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Hi , running apexi fc with z32 afm's on r33 gtr and when accelarating (1 bar boost to max revs) car only reads max 25 on knock, but whaen cruising now and again hiccup's around 3k revs and reads 100-110 knock? any ideas?
 

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Ignitor, coil maybe? If I remember correctly, the FC has to be changed for those mafs? Its been a while since I messed with that stuff. Or a bad MAF?
 
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