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Ukfox89
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Joined: 03/14/2017 - 12:08
AEM Infinity 8 w/ 2015-2017 Coyote PnP

Hi AEM

i am currently building a car with a 2015-2017 coyote aluminator crate engine. i have your AEM infinity 8 ecu with the PNP harness to be used standalone (without the ford control pack). 

I recieved my harness the other day and realized that the pig tail for the main harness (AEM PnP harness - coyote engine harness) is not the same as the 11-14. I can switch to an 11-14 harness no problem, the only thing i would have to change is the VVT pigtails which i can cut and solder to the 11-14 harness. 

My concern is, will the AEM ECU support the 15-17 valvetrain differneces? i have spoken with Ford Racing group to determine if there are any differences between the type of sensors used on the 15-17 compared to the 11-14. i have not recieved a response yet other than the intake and exhaust cams use the same sensors, but im not sure if they are referring to the cam sensors or the VVT sensors. 

What are my options or plan forward with this? is there a software update that can be made to make this ECU compatible with the new 15-17 engine?

My car is finished and i have many races planned for this year im hoping to make starting in mid april, im trying to find an option that allows me to use the AEM with the CD-7 dash and also not have to dismantle my engine and change hardware such as cams or lock out phasers (unless this can be done externally to the engine). The car is a dedicated drag race car, so most of the creature comforts im okay without. 

Thanks very much for your time!

 

AEM_NS
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Joined: 06/06/2014 - 09:31
Currently, the Infinity only

Currently, the Infinity only supports the '11-'14 Coyote engine. We've not run a '15+ engine yet so we've not been able to quantify the differences between the two models but as we understand it, something with the VTC setup is different. This isn't the news you want to hear but we currently have no way of running the '15+ engine. You'd have to essentially make it '11-'14 spec in order to run it with the Infinity.

Supporting the '15+ Coyote is on our "radar" but it's not something we're currently working on or plan to work on very soon.  One last but not very good option is to run semi-sequential on the crank only with no VTC at all.  

Ukfox89
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Joined: 03/14/2017 - 12:08
if the sensor types are the

if the sensor types are the same for the VTC then can it be a simple configuration change in the ECU setup? i understand with releasing product there are certain steps to be taken and has to be properly trial ran. This engine platform is 2 years old, and for the aftermarket enthusiast wanting a factory built engine, it seems the 15-17 aluminator engine is the only way to go other than having a custom engien built. 

I can run the ford control pack and replace the stock ecu with the AEm, but i run into the same road block. im still trying to find a deffinate answer to what my plan forward is, you say one last option but not a good one, what are the cons to running semi sequential on the crank with no VTC at all? like i said this is a drag car with a boosted applciation, mid range power is not my foremost concern as the car is WOT 99% of the time. 

Any help would be much appreciated, i have a lot of money tied up in the engine, making this platform work in my car and also the engine management system all together. 

Thanks for your quick reply, 

Ben

AEM_NS
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It looks like it's going to

It looks like it's going to be a compromise one way or another. You'll either have to change all the engine hardware necessary to make your engine match the older spec (this is what others have had to do) or run on crank only in semi-sequential without VTC. The downside to running semi-seq without VTC is that you're running without VTC. The quad variable cams is basically what makes the Coyote motor so impressive but if this is a serious race effort, you won't be running stock cams which will require either limiting the cam phasers or locking them out entirely so it may become a moot point anyways. The only other downside is that you lose a little head room with your injectors since they'll be fired twice per cycle but that's fixed by sizing the injectors correctly.  Back to running race cams, if you're going to lose VTC because of big cams then you can modify one of the cams to have a single tooth and run sequential.  Or if leaving the stock cams or running small-ish cams, you can run crank only and wait until we support these newer motors.  Like I said, it's going to be a compromise because we don't support these motors yet unfortunately.

AEM_BB
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Joined: 06/04/2014 - 11:53
As mentioned above, the 2015+

As mentioned above, the 2015+ engine in stock form is currently not supported. However, we have run a 2015+ Coyote engine on Infinity, but some extensive modifications were made to the engine to treat it as a '11-14 model. The following parts were changed on the engine:

  • Cam shafts
  • Cam phasers
  • Cam timing chains
  • Lower timing chain sprocket (2015 version may be compatible/equivalent)
  • The “Boss 302” cast-iron chain tensioner was recommended by some of our racers as they have found it to be a more robust part, although it is not necessary

With these changes, as well as a change to the 2015+ ECU header connector, we were able to run the engine successfully using the same base cal, with control of all 4 Ti-VCT cams.

Otherwise, as NS suggested, you can run the engine crank-only without VVC, or modify one of the trigger patterns on the camshaft (probably would recommend passenger-side intake cam since it's a Hall sensor signal) to only have a single "tooth". Doing so would allow you to run full sequential, but again without any VVC control. 

 

 

 

Ukfox89
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Joined: 03/14/2017 - 12:08
the use of the VCT is not

the use of the VCT is not mandatory for me. for some of the classes i run during the race season, they require stock cams or stock blocks which limit which cams i can and can not run. So ill be keeping the 15-17 cams. Im looking for an option to keep the AEM and not use the ford racing control pack and also ideally not have to tear into the engine. It seems im left with two options

Option 1: buy 11-14 GT harness (which will plug into my AEM harness) and change out the cam phasers with a delete kit which will require removal of the timing cover and valve covers. This will allow the harness to plug in and essentially be an 11-14 engine. 

Option 2: buy 11-14 Gt harness and just leave the VCT unplugged? if leaving the VCT unplugged, how are the cams locked out? and is this a reliable way to leave it and be able to race the car. Like previously mentioned, im not worried about under the curve power or mid range as the car will be WOT 99% of the time and with the powerglide and turbo setup, power will be in the upper revs and controlable via other methods. 

Thanks, 

AEM_NS
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Last seen: 34 min 48 sec ago
Joined: 06/06/2014 - 09:31
It takes oil pressure to make

It takes oil pressure to make the VCT phasers move and this oil flow is controlled by the VCT actuators. If they're unplugged, no oil can enter the phasers therefore they should not move. That doesn't mean that they're locked and won't move at all but it does disable them from advancing/retarding like they would normally. Can you expect them to never move by simply unplugging the actuators? Nobody can answer that for you. Sounds like the safest bet would be to lock them out.