Ems 4 questions | AEM
42 posts / 0 new
Last post
Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
Ems 4 questions

Hello, good day. I have a 1986 Corolla Gts with a 4age engine that I'm trying to figure out wiring of a few sensors. The engine electronics is a mix of Honda and Toyota sensors. My first question is I'm using a t3 36-1 reluctor wheel and I don't know if I bought the correct pick up sensor. I bought a Holley 554-124 Crank Sensor Hall Effect M12x1. second question is will the ems 4 work with factory Honda sensors like map (Omni 4bar), tps, and iat along with Toyota temp sensor. I will not be using any of the factory wiring as I no longer have it and it was in bad shape. I bought the 96" flying lead so harness will be all new. Coils I'm using Toyota 1nz smart coils and id1050x injectors. Any input will be helpful. I'm familiar with efi just not scratch build.

 

 

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
You need to check the spec

You need to check the spec sheet for the Holley sensor to see if it's compatible with your trigger wheel. Hall sensors can be sensitive to tooth size and spacing. The EMS-4 will work with any sensors so long as you have the calibration data for the sensor.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
 

 

Ok, I just looked at the tech sheet and it says nothing about size or "specs" for the sensor just the pin out. 

Here I see the tech sheet. 

http://documents.holley.com/199r10800rev2.pdf

 

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
Not really a tech sheet -

Not really a tech sheet - just instructions. You could either call them to try and get more specs or just assume it'll work and use it.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
Okay. 

Okay. 

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
Quick question. I've received

Quick question. I've received my ems4 with flying lead and I'm gonna be wiring up everything in the next few weeks. Do I have to have a cam signal also. It's a 36-1 wheel. I thought I read the ecu can run on just crank signal. If I do need cam how does one go about setting up a hall sensor on a aluminum adjustable cam gear?

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
Also would this be easier to

Also would this be easier to go back to the original dizzy that has a 4 point and a single point vr sensor. I have a cover that eliminates the cap and rotor button. (Was originally gonna go this route but thought Hall effect was gonna be easier to setup)  Would this be easier to wire up? 

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
The EMS-4 will run semi

The EMS-4 will run semi-sequential fueling and spark on crank only. I definitely suggest always using a real, crank mounted, high tooth count trigger wheel any time you can.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
okay, can the crank be hall

okay, can the crank be hall and the cam be vr? how many teeth does the cam sensor persay need? i can use the crank on the hall and use the dizzy for the cam vr. i do want this to be full sequential. 

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
If you want sequential then

If you want sequential then you must have a cam sensor. Crank and cam sensors can be any combination of Hall and/or VR. Cam trigger should be a single tooth. Yes you can use a single pulse from the distributor for cam.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
for afr i have a wideband kit

for afr i have a wideband kit that has a output do i wire up just the afr white to the output of the controller?

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
Yes but you'd also wire up

Yes but you'd also wire up sensor ground if the controller has one.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
sorry for all these questions

sorry for all these questions just really want to make sure i get all the wiring done correctly the first time. the tps and map i know its ground, vcc, and signal return but any chance you know if the pin out on the sensors themselve. i found two bits of info and says map is one way the tps is the opposite. thanks for all the help youve given so far.

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
We've never touched an '86

We've never touched an '86 Corolla before so can't really give you much help with wiring. If this is your first experience with stand alone engine management systems, I suggest checking out EFI University or HP Academy for some good training on the in's and out's of EFI setup and tuning. AEM is really only able to help with use of our products - we don't provide general EFI support. Sorry.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
no offense man, but i really

no offense man, but i really believe you havent read any of my questions throughly. im using your flying lead, im using standard honda sensors and all i asked was do you know if the map (ground, vcc, sig return) pin out on the sensor or does it even matter. i do know basic efi ask im ase master and toyota master tech but the damn sensors dont labels on them, i understanhd that your harness has been labeled but im asking honda sensor, map, tps. thanks for shoving me off to another one of your products or services. smh

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
I have read your questions.

I have read your questions. What you probably aren't realizing is that we generally make plug and play EMS solutions which means not having to do any wiring at the TPS or MAP sensor or any other sensors since we're using the stock harness. So long story short, we don't know how those sensors get wired. It's up to the end user to figure that out. If you're a mechanic, jump into your AllData account and look it up. Not passing you off to anything else but this is leg work that you need to do.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
i actually been looking and

i actually been looking (alldata) and couldnt find what i was looking for. but i search again after my last post and found it. thank you for understanding. im not a shop and no shop here in louisiana services your products so i have no real help from anyone but my own knowledge (this is first go at a build of this scale, im veery familar with hondata, chrome, factory efi and aloooot of sct garbage.) and this forum. i do have a few questions about setup of the program for igniton pickup but i will do much research first before i ask.

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
We're here to help but a lot

We're here to help but a lot of EMS-4 questions have been asked and answered already. There's a lot of info in the DIY/FAQ thread that you should spend time reading through. I'd also try searching here on our forum. We've helped countless users going from knowing very little to getting their EMS-4's fully setup and running well over the years. If you spend some time doing research, you'll probably find that the answers to your questions are already out there.

I've done this a long time and if you want my $.02 I'd say that going crank only is going to greatly simplify things.  I could have you drive two identical cars, one setup sequential and one setup semi-sequential, and you wouldn't be able to tell the difference.  If anything, the semi-sequential car might actually drive a little better but it certianly wouldn't be worse than sequential.  Also, I suggest going with a VR crank sensor as you can more easily filter it since noise can be a bit of an Achilles heel for the EMS-4 - read about it in the DIY/FAQ thread.  Hall Effect works well only when the signals are perfect and there's absolutely no noise.  Otherwise VR is better in this case.  Also, OEM Toyota distributors with built in cam/crank signals are a pain to deal with some times.  Try searching for signal bleeding.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
okay will do. if you can give

okay will do. if you can give me a calibration for hall crank 36-1 and vr cam single id like to try it first. i have the sheilded wire ran waay away from any coil packs.  also do you suggest a unversal vr sensor that i can try if it dont work out? 

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
Check the available base cals

Check the available base cals. There's a 36-1 VR cal. You'd start with that one and then set it up for Hall instead of VR - info on how to do this is on the forum. Unfortunately I don't have a specific VR sensor to suggest trying.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
question on the cam vr its

question on the cam vr its two wires, do i hook up ecu 12v and siginal or ecu ground and signal? 

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
Okay can you tell me how to

Okay can you tell me how to setup configure for 36-1 semi sequential my cam sensor in my dizzy doesn't seem to put out a signal. Right now I have the green (signal) and red (12v) hooked up tot he sensor and I'm getting nothing. Am I missing something?

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
Try checking the EMS-4 System

Try checking the EMS-4 System Schematic that's included in the AEMTuner>Instructions folder.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
Okay I hooked it up

Okay I hooked it up corrrectly and it's still not reading. Sooo any way you can give me a wizard calibration for 36-1 crank to fire coil on plug? I've been reading for the past two days and can't find anything to lead me in a direction? Please help it's not like I'm trying first. 

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
Idk if I'm reading this right

Idk if I'm reading this right but do I set sync teeth to 0 and then set the coil phasing to 0,6,6,0? To get the semi sequential firing of the coils. Do I have to do the same thing for injectors to fire correctly?

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
That's part of it. Spark

That's part of it. Spark Teeth and Fuel Teeth get set to 12 and Wheel Teeth stays 24. Injector phasing is usually 0 9 3 6. Fuel map gets cut in half since there are two injector events per cycle. Sync Teeth 0, turn cam input off, and coil phasing is 0 6 6 0. Need to get the crank signal working before this stuff matter though.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
crank is working right now

crank is working right now

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
okay im gonna input this when

okay im gonna input this when i get off work and give it a go. the cuting fuel map in half do you mean i need to reduce the whole map to half the value or it will be to rich? do i change the injector fazing the same as the coil?

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
Okay I managed to get it to

Okay I managed to get it to pop off now I need to get fueling correct as it's barely running. Question about program itself. The independent boxs how can you customize the size of them to fit the main box. Like I have a channel box, options base fuel and fuel map box but the are small and want to spread them out to fill in the complete grey area so I can watch all the data at once instead of switch from one full size box to another.

AEM_NS
Offline
Last seen: 1 hour 26 min ago
Joined: 06/06/2014 - 09:31
Just click and drag to resize

Just click and drag to resize. If you can't it's because you have your display set to something other than 100%.

Wichers123
Offline
Last seen: 3 years 1 week ago
Joined: 07/09/2017 - 19:06
Okay, can you tell me why

Okay, can you tell me why when the engine starts I loose USB connection should I be using a serial to usb adapter. I'm trying to see what's going on while it running but it cuts me off with a message make sure ecu is powered up. It's running pretty funky and I think its could ting errors but I can see them cause it kicks me

Pages