between 180 - 220 my car runs very rich at 4000 - 4500 rpm.. I dunno why. I m going to post the log after I upload this map

I run 93 oct. here in FLA. Does Chigaco have 93 ?

 

Yes, I run 93 Octane here in Chicago.

l8r)

 

Do you have Lean Spool Enabled. that could be why you cannot get it to the right AFR on Spool

 

Excellent Write Up A+++++

 

I do... no matter what I have done so far, it goes to 11.5 or something till redline.. this is frustrating.

 

this is OFFICIALLY the bible to tuning Thread

 

Prof, disable your lean spool and see how it reacts. You should see your entire midrange AFR go rich by about a full point.

That 13:1 area is definitely not where you want to be and it doesn't make sense with the 9's in the map. Can you post a screen of the log itself so I can check out the curve? You might be experiencing a little delay in the WB02 reading. That can cause issues during spool up when you are only in a load cell for .3 sec or so.

Yes, pull timing when you see knock. This is the basic approach ...

Set boost to determine load values to tune. If you don't have a base map to use for timing and fuel, increase boost gradually and watch for knock. If knock occurs, look at your timing a fuel ... fuel should be between 10.8 and 11.3 or so while tuning boost to prevent knock. If your fuel is correct then pull timing where the knock occurred.

After boost is tuned, work on the fuel. You desired fuel target is 12:1, which is considered a little lean by most, but is doable with those boost levels and a little reduced timing. While tuning your fuel, watch the timing and pull some if you see knock.

After your fuel curve is dialed in move on to timing. Add a little timing across the rev band until you see knock. Pull out a degree in the areas you see knock and keep adding in the areas that are knock free. When you've set everything pretty much to the edge, pull out a degree or two across the entire rev band.

Also, while tuning fuel and timing, smooth the maps and consider overboost situations. If you are tuning for 220 load, don't ignore the 240 or even 260 cells ... a little overboost could cause some bad problems if those cells are too aggressive.

 

Here is the log corresponding to that map...

 

All I can see is ~5000 to redline ... do you have the full log from 2500 up?

Like I said, try disabling lean spool and this whole thing might make a little more sense.

 

what is lean spool?

 

Im going to upload the stock map and do a full 2000 - 3000 rpm pull and post the log. Im going to do the same with this map I have one.

Im not going to disable leanspool yet, because I dont understand why it throws things off.

 

Prof, I thought you might want to know this ...

I was tuning last night and I've been having a weird lean/rich condition at peak torque much like you have. It would go quite lean and then rich right afterward all between 200 and 280 load at 3000 to 3300 RPM. I had added fuel in the area much like you have to help the issue with no real results.

The problem is delay from the WBO2 signal. The lean spot is actually caused by the spool up area (140 - 220 or so) at 3000 RPM. So, when we add fuel in the are that matches the log we actually don't address the lean spot, we are really causing that rich condition after peak boost is reached.

Try making that block of 9's more in line with the rest of the map and adding a little fuel to the area just before it. It worked for me.

 

post a screenshot
also, why would there be a delay from the WB.. those things are expensive a supposed to work right

STOCK LOG


MOFIDIED LOG AS PER PREVIOUS SCREEN SHOTS

 

There is a slight delay for WBO2 readings, since the exhaust gasses have to work their may out of the combustion chamber through the turbo and through the DP. It's not as noticeable at WOT, but it's still there.

l8r)

 

I see a delay in response between logged channels of about 0.3 seconds for WB.

How to tune an evo:
Minimum advance for best torque.

However, 93 octane or lower makes this difficult