2:19 pm

All MR2 turbos (91-95) sold in the US had the GenII 3sgte
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Re: AEM EMS-4

Postby klue » Mon Feb 21, 2011 4:07 pm

It looks pretty interesting!
I would assume from the design its made more for motorcycles/snowmobile/atv etc but certainly usable on any 4 cylinder.
The new software is much better than aem PRO. Go for it
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Re: AEM EMS-4

Postby toayoztan » Mon Feb 21, 2011 4:42 pm

BoostedBlueToyotas wrote:All MR2 turbos (91-95) sold in the US had the GenII 3sgte


Ah, thanks. I assume then the 93-95 is the "rev2/version2" of the 2nd gen 3sgte, found on the 93 alltrac?

Yeah it looks pretty interesting though. I should still be able to wire up the 3rd plug of our stock ecu (that goes to the dash area) to this AEM ems-4 unit, yeah?

I don't have AC or cruise control either.

RSP hasn't made the PnP yet for our car, but like I said, I may just use the 96" loom to replace the engine harness. Obviously, i'll be using the stock harnesses for all else.

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Re: AEM EMS-4

Postby celicasilfee » Mon Feb 21, 2011 11:37 pm

I'm also shopping for engine management & this looks like a great option between Emanage Ultimate and the $1000 (used) AEM units. Anyone have any viable information of how this would work with a 2nd gen motor? I'm only looking for about 350awhp right now, but I want something that will keep my options open for future plans.

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Re: AEM EMS-4

Postby toayoztan » Tue Feb 22, 2011 6:18 am

celicasilfee wrote:I'm also shopping for engine management & this looks like a great option between Emanage Ultimate and the $1000 (used) AEM units. Anyone have any viable information of how this would work with a 2nd gen motor? I'm only looking for about 350awhp right now, but I want something that will keep my options open for future plans.

Subscribing! :shoots:


Are you curious how it will hook up? or how well it will work?

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Re: AEM EMS-4

Postby celicasilfee » Tue Feb 22, 2011 1:23 pm

^both. Basically ease of install vs price. I know the other AEM's are p&p, but they're a bit out of my price range. The Emanage Ultimate is in my price range, but from what I hear, it's a bitch to get it installed & working right. Whatever system I go with, I'll be installing myself & taking to a tuner to get it dyno tuned. I know of 2 tuners, both almost equal distances from me: one certified with AEM, one certified with Emanage, so I'm not worried about that aspect.... mainly just the install & having things as ready as I can for when I see whichever tuner.
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Re: AEM EMS-4

Postby toayoztan » Tue Feb 22, 2011 7:17 pm

Well, there certainly isn't a true PnP system for our cars with the EMS-4.

However, if you have our ECU pinout diagram, it's not too hard to see which ones hook up to which pinout on the EMS-4. I would suggest an "extension" harness to prevent taking apart the stock harness. I'll be going with the 96" harness most likely.

Only thing i'm really curious about is how the 3rd ecu plug (that goes to the dash area? like the AC, speedo, etc) will hook into this (i'm sure it'll be able to).

How well will it work? IMO from reading up, generally people have issues with the Series1 software/hardware, while the Series2 has shown considerable improvement. There isn't a PnP series2 for our cars, and the universal series2 is pretty expensive (for me anyway). That's where the EMS-4 comes into play. You get the benefit of the Series2 software/hardware (it uses the same program) at a fraction of the price due to limitations for a 4-cylinder only. However, you can't run like dual stage injectors, dual cam control (i think subaru will have issues with this?), etc. But it'll work for me right now, as I really am looking to get rid of the AFM.

I'll probably be calling up RSP (real street performance), ask a few questions, and probably put in an order (i'll ask them about the PnP they are in the process of making too).

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Re: AEM EMS-4

Postby toayoztan » Wed Feb 23, 2011 3:01 am

Any of you with EMS experience? Someone with experience surely has something to say!? :shrug: lol

(about this ems, not suggestions on other ones)

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Re: AEM EMS-4

Postby celicasilfee » Wed Feb 23, 2011 4:28 am

Agreed! From the reading I did, this seems like the one of the best options for us now, even if we do have to repin. I already have a jumper harness, so that won't be an issue for me. I want to get rid of my AFM, too, plus have a good software that will control everything I need it to... but without spending almost as much as I have into the car. So far, I'm loving this! I believe I'll be doing the same as you: asking a few questions & placing an order.
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Re: AEM EMS-4

Postby tubasteve » Tue May 29, 2012 5:36 am

dead thread bump. anyone jump ship to this, if not im buynig the thursday and ill tell you in a month.
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Re: AEM EMS-4

Postby toayoztan » Tue May 29, 2012 5:46 am

I've bought this, not installed yet of course, with the 96" loom, and of course the other sensors I'll need for any other tuning you'd go with (MAP, etc.).

So far, haven't really heard complaints from it, as it uses the same software as the version2.

Again, just need to realize the limitations it has, being it only can do like 4 injectors, etc. It should work for what most of us need.

Bryan
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Re: AEM EMS-4

Postby OutToWinPAHC » Tue May 29, 2012 9:17 am

The EMS-4 is what I will be using on my car. Things awesome for the money, I just did one on a SR20DET with a VE neo head and IT'b setup wasn't bad at all, made 520 tuned last week to the wheels on my friends driftcar
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Re: AEM EMS-4

Postby tubasteve » Wed May 30, 2012 12:33 am

good to hear, im not worried about the sensors as they are dime a dozen at my shop. i was really worried about complaints about the tuning software, unreliability. this car will not really be street driven anymore, just had a hour talk with my engine designer(machinist). ordered some pistons and bottom end to play with on this setup. ill be ordering it this thrusday with the short harness. unless there is a reason i should need/want to go long.
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