Acceptable knock retard?
02-20-2017, 07:49 PM
#1
Instructor
Thread Starter
Acceptable knock retard?
Car is LS3 A6 with A&A Ti base kit, MAF tuned, stock headers, no meth....yet.
I just got HP Tuners recently and did some data logs. The logs show some knock retard activities that made me little worry. Are they in the acceptable range or do I need to some adjustments to the tune? It is a conservative tune as you can see the timing is kind of low.
I just got HP Tuners recently and did some data logs. The logs show some knock retard activities that made me little worry. Are they in the acceptable range or do I need to some adjustments to the tune? It is a conservative tune as you can see the timing is kind of low.
02-20-2017, 09:46 PM
#2
Race Director
Member Since: May 2004
Location: Raleigh, NC
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St. Jude Donor '15
How much boost? You aren't logging MAP so we can't see that part
I'd be surprised if it's real knock and I don't see anything that I'd call "severe", but it's more than I'd want to see honestly. I've seen some that are pulling 12*+ and as soon as it starts to fall off it comes right back.. really bad compared to this.
I would try reducing timing in the knock areas a few degrees and see what happens. If it goes away then it was real, if not, then probably not. Timing is already low so I have a feeling it's not real
Fuel trims are pretty high right before the pulls.. and without a wideband it's impossible to know what the AFR actually is.
Just throw some meth on it
I'd be surprised if it's real knock and I don't see anything that I'd call "severe", but it's more than I'd want to see honestly. I've seen some that are pulling 12*+ and as soon as it starts to fall off it comes right back.. really bad compared to this.
I would try reducing timing in the knock areas a few degrees and see what happens. If it goes away then it was real, if not, then probably not. Timing is already low so I have a feeling it's not real
Fuel trims are pretty high right before the pulls.. and without a wideband it's impossible to know what the AFR actually is.
Just throw some meth on it
Last edited by schpenxel; 02-20-2017 at 09:47 PM.
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DanC8 (02-20-2017)
02-20-2017, 11:18 PM
#3
Instructor
Thread Starter
How much boost? You aren't logging MAP so we can't see that part
I'd be surprised if it's real knock and I don't see anything that I'd call "severe", but it's more than I'd want to see honestly. I've seen some that are pulling 12*+ and as soon as it starts to fall off it comes right back.. really bad compared to this.
I would try reducing timing in the knock areas a few degrees and see what happens. If it goes away then it was real, if not, then probably not. Timing is already low so I have a feeling it's not real
Fuel trims are pretty high right before the pulls.. and without a wideband it's impossible to know what the AFR actually is.
Just throw some meth on it
I'd be surprised if it's real knock and I don't see anything that I'd call "severe", but it's more than I'd want to see honestly. I've seen some that are pulling 12*+ and as soon as it starts to fall off it comes right back.. really bad compared to this.
I would try reducing timing in the knock areas a few degrees and see what happens. If it goes away then it was real, if not, then probably not. Timing is already low so I have a feeling it's not real
Fuel trims are pretty high right before the pulls.. and without a wideband it's impossible to know what the AFR actually is.
Just throw some meth on it
I gave my buddy a ride sometime and he said that he heard knocks. Now the logs kind of confirm it. It looks very real to me since it happened between 5200-5700 RPM where the max torque curve but my timing is very conservative compare to others on here
I will play with timing a bit and see. I am getting the wide band real soon to incorporate into the log and see.
And yes meth is coming in a month or 2
. It will get hot here very soon.