Hi All,
I own an L67 I have CAI, Catless SLP Headers, and recently went up to 3.5 from a 3.4 pulley for the winter.
I am somewhat new to tuning, and I am having a problem getting my LTFT to lock in at 0.
Everytime I make a fuel change and reset my LTFT monitors. After I do a few driving cycles the LTFT starts locking in at 0 or -0.7
A week later that will jump to -1.6 for no reason,
a week later -2.1
a week later -3.1
a week later -3.9
and now -4.6
needless to say my KR is jumping with them. I drive 125 miles a day, and the tempature has been in the 50s the entire time. I did not make any changes during this time period and I noticed this happen two months ago with 3.4 pulley and now happening again with the 3.5 pulley can anyone suggest perhaps maintnance issues that could cause this or other tuning issues.
In general the car runs amazingly and most of the maintenance is good plugs wires oil etc etc