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Revival time!
All summer I have been dealing with this exact same issue. Except my wideband only reads to 18 so I'm not sure how lean I really am at idle. It runs great until warmed up then goes lean on idle and cruising. Boost and normal driving is great. Holds 12.1 at wot.
Things I have done
Checked grounds for z32 maf
Tps voltage at .45
New cts
Fuel pump hotwire
New fuel filter
Timing at 15
Boost leak test held to 25 where I stopped
No vac leaks found with carb cleaner
New bov (synapse dv)
New 02
Any advice would be appreciated. Going to try to get another z32 maf to borrow soon. It's ran through the stock Sr intake pipe.
One thing I have noticed is my maf voltage stays at 1.32v on idle and will randomly drop to 1.08 for a split second then raise back to 1.32.
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