the op's asking what your timing maps set to not your actual logging of timing

 

i tuned a VIII to 4 deg @ 3000rpm+260load and 0 knock so could probably push it a bit more.6000rpm its running 12 deg 0 knock 240 load.7500rpm/18 deg/0 knock/240 load

 

Do a lot of people adjust the knock settings? I haven't touched mine, but if I could make the sensor less sensitive that sure would help out.

 

I wouldn't be ****ing with those settings. If you're that paranoid look at your timing, if its true knock the timing will retard.. also log the voltage for knock like mentioned also. if you have huge spikes, then chances are its real.

 

Oh I wasn't planning on messing with the settings really. I think I might have phantom knock or something.

 

you don't by chance have one of those engine dampeners do you? those things cause phantom knock big time.

just look at your logs.. does your timing get pulled where the ecu is registering knock counts? if so its real knock. i would log voltage though and see if the knock sensors doing its job.

 

MBT is a static number...in our case because of bore and head design about 19*

If I could run 19* at peak torque I would, but anything less than methanol probably won't let you do that.

To answer your question, I quote Douglas Adams "Reality is what you get away with".

reality=knock on pump fuel

 

I think you mean that the crank angle for peak pressure achieving best torque is a static number. But the timing needed for combustion to achieven that peak pressure at that static crank angle changes with various factors such as AFR, fuel, RPM, etc.

I'm sure you meant that, but wanted to clarify for anyone reading.

 

Yes, thank you. I reread what I posted and I can see where that might look odd to those that just look at it as is. The event always times out to complete combustion after TDC, its the starting point we are concerned with. This gets longer and longer at higher rpm to get all the charge thoroughly combusted. Why one day I am going to use an OPTRAND based pressure triggered ignition event and just run after IMEP . Realtime knock control, perfect combustion, ahh it will be grand.

cliffs- this why we run more up top than down low.

 

Kind of off topic but is this true? I thought phantom knock still pulled timing and the only way to tell was to watch knock voltage? I don't have any clear logs to show this and thats why I ask.

 

Any knock will retard timing. And you can't distinguish between the two simply by looking at knock voltage.

 

ya.. i was getting confused with when i used to tune with a pocketlogger and look at the timing activity and see where its knocking..

all voltage comparing does is confirms if its bad knock or not, from what i gathered if its bad knock the voltage will spike, if its weak knock it will show little voltage...

you're at the knock sensors mercy basically, and you have to rely on it.

 

That sounds like a bad way to assume something is or is not knock. Det cans are really the only true way.

Check the knock sensitivity tables thread for more info.

 

ive never really full out tuned my car so i dont know all those tricks. im afraid to tune my car myself with anything over 400whp because its to dangerous , and i figure if i go somewhere with a dyno i may as well pay someone more experienced than me to do it. I used to beable to tune the dsmlink nice but im half ***'ed when it comes to the evo

I almost bought your purple 2g years ago, infact i visited your site and almost **** when i seen you were the same guy with that ams 2g... small world.

 

If you can tune with DSMLink, you can tune with ECUFlash. There isn't any magic going on here.