thank you tephra

 

This is so true!! I have been weighting for over a year to fix my jackson knocker.lol

 

Many stock ECU's are plagued with this issue. We asked Tephra over a year ago if there was access to this rpm ignore, to no avail.

I have seen a car or two that was so severe that I told them to sell it.

I have an OEM block back in the car and it still does it on my 96940011 with Cosworth M2, INJEN intake.

 

Yeah I havn't had the time to look at it properly.

I would like to understand the code rather than just overriding it.. So we shall see how it goes

 

Tephra you are the man.

btw I might be in Australia next year sometime. I owe you some beers.

 

cool... well come down

ok tuners - if you had a had the ability to do something with knock control what would you do?

disable at certain rpms, disable at certain loads, etc etc...

Try and make it simple but effective...

 

i would like to disable it below a certain rpm, reason being that my knock is load independent

if possible i would still like to see the knock sums throughout the rev range, but that is a secondary concern

maybe enable knock control only when exceeding a certain load and rpm

 

My wishlist:

1. Certain load and RPM

2. Still able to log actual knock count no matter the settings

3. Also be able to set knock retard ceiling, example: ignore (do not pull timing) for knock counts 6 and below

If I had to pick two it would be #2 and #3

If I had to pick one it would be #3

 

oh so like only pull timing for 4 KS and above?

 

Yea, the number being adjustable.

 

Right well I think I have found the piece of code that controls what todo with IgnAdv when knock is encountered....

It's not immediately obvious to me how it works, but we can hook in at the top of routine and add in whatever conditions we want.

Obviously this wont affect the OctaneLevel stuff (yet) so if you hit more than 6 twice it will still start reverting to low octane maps. However it should stop timing from being pulled.

I want to keep the conditions as simple as possible, so let me think about the best combination of those..

edit - Incidentally I *may* have found the code that controls the max ign retard (ie -10) - I will fiddle with this and see if I can log -20 or something

 

#3 is what I want more than anything.......so sick of timing being pulled for minimal knock counts.

 

1. is most important to me

 

yeah it would be nice to instead of pulling 1* at 3sum to pull 3* at 5sum and 0 at 3sum. Something like that, pretty much what razorlab described. I think the subaru guys have control over this.

 

Yeah, not just you for sure. From what I have seen 2.4's are the worst. More often than not 2.3's work just dandy with the stock knock control but we have had to disable knock control and install a knock link on a 2.4 in the past. If we had to do it again, I would go with the turbo xs knock lite since it allows you to set the voltage threshold across the rpm range similar to aem, but without the ability to retard timing or dump fuel...


I'll add a +1 to Razorlab's post...