You are correct on all 3.....NICE CATCH ! !

Remember though....the values in the Data blocks are what really matters. The X axis is more of just a scale for the most part.

Never-the-less, the more accurate we are the better. Heck, we all can miss things here and there.

 

what AFR do you have on spool-up and down to the redline with LS disabled?

I`m thinking about making a flat 11,6 after spoolup and enable LS with ~0,6-0,8 leaning in LSmapping table...

 

Low 12s tapering to mid 11s by about 12 psi on 91 octane.

With lean spool enabled, it turns it into high 12s tapering to high 11s as boost comes on then as the effects of "lean spool" wear off, it tapers down to low 11s.

 

^ is the lean spool guru.

 

Very kind to say, however I've just fiddled with it a bit, I wouldn't call myself a guru.

I may have different goals then what others may want to use it for. I just want 1st and 2nd gear to hit hard and be crisp without causing tuning issues in 3rd and 4th.

 

Same here. I would like to see stable mid 11 after spool up and all the way to redline on 3rd and 4th gear, but also get a benefit from mid to low 12 on 1st and 2nd.

You can see what I have with LS disabled (93 octane US). The car feels peppy enough, but i would like to try tuning LS myself too. Thinking about this LS AFR mapping:

14.7 13.06 11.76 10.69 09.80 9.04 8.40
14.7 13.06 12.54 11.47 10.57 9.85 9.17

...or even milder.

Have you tried to tune trailing time tables?

Could you recomend any other base settings to start with?

 

I was asked in the poll thread what my LS AFR table was.

base AFR: 14.7, 13.1, 12.5, 12.0, 11.5, 11.0, 10.0
LS AFR: 14.7, 13.0, 12.7, 12.3, 11.8, 11.5, 10.5

As you can see, the range of base AFR has been reduced to what is in the 3D map, which effectively gives you more cells th target the LS AFR that you/I want, ie mid/low 12's.

I am in complete aggrement with 03whitegsr's and Mattjin's comments on this.

 

LOGIC,do you have the tables for 96530006 please?

 

I posted them back at post #40 of this thread.

 

thanks alot

 

Good read!

Sorry for bringing this thread back. Although it has some great information on this "feature"

I have two questions though. In the first post Paul says if you have tuned you car with lean spool disabled and then try to enable lean spool then you will cause overly lean conditions and cause damage. This makes sense to me. You tune the "lean spool" into your AFR map instead of using the ECU feature to apply "artificial" changes.

Then 03whitegsr says to tune with lean spool disabled, then enable it and adjust accordingly? So would I go about tuning a very conservative fuel map and then enable lean spool to prevent overly lean conditions?

This two statements seem contradicting to me...

Second question: I dont seem to have the tables defined in my XML for EcuFlash but I see that Paul has posted the definitions. Later on it was discovered that 3 of the RPM addresses where defined incorrectly? Was the original post fixed? There is no edit date in it so I assumed not...

Thanks for any help,

-Ethan

 

Depending on which ROM you are using, some of the lean spool tables are better defined. I personally have tried tuning both ways. I have come to the firm conclusion that lean spool off is better and more consistent.

 

Hmm.. Well im using the same rom ID that Paul has defined the tables for. 94170015

It seems that most people are having better luck with disabling lean spool as you said. But it does seem like a nice safety feature? Especially for a daily driver

 

I don't disagree with the safety aspect but if you tune conservatively in the first place and do not disable boost cut and keep your low octane tables intact (some tuners make the low and high tables the same), you will have plenty of safety.

 

You will read in the earlier posts that lean spool was a bad idea; this is because we didn't have all the addresses to all the lean spool tables and didn't fully understand the system. Now that we do, lean spool is an animal we can tame and use to our advantage!

The question is: If all else remains the same, if you change your lean spool AFR mapping to this:

BASE: 14.7 13.1 11.8 10.7 9.8 9.0 8.4
L S : 14.7 13.1 11.8 10.7 9.8 9.0 8.4

Would this effectively disable lean spool ?

I believe the answer to this is YES. and that is a good thing!

I would keep lean spool enabled and set the table to map 1:1 as above (effectively disabling lean spool). Once your tune was dialed in, you can start leaning out the mapping just a few tenths of a point at a time, giving you a table like merlin.oz.

I think most folks gripes with LS come from the fact the the mapping is too aggressive. But a mild lean spool table can give you the best of both worlds. tune with the table 1:1 for greater consistency, then slowly enable LS with the table to get nice part throttle crispy response on your DD.