Knock Sensor On Safcii

[chrishelliwell33]

Noticed the other day when i was playing around with monitor settings on my SAFCII that at idle, it is reading 10-15 on the knock sensor, but as soon as i give it any throttle, it goes back to zero.

Should i be worried about this?

Cheers,

[GeeTR]

If the SAF uses the same sensitivity ratio as PFC, i would say, don't worry.

Even if it doesn't, the fact it gets quieter as revs rise, makes it even less important

If interested, borrow some "Det cans" from a tuner, or good mechanic.

If not, use the ole "long screw driver to the ear" on different points in the engine bay - You'd be surprised by the amount of noise generated by diff parts of the system. Theres a chip or multi staggered spectrum analyzer built into OE ECU, PFC and other AM products like the Knock Link thats job is to isolate proper chamber det from other noises.

Edited March 8, 2008 by GeeTR

[Busky2k]

Disregard knock idle values. You should actually try and recalibrate the knock sensing if possible. What you are looking for is values well above 'idle' values (which is noise) when giving the car some stick.

[chrishelliwell33]

Awesome cheers guys, settles my nerves a bit

[Guilt-Toy]

you only need to worry about knock that goes over 40 or 50 anyway. so yeah 15 is nothing. probly a noisy spark plug