General What are Fuel trims

[notractiongst]

Could someone pelase explain to me what fuel trims are (Long term and short term) and what #s i should be tunning for?

 

[dakmon]

Go to http://hywell.org/plhelp/data.html choose fuel trim.

Hope this helps.

 

[notractiongst]

So could you explain to me why the hell im gfetting 19 degrees advance at 6600 RPM but my LTFT is -4% and and my STFT is - % , i dont understand