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As Much of the information here revolves around the use of Eurodyne Maestro since it was the first end user tuning software available. Eurodyne does change some maps and axis names, but the vast majority of ecu strategies are kept consistent with anything, you make modifications at your own riskthe way Continental designed it. Nobody else An example of where there's a change in the software is responsible for anything that happens the Boss file wastegate duty tables. The factory uses a complex scheme to calculate the exhaust flow vs Boost, while youEurodyne changes this to use a simple RPM vs. Boost level. Examples of the two different tables are on the [[Eurodyne_Tables|Eurodyne Maestro Tables]] page. <strong>THIS WIKI IS A WORK IN PROGRESS</strong>. We went live with it on 9/21/2020, and we're tuning your carworking on getting info in place. === Select a topic from the left nav bar or the links below ===[[High_Level_Overview|High level overview of ECU operation]] [[Boost_Management|Boost Management]]
If the information here has been helpful, consider donating. Domain names and web hosting aren't free. [[Fuel_Management|Fueling Management]]
== High level ecu functionality ==The ecu in any car is designed to control how the engine operates. Car manufacturers want their engines to produce power, while still being fuel efficient, reliable, quiet, etc. The way they accomplish this is by defining "maps" which contain modifiable parameters that the ecu will use to make decisions on how the engine should be working. In the case of the Simos18, there are both measured values and modeled values in these maps. [[Reverse_Engineering_Information|Reverse Engineering]]
=== In short: ===The accelerator pedal tells the ecu how much torque the driver wants the engine to produce.That driver input is referenced against a table that defines the maximum torque available at any given RPM.That target torque value is referenced against other maps which define how much airflow, followed fuel and timing, the ecu should target to achieve the driver request torque value. [[Open_Source_Tuning|Open Source Tuning]]
== Boost management ==The replacement for displacement [[Eurodyne_Tables|Eurodyne Maestro Tables]] is boost. We can achieve impressive power levels an overview of the tables available in small displacement motors by putting turbos on them. We'll assume a working knowledge of forced induction... If you don't already have that, there's plenty of places to look.Eurodyne Maestro
Once the ecu has calculated the amount of torque the driver wants, it'll use that to dictate how much boost it should try and create. The engine will convert the driver request torque value into [[HP_Tuners|HP Tuners]] is an airflow volume. I.e. to make T torque at R rpm we need V volume overview of air. HP Tuners software
Modeled tables=== Helpful Links ===Note: External links will attempt to open in a new tab<br>[https://cobbtuning.atlassian.net/wiki/spaces/PRS/pages/143753246/Volkswagen+MQB+Tuning+Guide Cobb Tuning Volkswagen MQB Tuning Guide]<br>[https://ecutek.atlassian.net/wiki/spaces/SUPPORT/pages/21430325/VW+EA888+Engine+Tuning Ecutek EA888 Tuning Guide]<br>The ecu has no way to calcute actual airflow[https://cobbtuning.atlassian.net/wiki/spaces/PRS/pages/619872308/Volkswagen+MQB+6+Speed+DSG+Tuning+Guide Cobb Tuning 6-Speed DSG Tuning Guide]<br>[https://cobbtuning.atlassian.net/wiki/spaces/PRS/pages/1052606501/Volkswagen+MQB+7+Speed+DSG+Tuning+Guide Cobb Tuning 7-Speed DSG Tuning Guide]<br>[https://www.youtube.com/watch?v=5wQ9lQq2vDQ Maestro MK7 GTI MQB, Basic overview (YouTube video)] <br>[https://www.youtube.com/watch?v=0Yglshxokv4 Understanding AFR and Lambda]<br>[http://www.nefariousmotorsports. Therecom/forum/ Nefmoto] (Not a whole lot that's no MAFsimos specific)<br>[https://s4wiki. what it does have is PUT and MAP sensors com/wiki/Tuning S4 Tuning Wiki] ("PUT" stands for pressure upstream throttle, vs "MAP" which you should already Not Simos - but still can be familiar with.helpful), Baro sensor, temperature sensors, etc<br>[https://docs. If you know the airflow characteristics of the turbo, you can calcute the volume of air that it flows given its output pressuregoogle. So to target V volume of air, the ecu assumes that it should target B boost pressure com/spreadsheets/d/17nKlgeqHBmVnqw4OKaAGOJwZtXGkLNJo1yFMqe5oHck/edit?usp=sharing PID List (PUT set point or PUT_SPwork in progress)]
But there's more involved in choosing a PUT_SP than just modeled airflow tables=== Just saying ===As with anything, you make modifications at your own risk. We also have tables Nobody else is responsible for anything that define the maximum turbo pressure ratio. At certain target airflow volumes and RPMs, we can tell the ecu to limit the PUThappens while you're tuning your car.
And once we've got our PUT_SP, how do we limit the boost? Wastegate duty cycle (or wastegate_sp).
The Simos family of ECUs use electronic wastegate control rather than a traditional boost actuated wastegateIf the information here has been helpful, consider donating. Typically thereDomain names and web hosting aren's a spring that will operate at a fixed boost pressure, and a boost controller will bleed off a certain amount of pressure so the spring operates at a higher boostt free. *Paypal: An electronic wastegate works by having a target position at a certain boost levelwebmaster@simoswiki.com*Bitcoin: 34JVVe9pE7gZJ5Pu1B3rhWCPiV5SWavQL2
== Fueling ==
== Timing ==SIMOS is a registered trademark of CONTINENTAL AUTOMOTIVE GMBH. This site has no affiliation.
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__NOTOC__
<strong>The SimosWiki</strong>
This site is dedicated to tuning the Simos(18) family of ECUs commonly found in the MQB platform of VW/Audi cars.
=== Editing Software ===
Eurodyne Maestro (and HPTuners as of late 2020) are the only software suites that allow for end user modifications to the calibration tables
