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Old 05-03-2011, 02:17 AM   #1
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Default EMS 4 on an 01 NOOB beware

As the title states I am a noob to the while tuning aspect mmuch less AEM computers. Also as stated I just got my just released EMS 4. I am having my coworker help me with the harness, but I want to learn how to do the computer work. I have been messing around with the V2 software to get the hang of it and familerize my self with it.

The car will have 550cc injectors, the rotrex, and a built engine. My goal is to run max 250hp. I will add an intercooler (in due time) later.

Has anyone used this new computer yet?

Does anyone have a file for the 01+ engine that I can look at?

Any helpfull advice besides read the book?

I am removing the egr, the alternator will be switched with a NA 1.8 alternator, AFM will be gone and I have no P/S or A/C.

I am planning on the running stock sensors, VVT, stock coils, MAP, variable intake,

Thank you in advance for any help.

Have a great day,
Jared
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Old 05-03-2011, 07:31 PM   #2
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good luck with your setup,out of interest can you tell me your engine code.thx
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Old 05-03-2011, 07:38 PM   #3
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Those ECU's are interesting. I played around with one in an AEM booth during a trade show. Slick & inexpensive. Good luck with it!
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Old 05-03-2011, 11:24 PM   #4
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Can any one confirm if the 01+ coils have the ignite in the coils.

Have a great day,
Jared
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Old 05-03-2011, 11:29 PM   #5
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Quote:
Originally Posted by adam mx5 View Post
good luck with your setup,out of interest can you tell me your engine code.thx
All I can say its from a 2001. Where can I find the code?

Have a great day,
jared
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Old 05-04-2011, 03:58 AM   #6
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Thanks for the reply. Sorry to hijack your post but I'm having grief with my 01 plate vvt. Everything under bonnet is marked bp4w and ecu is marked bp6m. Just interested to see what yours was as I think it's the same model. Thanks again.
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Old 05-04-2011, 04:32 AM   #7
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You should be able to start with the cal file for a '94 and go from there. You'll be doing a lot of alterations, though. Start with reading through the entire AEM section, giving specific attention to my "stupid questions" thread as well as any thread/post by J_Man or Jason_C.
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Old 06-16-2011, 10:04 PM   #8
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Ok, so I got my car running. My coworker who is doing the tuning spent all day on sunday building a map from scratch. He didnt get the IAC or VVT working. He ended up burning up a coil as well.

Car drove well, but for the lack of the IAC. Start up was a bitch. Come to find out there was some feedback in the adapter harness he built.

On tuesday he was working on locating the source of the feedback and getting the IAC working. He managed to burn up at least 3 more coils. Saying that it was from him trying to set idle. I personally have no clue how that works but maybe you all can fill me in.

Usually he is good with this, but I am loosing all confidance in him at this point. Since now he shows absolutely no intrest in working on the car. His solution is to use the 1.6 or 1.8 coils and plug wires. To me this is completely unaceptable.

He also complains that he cant get vvt to work on the factory cam and crank snesor wheels.

I need help to get my girl up and running. I am getting so tired of not her running.

I dont know how to upload the file so if you would not mind helping me out that would be great. I can sned you the file that I have.

Have a great day,
Jared
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Old 06-18-2011, 12:44 AM   #9
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Is there anyone out there that can help out?

Have a great day,
Jared
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Old 06-18-2011, 02:10 AM   #10
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Jared, email me the cal file and let me take a look. I discussed dwell with him today, there's no reason to be nuking coils.
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Old 06-18-2011, 02:14 AM   #11
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He shouldn't be burning up coils. The ECU would be setup the same for the NA coils as they are the NB COPs. The output edge anyway. He either has the output edge wrong (in which case he most likely wouldn't be able to get the engine started) or he's simply using way too much dwell.

He probably won't be able to get the VVT working with the factory cam/crank combo. We're running into a similar issue with Haltech and the VVT engine. We'll need to add another cam target on the exhaust cam for a static angle reference. I haven't looked at the EMS-4 much, but without proper trigger coding in the firmware for the unique Mazda trigger, any ECU will struggle to run the VVT.
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Old 06-18-2011, 02:33 AM   #12
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Looks like a pretty cool unit. Given the few extra features it has over my Haltech I might have gone this direction had it been out when I was ECU shopping. Is the idle control closed loop or open loop?
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Old 06-27-2011, 04:16 PM   #13
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Quote:
Originally Posted by jfornachon View Post
Ok, so I got my car running. My coworker who is doing the tuning spent all day on sunday building a map from scratch. He didnt get the IAC or VVT working. He ended up burning up a coil as well.

Car drove well, but for the lack of the IAC. Start up was a bitch. Come to find out there was some feedback in the adapter harness he built.
I think he is upset because it took him 4 months to build a motor and had to go back and fix damaged components because of his poor assembly process. Then to have me make him a harness that sat for three weeks while he sorted out his oil consumption issues. Then he gives me the car one week before I am supposed to leave for vacation and is upset because I could not get it all completed in that week. There is no problem with the harness. the car is backfeeding power on a few aux I/O pins, and the ems4 doesn't like it. This has nothing to do with my harness just an issue that needs to be sorted out because I had to complete, install, and tune a car in one day, That has never been done before.

Quote:
Originally Posted by jfornachon View Post
On tuesday he was working on locating the source of the feedback and getting the IAC working. He managed to burn up at least 3 more coils. Saying that it was from him trying to set idle. I personally have no clue how that works but maybe you all can fill me in.

Usually he is good with this, but I am loosing all confidance in him at this point. Since now he shows absolutely no intrest in working on the car. His solution is to use the 1.6 or 1.8 coils and plug wires. To me this is completely unaceptable.

The way the Series 1 ecus calculate dwell and the way the series two/EMS 4 calculate it are different so the numbers don't just convert over. They are really close but at 1000rpm the dwell changes enough to burn up the coil.

I suggested to use early coils because we have them in the shop. He didn't have any money to buy more coils. So, I was just trying to help him out because of the short time constraints.

Quote:
Originally Posted by jfornachon View Post
He also complains that he cant get vvt to work on the factory cam and crank snesor wheel
Quote:
Originally Posted by C. Ludwig View Post
He probably won't be able to get the VVT working with the factory cam/crank combo. We're running into a similar issue with Haltech and the VVT engine. We'll need to add another cam target on the exhaust cam for a static angle reference. I haven't looked at the EMS-4 much, but without proper trigger coding in the firmware for the unique Mazda trigger, any ECU will struggle to run the VVT.
This is the same thing I have told him many times. He just chooses not to listen.

Quote:
Originally Posted by Savington View Post
Jared, email me the cal file and let me take a look. I discussed dwell with him today, there's no reason to be nuking coils.
I received your email on Friday. Thank you by the way. he was already out of money and coils so there was really nothing I could have don't at that point.



Quote:
Originally Posted by falcon View Post
Is the idle control closed loop or open loop?
Closed

The OP shows no appreciation in all the time and effort I have put into this project for him. I have made and installed all of his components for way less then cost and spent 10hrs on the dyno for $200 total. He always wants to do it his way and takes no input from anyone else but, has no competence in completing any of the work himself. running your mouth with no factual information because you are frustrated with your own issues is not a way to get your car completed.

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