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Rb26/apexi Dj - Detonation On Decelaration

im late

By im late,
in Engines & Forced Induction

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im late Proficient

im late

Posted
Posted

Hey All,

RB26

Apexi D Jetro

Greddy Type R Atmo BOV

My tuner has set the threshold limit to 60 knocks on my Power FC.

He also enabled the warning light to flash on the dash when it goes over 60 knocks.

Since he has enabled that I noticed that sometimes, I will get knocking the instant I back off rather than when I accelerate.

Also sometimes I will get some knocking when I am crusing at 100kph in 5th (for example).

Are the knocks sensors picking up something else?? Has anyone else had this situation before??

Any feedback is appreciated. :P

paulr33 Grand Master

paulr33

Posted
Posted

the knock sensors are microphones attached to the block, so they are suseptable to picking up other mechanical noise etc

its unlikely for the engine to detonate when you back off the throttle as the engine isnt on any load, thus its unlikely to detonate

its probably clutch plate noise, flywheel noise etc and thats triggering the knock warning or knock increase

by the way, you can't configure the knock sensors, you can only adjust the level at which the engine check light flashes

so by saying "My tuner has set the threshold limit to 60 knocks on my Power FC" this means nothing and is not possible

cruising at 100km/h in 5th gear its possible to knock, as long as the engine is on some load, ie throttle body is partially open etc

cos then the engine is under some load, so its just an area on your IGN map that is either too advanced, or too lean etc

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