How to the Spark Tables work?
#1
How do the Spark Tables work?
I apologize for the noob question, but could someone explain how the spark tables work in EFILive? There is a high-octane table, low-octane table, optimal spark table, and base spark table, and maybe more. At highway speed at lowish RPM and moderate TP I am getting some knock retard and I'm confused as to which table I need to be looking at. Also, during normal cruising and fully warm, my spark does not match any of the tables. It's close to the high-octane table but usually 1-2 deg below. Could be due to interpolation I suppose.
When knock retard occurs, how is the new spark calculated?
Feel free to post a link, I couldn't find one
Thanks!
When knock retard occurs, how is the new spark calculated?
Feel free to post a link, I couldn't find one
Thanks!
Last edited by Ferocity02; 02-12-2013 at 11:36 PM.
#5
Yes the ones I sent you. I also flashed in a stock tune this morning (with some adjustments for the T56 swap DTC's, idle, and fans), reset the LTFTs before setting off, and still got some knock retard, albeit not as much. I'm running 87 octane though.
Is having the low-octane table 8-10 degees lower than the high-octane table a good rule of thumb?
Last edited by Ferocity02; 02-12-2013 at 03:16 PM.
#7
Tune and logs from this morning are attached.
0006 is a long drive to work, a couple spots of KR, nothing exciting. I took it easy because its a stock tune.
0007 is a short idle when I got to work to look at my O2 sensors because someone said they were acting funny. As in not switching fast enough, inconsistent switching, lazy, etc. They only have 10k miles on them though.
0006 is a long drive to work, a couple spots of KR, nothing exciting. I took it easy because its a stock tune.
0007 is a short idle when I got to work to look at my O2 sensors because someone said they were acting funny. As in not switching fast enough, inconsistent switching, lazy, etc. They only have 10k miles on them though.
Trending Topics
#8
TECH Senior Member
iTrader: (27)
That burst of KR looks false to me. 1700 rpm 30% TPS is putting some load on it, its probably picking up some valvetrain noise. Get a wideband on it to confirm AFR.
That stock tune has your timing in the dumps. It's anywhere from 11-15* at WOT. You're beyond the expected airflow for the stock cam and in the lower part of the timing table. Get a wideband on it, do AutoVE and get the timing around 23-24 degrees. You will see a significant performance increase.
That stock tune has your timing in the dumps. It's anywhere from 11-15* at WOT. You're beyond the expected airflow for the stock cam and in the lower part of the timing table. Get a wideband on it, do AutoVE and get the timing around 23-24 degrees. You will see a significant performance increase.
#9
That burst of KR looks false to me. 1700 rpm 30% TPS is putting some load on it, its probably picking up some valvetrain noise. Get a wideband on it to confirm AFR.
That stock tune has your timing in the dumps. It's anywhere from 11-15* at WOT. You're beyond the expected airflow for the stock cam and in the lower part of the timing table. Get a wideband on it, do AutoVE and get the timing around 23-24 degrees. You will see a significant performance increase.
That stock tune has your timing in the dumps. It's anywhere from 11-15* at WOT. You're beyond the expected airflow for the stock cam and in the lower part of the timing table. Get a wideband on it, do AutoVE and get the timing around 23-24 degrees. You will see a significant performance increase.
Could this be burst knock retard? Is burst knock retard unavoidable?
I do have a wideband but it won't be going until until the turbo does.
#10
TECH Senior Member
iTrader: (27)
The low and high octane tables are identical at a glance. I would put the low octane table back to stock.
Also, I didn't see anything in that log convincing for real knock. But without an AFR reading I can't say that for sure. Your B6245 table is set up with the knock sensors overly sensitive, in my experience.
Also, I didn't see anything in that log convincing for real knock. But without an AFR reading I can't say that for sure. Your B6245 table is set up with the knock sensors overly sensitive, in my experience.