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Old 06-29-2009, 10:29 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
Sublime_06 Offline
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From: Winnipeg, Manitoba, Canada
Registered: Oct 2006
Tech Posts: 82
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2G-specific Getting fuel trims dialed in with safc/logger..

Okay I got an SAFC-1 and a pocketlogger and I am trying to go ahead and get my fuel trims zero'd out. The only problems is I am not sure if I am going about it properly. I will give you guys idea of how I am doing it and you can corrent me if I am wrong.

I have read a lot of threads and I am still unclear.. I read the definitive piggy back guide to tuning to please dont waste your time posting a link to it.

I understand how to go about setting up the high/low throttle points, the ne points, ect...

From what I gathered reading through a few threads, I am supposed to free rev to the specific rpms as defined in the SAFC. So for example, the 1000rpm point I rev the car to 1000rpm hold it there and watch the ltft and the stft. When I did this for the first time my long term fuel trim was +12% and the stft was around +5%.. So to zero out my trims am I supposed to increase fuel on that specific rmp point until the STFT reads -12%?.. or 0?.. or what? And then repeat for all the other rpm points up to 4k, and then carry that 4k percentage onto the last few ne points?

Thanks guys for any input. Sorry to ask a question thats been asked a few times over.

Cheers,
Chris.

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