Originally Posted by
1leg
Questions
Going down in the VE cell = leaner RIGHT? Yes
How much would you change if you had 119 BLM in a cell and the cell has 19.50 in it?(just want to see how much i can change in one step) Calculated value should be 18.12, I would go with somewhere around 18.25 and sneak up on the right number
Would a heated O2 sensor be better? this truck has a custom exhaust system O2 sensor is in the stock location in the merge collector but moved about 6-12" away from the engine compared to were it was before, I also have shorty headers. Anytime you add headers always go with a heated O2, just my thinking though.
Would it be better to move the O2 into one of single down pipes? I think really only if you put a bung in both and then check the other bank after you think the tune is satisfactory
Should the O2 stay consistent when at cruse speeds? My o2 voltage will drop suddenly from above 400 then go to 50 or 60 even with the steady 2500-2800 rpm. As long as it is moving across stoich that is good. A reading of .050 could just be timing of the data point picking up the extreme peak of the swing, I like to watch the O2 cross counts and make sure they accumulate quickly.
Thanks everyone for the help. Its great to see the changes making improvements. finally heading in the right direction.:jfj: