Inexpensive, Effective, Closed Loop Knock Control for Haltech ECUs
#1
Senior Member
Thread Starter
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
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
#4
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
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!
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
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!
#6
Senior Member
Thread Starter
Originally Posted by signofinfinity
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
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!
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
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!
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
#7
Senior Member
Thread Starter
Originally Posted by GUITARJUNKIE28
i'd hit it if it had everything included.
will it work with a gm knock sensor, or only a single wire?
will it work with a gm knock sensor, or only a single wire?
Justin
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