Thread: relocating knock sensor

im going to do this.. about 5inch lower then the original spot. dumb, normal? lmk

why? I used to do this on the qr25de because the ecu could not determin what real knock was and pulled out timing.

i dont have time to take off the intake manifold.. i tryed to take it out the bottom but failed. only way its coming out is from the top. i dont want to be "ghetto" but i really dont have the time.

its hard to get the knock sensor off most fwd nissans. which car is it on? if its on your turbo car most aftermarket ecu tunes delete the knock sensor from the program. So its just there but not working.

no its on my stock de. i tryed to take it out from the bottom and now the bolt does not look too good pretty stripped. it runs like crap without it.. big diffrence

on the stock ecu you need the knock sensor but that does not mean it has to be on the block. get another sensor and attach the harness to it. then use a bolt and washer to run a wire from the knock sensor to a ground point and your set. this is how I did the qr25de to make the ecu think the knock sensor was still on the block when I moved it to prevent timming from getting pulled.

i dont know if its a good idea, but i did it on mine, cause i couldnt get it out

if this is bad thing id like to know too, i dont really care if it works factory wise i just dont want it to pull timing at all

as long as you don't have knock your cool. Even with the knock sensor your stuff can still blow up from detonation.

The ECU "listens" to the knock sensor at the same crank position on every power stroke for each cylinder. There are "sensitivity" tables in the ECU for each cylinder because each cylinder sounds different, based on where the knock sensor is located. Moving it to another place on the block will obviously throw off these sensitivity values, which could make it either do nothing, or hear what it thinks is knock and pull timing all the time. If you take it off and put it in a quiet place, it definitely won't hear knock, and therefore the ECU won't pull timing, but you won't have anti-knock protection.

i was wondering if i could do that, thought maybe if it didnt hear anything it might throw a cel or somthin