I remember a while back someone had a thread about better alternatives to the oem honda knock sensor but I can't find it to save my life

I think he brought up bosch units as well as oem nissan units if I remember correctly.

Please don't tell me to skip the knock sensor or bypass it, I've always tuned my cars with a knock sensor because I like knowing if something is wrong and will never go without

Now I recall that the oem sensors are notorious for picking up non knock/detonation engine noise and vibration and reporting it as knock. Based on how the oem sensor is built I don't doubt this, besides I've had a few separate during removal/installation

I'm running an AEM EMS so I can utilize a knock sensor. I have many Nissan units from Sr20dets and vg30detts laying around

This style



Like I said I can't remember what the thread mentioned but I have to imagine these units are better than the 1 wire honda sensors. Plus I could theoretically run two evenly spaced off the back of the motor to accurately detect knock in all 4 cylinders

Then of course there's the whole putting the stock ecu back in since I'm obd2 and have to pass the scanner each year. So I'm pretty sure the stock ecu won't like the different sensor, at which point I would use the bypass just to fool the stock ecu because obviously I'm not running around beating on the car getting into boost, etc on stock injectors, ecu and map lol

Thoughts, advice and/or opinions?

 

Not to mention every honda sensor I have is broken and I'm not shelling out that much cash for something that sucked in the first place lol

 

This was the Knock Sensor test that I always refer to:
http://www.max-boost.co.uk/max-boost...ings_Knock.htm

Im using the Bosch OE knock sensor controlled by the KnockSense kit which may be better than using the raw signal input as it very easily filters out the noise.
http://www.viatrack.ca/

The knocksense has a warning LED when knock is detected and I also log the 5v output. There is no way to setup a Honda Ecu EMS to actively retard ignition based on this input but you could with a standalone EMS such as AEM EMS or Motec.

 

That's why I'm using an AEM ems lol
I want to ability to tune and monitor knock but in the event a knock count is detected I want to be able to pull timing.

 

And that function is powerful but also complicated to tune exactly how much it needs to pull and for how long etc. I want it to help me feel out the detonation limit when tuning the ignition curve.

You want closed loop feedback. Im happy with open loop.

 

I tuned our ls7 and relied a lot on the knock sensor. Final tune had 0 knock count. I've always tuned using the knock sensor as an aid but like you said, figuring out how much timing to pull and for how long is the trick

I would probably incorporate something like a temporary drop in boost pressure, long enough to let me establish the conditions at which the knock occured and adjust accordingly

I'm wondering if engine noise and vibration (using solid motor mounts) would cause the knock sensor to pickup the noise as knock. I probably need a filter of some sort

 

Engine noise yes, vibration usually no. I have solid mounts and mine is not going off all the time. But when my sensativity was set too high it would light off on VTEC engagement.

The KnockSense is nice because you can easily adjust sensativity with a ****. You would do the same thing with AEM EMS by establishing a baseline on the Knock Sensor Cal table. Anything above that threshold is considered real knock.

 

http://www.jandssafeguard.com/

 

Thanks for the time machine link

 

Not cheap by ANY means with our exchange rate and the added shipping.

http://www.phormula.co.uk/