General Help with fuel trims

[90AWDTalon]

I need help adjusting my fuel trims.
low = 82%
mid = 87%
hig = 81%
o2 = 100%

This means I'm super rich, right? Makes sense because I have walbro 255 low pressure. But what doesn't make sense is when trying to adjust the low trim with my maf translator, cant get my low to change. The only thing that happens is the more fuel I take away the lower my idle gets. I took it all the way to setting C, or maybe B, and I had to dial my BISS almost all the way out to get it to idle at 750 rpm's. The low didn't move from 82%, and the o2 stayed at 100%. 100% for the o2 means its not trying to adjust the trims, right?

Any ideas or suggestions? Any one else have this problem?

 

[90AWDTalon]

I just adjusted my mid 2 clicks leaner, and my low trim went to 109%.

Anyone have any idea's on whats going on hear?

 

[kpt4321]

What's going on "hear" is you are adjusting you MAFT.

When you lean out the MAFT, the ECU needs to adjust the amount of fuel it injects in order to achieve the proper A/F ratio. The leaner the MAFT tells the ECU to go, the more fuel the ECU has to add, thus the greater the fuel trim will be.


....Kyle T.

 

[90AWDTalon]

I ment why did the mid on the Maf adjust the low trim, and the low on the Maf did nothing.