Running Lean in bottom end!

So I had problems with dhp, sold it and bought hpt, loving it so far.

Car is a 2000 Impala LS, with a ZZP tuned PCM.

Mods: headers, cat-back, CAI, HV3, Ported TB from a 97/98 GP (smaller MAF)....that's about all I can think of on there at the moment.


Anyways normal cruising, my o2 readings are bouncing from 920's all the way down to under 100. LTFT's are super positive. These numbers are fine top end. WOT is fine. And I don't have any KR whatsoever.

I'm trying to figure out why I am running so lean and how to go about fixing it. Suggestions? Attachment 39724

There is a scan file attached, if needed I can also attach the actual tune file. The only thing I have done so far was smooth out the MAF curve a bit, but it doesn't seem to have made much of a difference.


EDIT: Also I am not touching the top end yet (waiting on getting a wideband in there)

Nevermind, got it figured out. This was actually an incredibly easy fix. Got LTFT's down from 13's to about +4, so little more tweaking and it shall be done.

Still not sure why my o2 readings are bouncing all over though.

They're supposed to at cruise.

Ahhh, that explains it. Thanks

Nevermind.


Answered my own question, found what I was looking for..doh!