AEM in BRZ

[03Z33]

MP know's his stuff, I'm excited to see him offering this solution!

[ANTI_LAG]

Originally Posted by SkullWorks

then obviously I wasn't the only one who felt the posts were destructive and not well placed.

Your post just basically said...you can't do direct injection...AEM won't work...

that isn't really info is it?

You cant run the direct injection with a series 1 or 2, thus, you would have to piggyback only the secondary injectors, and because the injectors phase in and out, you wont be able to efficiently control everything.

Hopefully I elaborated more on the subject so you dont delete what I have posted again.

Dave

[Style]

Originally Posted by SkullWorks

The time has finally come.

My car is currently tooling around on an AEM Series 2.

Mitch @ MP tuning has sorted out a patch Harness to allow us to run AEM standalone ECU as a piggy back controlling the motor.

Is it done? Not Yet, but we will be on the Dyno in short order.

Our Goals:

1. Establish baseline for motor on Port injection only,

2. Determine overall gain with the utilization of DI.

3. E-85??? we will see what kind of headroom there is in the DI system

4. Turbo, the reason behind it all. I want 300WHP. this will be discussed further later :-) but not too much later.

Lucky! I wish they would of contacted me back but they didnt. I live like 10 mins from them

[Mitch P]

Here's an update.

We have started our preliminary on-vehicle testing with a Series 2 AEM EMS and we currently have a running engine with full control over the port injectors, ignition, quad cam control and 2step launch control. (soon DBW throttle control) So, for those that plan on getting rid of the DI system altogether, we should have a port injection only system ready very shortly. This kit will disable the factory traction control system since the stock ECU will have no longer have control of the throttle or ignition system to reduce engine power.

We are also interested in running the DI system and have begun research into controlling it through the S2 AEM. Right now, we are very optimistic that we'll be able to do it. Thankfully, the Denso DI driver box looks to be a relatively "stupid" driver box, in that it doesn't have any serial/CAN data lines to the stock ECU and is controlled entirely through timed PWM signals. This makes controlling the DI box much easier because you don't have to reverse engineer the system databus as far as control, error checking, etc... and then have to replicate it. It's very akin to a CDI system, which is just a high voltage power stage, where the ECU just needs to send it correctly timed signals and it does the rest.

The Denso DI driver box also contains a driver stage for the high pressure fuel pump's spill control valve, which controls the fuel rail pressure. Because of this driver stage, interfacing it to the AEM will be easier. The fuel pressure control is a bit interesting in that the cam lobe for the fuel pump has 3 lift events per engine cycle (three points of peak lift) from which you must also time your control signals for proper operation of the spill control valve.

We will be doing some further DI control testing in the near future with the AEM S2 box, but if we find that it is not feasible, we will concentrate our efforts more on the AEM Infinity kit for these cars, which is also under development.

[TheRipler]

Originally Posted by Mitch P

Thankfully, the Denso DI driver box looks to be a relatively "stupid" driver box, in that it doesn't have any serial/CAN data lines to the stock ECU and is controlled entirely through timed PWM signals. This makes controlling the DI box much easier because you don't have to reverse engineer the system databus as far as control, error checking, etc... and then have to replicate it. It's very akin to a CDI system, which is just a high voltage power stage, where the ECU just needs to send it correctly timed signals and it does the rest.

Hey, that's good news.

Thanks for the update. Looking forward to see what you guys do.

[Don@Accelerated]

Originally Posted by Visconti

I was only testing a header and giving the results I don't see the problem with that. Yeah, car makes more power without this particular header and a tune . That's a header problem not mine.

Feel free to jump in my thread. I won't have posts deleted. We can talk about this stuff all you want.

Where are the posts that have relevance. I can't tell what your arguing about here. I'll post actual data if we want to discuss issues w/ running the aem in piggy!

[Calum]

@Don@Accelerated, please do. I'm curious about what the issues might be and what's been done to work around them.

[mike2100]

Originally Posted by Don@Accelerated

Where are the posts that have relevance. I can't tell what your arguing about here.

I got a bit confused as well. That's the problem when posts get deleted...

[SkullWorks]

I'd like to know what valid data he thought he posted too...

Don Please post whatever problems it is you have had, but if you are just projecting problems based on 2nd hand or perceived/potential issues, please state them as such.

Mike

[Dustin@Dynosty]

Have you been able to successfully disable direct injection and still have throttle control? Unplugging the GDI CPU does not work nor did unplugging the direct injectors only. We have had our car on a Haltech EMS for the past couple months but have not found an easy way to disable direct injection.

[Don@Accelerated]

Originally Posted by Dustin@Dynosty

Have you been able to successfully disable direct injection and still have throttle control? Unplugging the GDI CPU does not work nor did unplugging the direct injectors only. We have had our car on a Haltech EMS for the past couple months but have not found an easy way to disable direct injection.

Yep. Theres that as well!

[Mitch P]

Please note that I said "(soon DBW throttle control)"

Will be adapting an AEM STi ecu to also control the DBW throttle so there's no issue with the stock ECU keeping the throttle closed when the DI is taken control of.

[Dustin@Dynosty]

No I understand, good luck with the project, just to be clear, I wasn't trying to stir up trouble, we are in the same boat so just curious how you were going to control or disable DI.

[Don@Accelerated]

Originally Posted by Mitch P

Please note that I said "(soon DBW throttle control)"

Will be adapting an AEM STi ecu to also control the DBW throttle so there's no issue with the stock ECU keeping the throttle closed when the DI is taken control of.

Not that the BRZ idles that great anyway, but i've installed quite a few AEM's in STI's etc and they all seem to have idle control issues. Theres just no adjustment really over the algorithm. Lets make sure if going that route they atleast give us a multiplier or a % change so that we don't run into those issues at least.

Don