Lt1 NA 383 build. Opinions welcome
TECH Resident
Joined: Oct 2006
Posts: 993
Likes: 173
From: Euless, TX
Usually jerking is a sign of either being lean or having too much timing.
When I am idling bank 1 jumps to 25 which is maked out and bank two stays around -1 to -1.2 on ltft. I have read the 411 pcm likes to be as close 0 as possible and anything plus or minus 2 is acceptable. When I get on the highway they both balance out nicely and are only off about .5 at most but at idle and low rpms they are way off. I plan on changing both 02 sensors and the maf and seeing what happens.
I replaced both o2s and the maf. It runs a lot better actually idles much better but the miss is there still. That said the miss is less noticeable. Is it possible that it's an issue with the tune? I have tried reaching out to moe via pm and phone and have not recieved a reply. Not sure if he is on vacation or something.
