Because I'm just a newbie, I'm having try and error everyday.

Of course, merline.oz's tuning guide is my bible.

Now I'm trying to tune the ignition timing table to eliminate high level knocks(220-240 load, 2500-3000 rpm) when WOT.

As merline.oz says, it disappeared by subtracting 6 from the area of the timing table.

But it changed AFR. I found logged AFR goes leaner/richer side when I raise/lower values of the ignition table. Changing Boost level affects, too. I think the fuel/timing/boost tables affects together. very interesting but difficult to tune these tables for me.

So, I want to try the similar setting as merline.oz shows in his guide, I have to know the addresses of lean spool tables(He shows us 2 samples of fine tuned fuel tables for lean spool on condition).

Though I searched the tables, but only one I could guess(I don't know if it is right at all):
<table name="Lean Spool AFR Mapping" address="55808" category="Fuel Lean Spool" type="2D" swapxy="true" level="1" scaling="AFR">
<table name="Base FuelMap AFR" address="60e7e" type="Y Axis" elements="7" scaling="AFR16"/>
</table>

If anyone know the addresses of the tables for 52360018, could you tell it to me? Thank you.

#Thanks to every offer from many countries governments for Japan.
#We Japanese sincerely thank to you.

 

Turn off lean spool and never look back. The 08 USDM GSR's don't have lean spool. You cannot turn it on. I don't know about the JDM ones, but a quick glance at an '08 JDM rom says they don't have it either.

As for your Timing / AFR issues, try making your AFR tables more flat. Changing your timing is probably changing your load, which moves you into different cells.

What MIVEC are you trying to pull that RPM range?

 

I've been learning this all via "newbie trial-and-error" approach as well!


If I may try to explain one important lesson I've recently learned...

This is about the two main "Lean Spool" configuration settings:

(1) The table: LeanSpool AFR v FuelMap AFR (perhaps also known as Lean Spool AFR Mapping)
(2) The ECU periphery bit: Disable LEAN SPOOL function


My advice: If you're trying to tune your AFRs, you really need to switch off the whole "dynamic AFR adjustment" functionality via (2) above. In my own tuning/testing, I found it was not sufficient to only change the table (1).


If you intend to tune AFRs, switch off the ENTIRE Lean Spool mechanism - don't just "dial back" the Lean Spool AFR mapping table.


In an extreme example, even with the following "one to one" mapping table...



...I still had wildly inconsistent AFRs from one situation to the next when I had left the periphery bit ON. Wideband readings were not consistent enough to tune from - not by a long shot.

It seems that when that Lean Spool bit is set to 1, the ECU has a green light to be quite creative with the mixtures... and there's more going on behind the scenes than just a timer-based AFR adjustment table.

Only by switching Lean Spool off completely via (2) did I get "tunable" mixtures.

So yeah... listen to Golden!

Rich

 

Thank you info, Golden.

If '08 USDM & JDM don't have lean spool function, We '08 users have to tune the tables without it. I understood.

>What MIVEC are you trying to pull that RPM range?
ok, I plan to tune as below:

1. use psi based boost control.(it works fine. more correct boost level and less over boost. thank you!)
2. don't use target boost error correction(zero out) to avoid over boost.
3. set peak boost level to 25.2-25.5 psi around 3000-3500 rpm, WOT.
4. set the fuel table values of 12.5-12.0 for spooling, 11.9-11.7 for peak boost, 11.6-11.3 up to 7000 rpm, and richer up to 8000 rpm.
5. referring GST's nice thread, I set intake and exhaust mivec maps(I modified the intake map(1500-2500 rpm) a little lower than GST's base map for stock pill): https://www.evolutionm.net/forums/ev...advantage.html


>As for your Timing / AFR issues, try making your AFR tables more flat. >Changing your timing is probably changing your load, which moves you into different cells.
Thanks Golden. Thanks to your info, I could be aware of the relation between timing and load. And I agree with your advice for fuel tables 100%. will try my fuel tables to be more flat.
Now I have 2 problems : (1) Subtracting -6 is too retarded to get nice tuned timing tables. So, avoiding real knocks, I have to advance it as possible as I can. I'll have test and error. (2)I think it's necessary to "cool the chambers by fuel"(I don't know what to say in English) for high load areas, but I don't know how much fuel is appropriate. Should I drill my ex-manifold(or down pipe) and install a exhaust temp sensor to know that? I'll show my poor tuned maps.

 

richardjh,

Hello.

>My advice: If you're trying to tune your AFRs, you really need to switch off the whole "dynamic AFR adjustment" functionality via (2) above.

Thanks to explain about lean spool difiiculty and advices to tune AFR. Referring to your advice, and Golden says '08USDM/JDM don't have this function, I decided to forget it.

I just remembered one more thing to tune AFR. the calibration fuel map(or injector compensation pulsewidth adder). It seems to affect to AFR. But I'm not sure whether it affects always or under some conditions.(ex. when high map or load, etc.)

Tables needed to adjust to get nice AFR are more than I thought.

 

Golden,
>What MIVEC are you trying to pull that RPM range?
sorry for delaying to post pics of my mivec tables. now I can't think about anything other than people in the disaster area and serious nuclear problems of ***ushima.

 

To be honest, it doesn't sound like you fully understand the dynamics of what you're trying to tune. It would be a lot more cost efficient to just pay for a good tune rather that blow your motor trying to learn how to tune.

You need to do data logging and have gauges to really tune properly and it is a long drawn out process. I wouldn't waste money on an EGT personally, a good wideband 02 will tell you the same thing but more accurately and faster which could save your block if things start to go downhill. Wideband/Boost/Fuel Pressure would be my gauge recommendations. If you're trying to tune it without a wideband...it's a recipe for disaster.

 

Golden,

Sorry for long delay. Though still now the problem of the nuclear plants and the damages of the vast area are very serious, I want to switch my mind to more positive feelings.

>What MIVEC are you trying to pull that RPM range?
Here are part of my in/ex mivec maps including wot area. These maps are based on GST contributed mivec maps. Million thanks to GST.

>As for your Timing / AFR issues, try making your AFR tables more flat.
Certainly. I'm trying it now. Thanks to good advice.

in(wot area)


ex(wot area)

 

SilverEvoX,

Hello. Sorry for long delay.

>To be honest, it doesn't sound like you fully understand the dynamics of what you're trying to tune.
Definitely. I have not learned much about the elements of tuning yet. still very little. I must proceed slowly and carefully. Thank you.

>Wideband/Boost/Fuel Pressure would be my gauge recommendations.
I don't have fuel pressure gauges yet. It can tell engine oil conditions. I wish to install it. Thanks to the recommendations.

 

Is is possible to disable lean spool on a 2011 usdm gsr?

 

Yes. ECU Options Set #3 - Bit 0.

 

nvm, got it. thanks

 

toggle to change

 

Does anyone have GST's map in rom format? I love how the map looks, but I'd hate to type all those cells in to test it out.

 

There are several versions of GST's awesome mivec maps. Do you need which version and for which vehicle? I have a ROM which I inputted from his thread "Mivec advantage?" by myself for 2008+ EvoX GSR for stock pill. PM me if you need it.