Originally Posted by
IH8TOADS
Yeah most tuners zero the table out but like I said it's there for a reason. Ford engineers calibrated the Boarderline knock table for lambda 1 and this table does a correction based on fuelling as an engine is more spark tolerant at richer AFR's and vise versa.
Therefore the afr correction table makes zero correction at lambda 1 when steady cruising. At light load and low RPM the the correction table is normally removing timing and at high rpm high load it's adding timing.
So if you zero this table out and use the boarderline knock table as your base spark table will need to remove timing at low load and rpm otherwise you're faced with too much timing as the transition to WOT is slow and it will set the knock sensors off prematurely regardless of whether you have re-calibrated your knock sensor/s.
I can't see how it's a trap, you can see the table, you know the correction it will make and when so you just keep this in mind when calibrating the boarderline knock table!