I always like to see below 13 for any loads around 100% so ...... yeah

 

the closed loop load tables work for me

this is the help section from mazdaspeed 3, with very similar tables, this is how they really work, we all know that the rx8 help file is poo

Closed Loop – Max Load A-E
Table Description – These tables are used to adjust if the ECU stays in closed-loop based on calculated engine load values.
A lower value in these tables will cause the ECU to enter into open-loop at lower engine loads. A higher value will create a
delay and will force the car to stay in closed-loop until higher calculated engine load values are achieved. When calculated
engine loads are above these values the car MAY run in closed loop if other conditional parameters are met.

 

I have been finding the mazdaspeed 3/6 atr race, and help file to be very insightful on how mazda does a turbo I4, I know the rotory is different but its been insightful.

 

Seriously ? What else are you changing to make that happen ? I have never been able to get any reaction from adjusting any of the 'CL exit load' maps ?



This .......

 

make the rpm, throttle exit, and load exit work togethor, it seems to me the exit load tables are last looked at, but I don't know for sure, its help with cruising so I don't go into open loop too soon

 

On 2006 models onwards I can't get them to exit CL before 100% load (unless I do it with CL RPM exit) . Earlier models a bit sooner .

There is a table we can't access that is preventing this IMO .

 

With Mazda edit I thought you had all the tables?

 

I do ................ doesn't mean I know what they all do

 

I have an '06 running ATR and CL exit load works for me independent of exit RPM... I keep my exit load at 60% and exit RPM at 6000 for cruise MPG. I use throttle and CL target maps to control boost transition. I'm pretty happy with the results which you can see in the latest graphs I posted up.

 

Can't see that from those logs you posted . Can you post one showing LTFT , STFT , load and rpm so we can see where the exit point is ?

 

Here is an example from an 06 I've been tuning ...............
Note how STFT doesn't flat line till calc load reaches 100% as shown at the blue vertical line .
It should be exiting well before this if the Cl load exit tables were in control !



And here is one from a pre 2006 model showing exit at around 85%:




Are you able to post something similar Slash ?

I have tried every conceivable setting on load and throttle exit maps and can't get anything different from the above so really keen to know how you guys are doing it !

 

I was referring to the boost transition in the graphs. I'll see if I can dig up some cruise logs from when I was testing the exit load, throttle and RPM. Suffice to say a combination of the 3 got my the cruise results I was looking for without getting scary going into boost. Fazda's recommendations for the CL targets gave me the last bit I needed to really smooth out the transition...

 

I'm dealing with turbos that spool faster .... reaching 100% load well before 3000rpm . This is where I want a lower exit load .

 

I actually had to raise the stock exit load because it would go OL at too low of a load and kill my cruise MPG.

 

Log ?

 

I'll have to sift thru and find them...

 

any log that shows accelerating from low rpm should do . Just need stft an load vs rpm .

 

I'll look for my logs too

 

So Brettus as I drifted off to sleep last night I realized you are specifically interested in full throttle scenarios. I am getting results for cruise using the CL exit load, which is why I need to look for those logs specifically. The CL exit load does not appear to work for me for WOT logs, but manipulating the CL fuel targets did work for full throttle to taper down the fuel where otherwise nothing else worked. Sorry to get your hopes up, I misunderstood what you were after. When I find my cruise test logs I will post them up. With the stock exit load the system was going OL in cruise too early and killing MPG, even with the stock exit RPM of 6000 (on '06). Raising the CL exit load to 60% fixed this for me.

 

Yeah , full throttle scenario is what I'm interested in . But interesting that you you have found a situation where those tables actually do something . So maybe by playing we can figure out how to use them in other ways.
First thing that comes to mind is that perhaps the thottle exit tables work in reverse to how you would expect . IE if throttle is OVER the selected value ...... DON'T reference the load table .... Might be worth an experiment.

 

sent you an emal brettus

 

Just had a look . Not the scenario i'm interested in but thanks anyway. I think I need to do some sperimentin.

 

like you said I think those maps are for cruise like conditions, for all my wot logs the best I have seen is 95% load

 

just thinking, on your calc load max, do you have that flatlined 2.00 across all rpm? or slightly above what you see? maybe that is stopping it from going higher at low rpm?

say the car is really 100% load at 2500rpms, but the calc load max is set at 70 or 80% load at 2500rpms so ecu only reports 70-80%

 

I have it set slightly above actual for low rpm then at 2.40 for higher rpm . So no , the max calc load ceiling is not being breached .

Just tried setting CL throttle exit to 100 % and messing with CL load exit as well ..................... zero difference vs having exit throttle at a really low number.

I'm not concerned with my setup at all BTW as 85% is fine as an exit point . It's the 2006 models that are a problem as they don't exit till 100% which can lead to some really high afrs on boost transition from low rpm.