my brother and i are working on his 2.9l whipple equipped lq9 6l.having problems with kr.hoping some one might be able to look at tune and log and offer any advise.checking oil ingestion next.any help would be muchly apreciated.thanks
knock or false knock
my brother and i are working on his 2.9l whipple equipped lq9 6l.having problems with kr.hoping some one might be able to look at tune and log and offer any advise.checking oil ingestion next.any help would be muchly apreciated.thanks
You have a couple of options. If it is genuine knock then you need to reduce your timing tables at those points that knock is occuring. Both your spark tables are the same, so you could make your low octane table lower than the high so that if knock occurs the octane scaler can do its job and pull some spark. If you think it is false knock then you could de-sensitise your knock sensors a bit.
It's all good until it goes "Bang"
My brother logged auto pid and it seams to be when the auto changes
BTW: if you're running a COS, the HI and LO spark tables can be different.
If you suspect oil ingestion (and even if you don not), install a catchcan on the PCV line.
no checked for oil ingestion that seams allright.could the auto give false knock
yes running cos
Right where it knocks, commanded AFR goes rich (11.5) while wideband AFR stays lean (14.5)... this points to your VE not being correct.
Also, the KR waveform has a sawtooth shape which indicates real knock.
Also, check the condition of the knock sensors and subharness.
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