Happy new year (without crisis and full of health).
Please tell me all the reasons that making an engine knocks(13b) ,i know the bad petrol and bad program others please?I have pfc,t04s,upgrade fuel pump,intercooler,radiator,evc boost contoller,spark plugs,feed big throttle body and maybe ported(i bought the car for parts from Japan made by Feed).When the car gets 4500 rpm and 0.5 bar press the knock sensor reach instantly 136 and i hear a 'tak ' that time then goes on until 8000 without problem. I check ignition coils as says the manual and they were o.k so the spark plags,the sparks were new but i'm afraid if it's o.k now.

thanks a lot,
Anestis

 

what ecu are you running?

 

get a Datalogit and post your PFC map

 

+1

 

knock is caused by preignition of the fuel.

too low octane(or bad gas), spark plugs not cold enough, timing off, IAT too high, lean fuel mixture. all causes of knock.