cij911

iTrader: (14)

I don't always drive the car with the laptop connected and would like to know if / when my car is knocking. I am thinking of fabricating a Knock Gauge that would record instantaneous and highest knock count, has anyone done this already? (Very similar to some AFR gauges...)

I think an alarm / buzzer / light could be incorporated too, alerting the driver of a potential issue. Thoughts?

sub7

Try HKS Knock monitor?

http://www.autodesignhaus.com/tuners/hks/ipm.htm

l2r99gst

iTrader: (2)

Bez modified a ROM to flash the CEL when there was a ceratin amount of knock, that was user-definable. I worked a lot to get this patch to work for my ROM, but for some reason I couldn't get it to work. Maybe I will eventually get back to it again, but I just wanted to let you know that Bez has already successfully created a knock light.


Eric

cij911

iTrader: (14)

Thanks for the feedback guys...I will ping Bez and see what he has done...

andenbre

iTrader: (4)

if you find a way let us know

Dennis F

iTrader: (22)

I would also like to know if this can be done.

oldevodude

iTrader: (3)

+1 Subscribed

ApexVIII

iTrader: (1)

me too.

Wheatley

iTrader: (20)

would be nice, dsm link flashes the cel with high knock

Jeff_Jeske

iTrader: (66)

There are tons of us that have been spoiled by DSMLink L2R and myself included.

cij911

iTrader: (14)

Ok guys I am looking into having a nice gauge fabricated with a toggle button to show highest knock count. The gauge would reset upon ign. off.

I will look at the standard gauge sizes and try to offer different bulb options. No idea on cost yet, but I am going to guess that it would be ~$200.

coolnick

iTrader: (9)

I think the CEL would be sufficient. No need for another gauge.

l2r99gst

iTrader: (2)

Actually, I had a few minutes free and I looked into this again. Bez actually wired in an LED into the rear O2 heater circuit, after disabling the rear o2 and changing the code to trigger the output for the heater circuit for a user-definable knock level. I actually made the same patch for my ROM, but I thought the CEL was supposed to flash and not a wired in LED.

So, to make a long story short, I do know how to patch my ROM for this, but you would need to disable the rear O2 vai the ECU Perephery map and then wire in an LED on the heater circuit along with the actual coding changes for the patch.

Maybe I will test this again in the near future, but I would really like to find a way to flash the CEL, since I want to keep my rear O2 enabled so that I can pass OBD-II emissions when the time comes.


Eric

dan l

iTrader: (3)

It should be just as easy to flag the CEL as it is to flag the rear O2 heater output no?

jcsbanks

No one can find the port address for the CEL. It may go through a multiplexer.