mrmint69

Little history to start. Had the car tuned and ran datalog after logging a few miles. My BLM's looked pretty good and the tuner said there was no reason for any more adjustments. My cells looked pretty good with 16 (idle) & 18 (start-up, at higher loads) being real lean and all the rest were real good. I have been driving the car for a while and adjusted the rockers and changed the spark plugs. Now my cells 1,2,9,14,16,17 & 18 are the darkest green meaning real lean and cells 3,5 & 6 are lean but between ideal & real lean. My fuel pressure looks fine and it idles with more vibration than usual. What would you recommend i do?

WS6T3RROR

Look for a vacuum or air leak in the tube behind the maf. Likely have unmetered air coming in somewhere.

By real lean what kind of blm numbers are you getting?

mrmint69

Cell 18 Statistics: Hit Count = 75
Maximums: LBLM 147 RBLM 143
Minimums: LBLM 147 RBLM 143
Averages: LBLM 147.0 RBLM 143.0

Cell 17 Statistics: Hit Count = 297
Maximums: LBLM 144 RBLM 140
Minimums: LBLM 141 RBLM 134
Averages: LBLM 141.3 RBLM 134.3

Cell 6 Statistics: Hit Count = 82
Maximums: LBLM 144 RBLM 140
Minimums: LBLM 134 RBLM 131
Averages: LBLM 134.2 RBLM 131.2

Cell 2 Statistics: Hit Count = 140
Maximums: LBLM 142 RBLM 143
Minimums: LBLM 136 RBLM 140
Averages: LBLM 141.3 RBLM 142.4

Cell 15 Statistics: Hit Count = 200
Maximums: LBLM 137 RBLM 133
Minimums: LBLM 128 RBLM 128
Averages: LBLM 128.1 RBLM 128.0
These are the ones that had the most hits. I will check for leaks after the maf.