Inexpensive, Effective, Closed Loop Knock Control for Haltech ECUs
 

Less cost than J&S, pulls both leading and trailing, no need for minimum split, adjustable max retard...

If your interested check it out:

https://www.rx7club.com/haltech-forum-62/closed-loop-knock-control-haltech-ecus-583563/

http://cgi.ebay.com/ebaymotors/Close...spagenameZWDVW

Justin

Would this work with a MicroTech?

Does the MicroTech have a manual ignition trim function, like the Haltech?

Justin

Well,

What i did for closed loop on my wolf is similar. I purchased a J and S, connected the monitor output to the ignition trim feature, set up a linear scale for retard all. 20 deg max retard on the J&S is 1.03v. I set a linear table to retard ignition for every .Xv that the unit senses and retards. This way i retard the ign map :)

http://i4.photobucket.com/albums/y13...oltagetrim.jpg

Justin, this way is a cost effective and easy way of doing it! nice work!

ps, i am using this on the wolf, but any ecu with a voltage trim input can be configured!

i'd hit it if it had everything included.

will it work with a gm knock sensor, or only a single wire?

Wow, now that I see how the wolf can use an analog input to vary timing I can say that my circuit should work just fine in its current form with a wolf ecu. Just set the timing chart to pull 8 degrees (or any value to max retard) at ~0V input and then linearize up to pull 0degrees at 2.5V and above and this would do it.

Does anyone want to try this?

Justin

It just needs to be a piezo electic style knock sensor that puts out a voltage proportional to the intensity of the knock. If this signal can be pulled from one of the two wires on a two wire knock sensor then it should work. It just needs to put out a voltage spike (like a variable reluctance sensor) when excited.

Justin

Closed Loop knock Control Forsale
 

Check the 2nd Gen Forsale section if interested...

Justin