SSMinneapolis

i have done a bit of research on tuning and the basic target numbers. so far from the logging that i have done i have gottan the following:

ltrims: 2-10 (positive)
O2: 700-750 (highest values)
KR*: 2-9*

and my timing table is FUBAR. the transition are not smooth from cell to cell as they are supposed to be.

from what i have learned...the ltrims are supposed to be slightly negative normal driving and 0 at WOT. the O2's are supposed to be 8XX-900 and KR is a BAD thing.

from the little tuning that i have done i was able to get the ltrims down, but they are still all over the place. right were i want them to be in some cells and still +2-4 in others (mostly underload and higher rpm).

any advice on getting specific sections of the ltrims down or up?

vehicle is a 2003 silverado SS. with volant, exhaust, efans, 160* stat, MSD wires, NGK plugs (shift kit, servos and TB stall going on this weekend)

zippy

very interesting numbers. a touch lean....... might be most of your kr problem.

SSMinneapolis

isn't that a LOT lean?

383838

iTrader: (1)

Unless you've touched the MAF (like ported it or took the screen out) you most likely have an intake leak or the tune it just wrong.

SSMinneapolis

no leaks. everything has been checked, twice. and the MAF is stock as can be. i am going to go back to the stock tune and start making changes from there. thankfully someone was able to get me the stock .bin file.

Magic Chicken

iTrader: (1)

you could try richening up those cells which you are lean in in the VE table.

SSMinneapolis

i got most of it richened up. i modified the IFR table. i am going to start messing with the VE table this week. i wanted to try it from a few different angles just to learn a bit more about everything and how it reacts to changes.

i haven't had a problem since i loaded the stock tune back in and tuned from that. no matter what i did to the mail order tune i got, i couldn't get it to where it was supposed to be.