bit of background info

i have done a fair bit of tuning and are pretty competant in tuning using microtech and links tuning software.
i am really loving tunerstudios advanced feature set.i have just built up my first ms3 and ms3x combo.also bought the knock module and egt 2channel amp.did originally use a tc-4 amp but that is not compatable.
i build engines for fun/side job and lots of custom car stuff.
this is a great ecu.bang for buck un-rivaled.im trying to intergrate alot of subsystems i used to run seperatly so logging under the one software should return great benifits.

i am configuring software currently, couple things i do not fully grasp.

1. VE table?how come this is not kpa or in/hg & psi over rpm?the table numbers obviously dont represent ms inj open time.so how do i get a rough idea of values from other tunes i have done? normally i can work out from inj sizes and guesstimate rough ms numbers

2. setting up inj dead times.i have 1000cc primarys.i have almost read every page of the manual online.when i am in appropriate screen the curve also uses % rather then a ms value over Volts

sorry if post doesnt make much sense as i know what i am trying to achieve just struggling to enter in tunerstudio.some of these areas which are quite simple in the link software seem very random in tunerstudio.

sorry for spelling also

 

VE (Volumetric efficiency) tuning is great - The car runs better and will certainly get better economy over injection time.
How it works-
The ECU needs the following information:
Injector size
Injector dead time
Engine size
MAP sensor
Air temp sensor.
NOTICE NO OXYGEN SENSOR INPUT REQUIRED for this tuning method.

What it does:
The ECU looks at the injector size to know how much fuel can flow through the injector (in a perfect world)
It looks at the injector dead time. The injector dead time is the amount of time it takes to physically open the injector. If the ECU knows this dead time it knows the "actual injection time"
Engine size (Eg. 3000cc, 3L )
MAP sensor input - To measure manifold pressure
Air temp - the temp of the air will change its density, "allowing" it to carry more or less oxygen.

The final piece of the puzzle THAT NEEDS TO BE TUNED is the VE map (main fuel map). I will talk about a turbo car in this example.
Because we know about 4 stroke engines we know that they idle around 50% efficiency and flat out are around 90-105% efficiency. This makes it easy to make a base map. Around idle 50% (up and down the WHOLE column) flat out 100%. then linearise left to right on the screen (picture below)
Start the engine and see how it runs and revs.


this was stolen from another forum. :P

 

It is in kPa if you select Speed Density as your load algorithm.

Yes it does... You just set it to the value that works. You set the base time at 14v, then set everything else as a percentage of that. The idea being that this will translate better between more different kinds of injectors.

Ken

 

ok so the numbers in the ve table represent % of VE?
config is setup using speed density.so does that mean the axis with fuel load % represents kpa?as i am trying to build a fuel map up to 18psi.

oops just looked at inj dead time screen again and seen under ms3x paramaters there is dead time at 13.2v ms value.i was getting confused as my inj have a deadtime values from 8v through 16v.thought i needed to enter each ms value

as we run staged inj.do i set up deadtimes for individual rather then same and do them in pairs.eg inj A,B with there same dead time then inj C,D with there values for secondarys?

when i get the software up and running i already have 3x customers who are intested in going to ms3x combo as it is great value and has equvilant outputs as the link storm which is double the price.so my shop car is the demo car.this ecu is replacing a lt10s.was sick of the shockingly bad logging and also not being able to configure outputs up other then how they came from factory.lead to a very limited ecu other then squirting fuel and ignition

just for intrest this is going into a s4 rx7 running 13bre with BW S360 with water inj.looking for 400-450rwhp

thanks for help .
also will the manual be available for purchase individually as i hear it is being offered with the pro?always nice to have a hard copy

 

also i cannot seem to find the rx8 mode for coil on plug.running tuner studio 2.0.6 and firmware 1.1.2
under ignition settings -rotary settings.i only have FC & FD settings.i am running aem 1gn-1a coils and want to run sequential ignition.
cheers again.there will be more questions as i stumble upon them

 

Yes.

Correct.

You can leave them alone if you want. In order to properly set them you need a way to vary voltage and a way to measure actual deadtime (injector spraying into a graduated cylinder for example).

Or you can leave them alone and set them if you have a problem that causes you to need to set them.

It depends on your secondaries. If they're the same as the primaries you don't need to set that all up. If they're not the same, then whether you set them up different is up to you. The engine will probably run better if you can set up the dead times properly but I've never bothered to get it dead-on accurate and I've not had a problem. The main places this makes a difference is at really low load and transitioning on/off fuel cut, etc... At most other places in the car's operation it doesn't make much difference in my experience.

Good to know. We are still adding features every day too.

I don't know what's going on with that. You'll have to ask DIYAutoTune.

Ken

 

The RX8 mode option is no longer there.

I can't remember exactly what version we did this in, but we took that out.

So if you want to run COP similarly to an rx8, set up the "stroke" for Rotary, number of cyls/rotors should be set to 2, number of injectors should be set to 2 (for the primaries, secondaries are handled by the staging code), and instead of setting wasted spark for the number of coils, set Coil on Plug. That will give you the behavior you're looking for.

Ken

 

thanks for taking the time to answer.cool as then i had set it up as cop but read in mega manual that cop function was called rx8 mode.i had forgotten i had already set that up under basic settings.

will get back to this thread when i stumble upon any other questions.great community

 

Fuel Load is almost kPa, with one difference of not having negatives.

So,
-100 kPa is 0 fuel load is -29.5 inHg

0 kPa is 100 fuel load is 0 PSI

+100 kPa is 200 fuel load is 14 PSI

+150 kPa is 250 fuel load is 21.7 PSI (standard ms3 MAP max readable)

 

I'm trying to figure out which ecu I want. Does it support the RX8 trigger wheel setup or has that been also removed. I downloaded the program but don't have a map to check out it's features.

 

The "RX8" mode of operation is still supported in ms3, but it is no longer called "RX8 mode."

For the RX8, you'd want to use the "36-2-2-2" wheel, with rotary stroke (instead of 2 or 4 stroke) and COP for the ignition outputs. That will get you exactly what is needed for the Renesis engine.

Ken

 

kpa values are absolute. 100kpa=atmosphere at sea level.