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S-AFCII+Logger+WBO2 tuning question...

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drive-maniac

15+ Year Contributor
54
1
Jun 6, 2008
Varna, Europe
It looks that I am doing something wrong.
I have just rebuilt my motor with Wiseco and Eagle H-b, put 660's on it, Walbro 255 + fuel reg., 2G MAF. I also have a WBo2, SAFCII and a datalogger with MMCD program.
So after going thru all the "tuning threads" in the forum I decided to start the actual tuning on my car.

I put -10% all across the board on the S-AFCII ( -30% for the injectors, +20% for the 2G MAF).
I let the car to warm up. Seems to work good at idle.
And here is the issue - I started looking at the fuel trims for the next Ne points of the SAFC. The logger shows nothing different than 100%, never changes?!?!
Is it supposed to be like that?

Decided to cruise around. As soon as take off, car strarts running like crap, detonation comes up and car dies. Checked the logger - knock suddenly went to 35!!!!!!
Never went more than 2000-2500 rpm.

So my question is how do I tune when the fuel trims don't update? Is that normal?

Don't know where to start from....

My boost is set to stock for the moment, 1G GSX car.

I will appreciate any help guys, since there are not many DSM's here, where I am coming from, so does people who know something about them!

Thanks in advance!
 
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