O2 sensor + Headers ?'s

[samh_08]

Hey guys Im pretty new here. I've been reading into o2 sensor switching points being affected by having long tube headers. I was wondering if for 1.) I am even asking a 'sane' question and for 2.) What kind of condition would this cause? (false rich or lean condtion)

Please help me out, Thanks!

[mr.prick]

1. There's nothing wrong with your question,
the O2's switching makes a difference on AFR.

2. I increased the values in the idle areas to richen the idle
and decreased the WOT areas to lean out a bit of over fueling.
I ended up with a flatline of 500.00

Keep in mind my LTFT's are -5% and my MAF has been rescaled.

[samh_08]

Well I just swapped an 05 LQ4 into a 86 monte. I never knew what stock trims were and went straight to head/cam long tubes. It now shows that im -18% LTFT pretty much anywhere. I was just wondering if my o2 sensors location where giving me a false reading.

Any input in appreciated, thanks.