▀▄ eas | ESS S63TÜ M5/M6 Piggyback Backend ECU Software released

[tom @ eas]

Backend ECU software from ESS has been released for the 2012+ S63TÜ M5/M6 for use with aftermarket piggyback controllers that control boost, etc. This targets a number of areas not accessible to piggyback type controllers for maximum performance gains.



The ESS Backend Software File offers the following options:

- Correct AFR control for higher boost pressure. AFR target is set to 12:1 under high load/boost conditions.
- Top Speed Governor (VMAX) removal
- Increased RPM limiter (+400 RPM)
- Removal of catalytic converter diagnostic functionality (for off road use only)
- Removal of Cat Heat Cycle/Cold Start (for off road use only)
- Updates can be performed via OBD2

Flashing is performed in-house at our facility in Anaheim, CA or ESS's facility in AZ.

Note: This software does not offer any performance gains without a piggyback controller installed. The piggyback ECU software intended to be used as an elevated backend platform, specifically designed for piggyback type tuning devices.

[13M5F10]

What's the benefit of going this route over a tune? I may have misunderstood but it seems like you need the DMEs to unlock them. Is that correct?

Just curious. I would think if I have to ship my DMEs I might as well go with a tune. Most go with piggy as its removable and doesn't required unlocking the DMEs and voiding powertrain warranty.

Thoughts?

[MCarsFan]

Originally Posted by 13M5F10

What's the benefit of going this route over a tune? I may have misunderstood but it seems like you need the DMEs to unlock them. Is that correct?

Just curious. I would think if I have to ship my DMEs I might as well go with a tune. Most go with piggy as its removable and doesn't required unlocking the DMEs and voiding powertrain warranty.

Thoughts?

+1

[AstonMartian777]

what's the point of rpm limiter removal ?

[Dracon]

Originally Posted by 13M5F10

What's the benefit of going this route over a tune? I may have misunderstood but it seems like you need the DMEs to unlock them. Is that correct?

Just curious. I would think if I have to ship my DMEs I might as well go with a tune. Most go with piggy as its removable and doesn't required unlocking the DMEs and voiding powertrain warranty.

Thoughts?

This is a tune just like others, however, it's designed to be paired with something like a JB4 as the JB4 can't access all of the engine parameters. It's where BMS eventually wants to get to once initial flashing over OBDII can be done (so you don't have to ship your DMEs out).

In the N54/N55 community, having a JB4 + Backend Flash gives them maximum control over the parameters and allows them to fine tune everything along with having all the capabilities of the JB4.

[tom @ eas]

Originally Posted by Dracon

This is a tune just like others, however, it's designed to be paired with something like a JB4 as the JB4 can't access all of the engine parameters. It's where BMS eventually wants to get to once initial flashing over OBDII can be done (so you don't have to ship your DMEs out).

In the N54/N55 community, having a JB4 + Backend Flash gives them maximum control over the parameters and allows them to fine tune everything along with having all the capabilities of the JB4.

Spot on.

At this time, the DMEs must be bench flashed once in order to remain unlocked.

We always prefer the flash route, but this provides an elevated platform to piggybacks to work from, as well as the other options that were not available previously. BMW can detect piggyback use even if its removed before service. This usually doesn't become an issue unless a failed part is being claimed under warranty and PUMA case is opened.

Some prefer piggyback tuning, some prefer full flash. Choice is up to the end user.

Originally Posted by AstonMartian777

what's the point of rpm limiter removal ?

RPM limit is raised, not removed.

[M6Pilot]

It sounds like what a few other members on here have already been doing for a little while! especially the ones that have been consistently setting new records, flash + jb4 + this + that. Hire someone from government to break the code so we can just get the obd2 flash without sending in dme.

[AstonMartian777]

Originally Posted by tom @ eas

Spot on.

At this time, the DMEs must be bench flashed once in order to remain unlocked.

We always prefer the flash route, but this provides an elevated platform to piggybacks to work from, as well as the other options that were not available previously. BMW can detect piggyback use even if its removed before service. This usually doesn't become an issue unless a failed part is being claimed under warranty and PUMA case is opened.

Some prefer piggyback tuning, some prefer full flash. Choice is up to the end user.


RPM limit is raised, not removed.

What's the point of raising it, power dying off after 5500 rpm

[SuckaGDog]

So to take advantage of this new back end software you have to send in your DME to bench flash? Or is the new software to be updated on the actual piggyback module?

[tom @ eas]

Originally Posted by SuckaGDog

So to take advantage of this new back end software you have to send in your DME to bench flash? Or is the new software to be updated on the actual piggyback module?

Software is an elevated platform for the DMEs, in which provides additional areas not controlled or accessed from your choice of piggyback controller. Without a piggyback, there are zero gains from the backend flash.

We would need the DMEs here for flashing. If not local, they can be overnighted and returned the very next day.

[AstonMartian777]

Originally Posted by tom @ eas

Software is an elevated platform for the DMEs, in which provides additional areas not controlled or accessed from your choice of piggyback controller. Without a piggyback, there are zero gains from the backend flash.

We would need the DMEs here for flashing. If not local, they can be overnighted and returned the very next day.

What advantages over a JB4 + flash ? I don't think you're specific enough because maybe this is a great product that you're offering, how will methanol be integrated, how will it work with upgraded turbos, please give us a better picture. Thanks !

[tom @ eas]

Originally Posted by AstonMartian777

What advantages over a JB4 + flash ? I don't think you're specific enough because maybe this is a great product that you're offering, how will methanol be integrated, how will it work with upgraded turbos, please give us a better picture. Thanks !

The backend flash is has no effect on power gains, instead it targets a more precise AFR in which your preferred piggyback controller (JB4 in your case) can then take full advantage of in order to better work together.

All fine tuning (and methanol control) is still handed by your piggyback settings, this is an elevated platform to work from which will offer a bit more to work from.

[Dracon]

Originally Posted by AstonMartian777

What advantages over a JB4 + flash ? I don't think you're specific enough because maybe this is a great product that you're offering, how will methanol be integrated, how will it work with upgraded turbos, please give us a better picture. Thanks !

From the N54/N55 crowd as the concept here for the M5/M6 is the same as Backend flash + JB4 is probably the most popular setup for those engines (http://www.e90post.com/forums/showpo...47&postcount=2)

Backend flash is a flash that runs in conjunction with the JB4 taking over functions such as air/fuel/timing (these functions are normally handled by the stock flash with some intervention from the JB4 to a small degree) while JB4 serves as the primary point for boost control. With a JB4 alone you are limited to running the stock DME flash which can limit power (though JB4 alone is still a big step up from 100% stock). You will be limited to about E30 or so with the stock DME fuel scalars and timing will be low for an ethanol tune so you will be giving up some power.

The backend flash has altered fuel scalars for Ethanol tunes if you run the race/E85 flash. Timing is increased in those flashes as well. AFR is leaner to make more power. There are also other changes like VANOS, etc that help make a smoother more powerful tune. If you want to switch from a 91 octane tune to E40 you will need to change the flash, but that can be as quick as 2 minutes depending on what you use to flash it.

So like Tom said, it modifies the stock flash to make things more favorable for the JB4 so the JB4 can produce more power or allow you to run alternative fueling setups.

Currently the N54/N55 guys have unlocked OBDII flashing for their DMEs so there's a ton of backend flash maps for various fueling setups, meth setups, etc. So one can choose a flash based on their setup and load it in and it'll help their JB4 make even more power or even modify the flash to suit their specific needs. Eventually that'll be where my fellow M5/M6 owners would want to be to help fully unlock the full power potential of these S63TU beasts.

Backend flashes also have the added benefit of deleting the cats for catless DPs, etc and are typically nowhere near as expensive as a full tune.

[johntomferg]

...and are typically nowhere near as expensive as a full tune.

So what is the price?

I like the idea of removing the speed limiter though I have never hit it - it is the principal of the thing.

[tom @ eas]

Originally Posted by johntomferg

So what is the price?

I like the idea of removing the speed limiter though I have never hit it - it is the principal of the thing.

We cannot discuss pricing in this thread, but pricing can be found on our website and vendor's section of the forum. I'll send a PM as well.