When I did my log humidity was @ 60%. I have discovered that high humidity lowers boost. One time I logged with 80-90% humidity and lost 1.5 psi of boost. I thought I had a boost leak. Then I logged the next day when humidity was in the 40s and regained the lost boost.

Had I been logging my 9 under sub 40% humidity, I would have logged the 20.xx stock boost.

 

A lil harder then that. You have to change the addresses of the maps, then change the settings.

 

No, here is a quick and dirty way to add control of it, in ecuflash, right-click on the left column under Fuel and select "new map" and follow this screenshot:

 

Read this post:

https://www.evolutionm.net/forums/sh...57#post4364757

If you want to see lean spool start/stop values, go into your 88590015.xml file, and add these items:

<table name="Lean Spool Start RPM" address="1281"/>

<table name="Lean Spool Stop RPM" address="1285"/>


Then go into your evo9base.xml file, and add these items:

<table name="Lean Spool Start RPM" category="Turbo" type="1D" scaling="RPMStatLimit8"/>

<table name="Lean Spool Stop RPM" category="Turbo" type="1D" scaling="RPMStatLimit8"/>

There is another thread on lean spool that is worth reading:

https://www.evolutionm.net/forums/sh...d.php?t=273119

 

I installed two bungs on my HFC. One for the stock narrow band at the tail of the HFC and one for the wideband on the mouth of the HFC. Today I logged the AFR. Boy is this car running rich stock. This is richer than my 8 was, but I only logged my 8 with a TBE. I never logged it stock. Here are the 4 logs averaged. I suspect that the knock that I was getting up top is due to running rich. You can knock when you run rich.



The car is below 11 starting @ 4000 rpm What the hell was thinking tuning the car like this.

 

I've seen 8's run richer than that.

 

They were thinking of a way to allow conumer joe to run 89 octane and use timing retard to control knock threashold. Totally impossible with a car tuned with a a powerful AFR and with even less than optimal timing. I bet Car is about 65% undertuned from factory

How in the hell did Razorlab figure that method of LS dis?

 

Does your wideband AFR data represent a completely stock ROM (no mods to lean spool, AFR map or anything else)?

 

Yes. I only have the 2byte load and JDM MAP sensor patch.

 

Interesting. Seems that with lean spool enabled, the actual AFR runs about 1 point richer than the AFR in the fuel table. Would be interesting to see how close actual AFR is to the AFR table when lean spool is disabled.

 

My before and after log files showed a little more than 1 point richer after where it steadily declined to nothing where it stopped at end of spool . For that log it was from 3500RPM to 4100 rpm . Not sure if it's RPM related or spool (VE, TPS, MAF open/closed loop) related, or both - for I changed the fuel map shortly after

 

Say what?

 

Yeah, that took me a few minutes too. He's wondering how you came up with that method to disable lean spool.

 

I've seen it done like that some where else on here, because thats how I hard it at first on my ROM. Then I changed it to the way the how-to says to do.

 

I just want clarification that the method that you outlined has nothing to do with the lean spool enable/disable. Correct. The intent of this method is to control the extremely rich AFR that the Evo 9 encounters past 7000 rpm. Is that correct?