TephraMOD V5.10
Nov 4, 2008, 08:56 PM
#541
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Jack, I have logged extensively with the 0015 in my 04, no tip-in knock whatsoever. I have tested in every gear, from 2000rpms+.
Your issue is basically at 2000-2500rpms with loads around 100-140? and it doesn´t go away with less timing? That area seems to be a bit problematic as I´ve read people mentioning it´s a "knock-prone" zone in 4G63s. But if your problem is only on tip-in, it may not be related.
Your issue is basically at 2000-2500rpms with loads around 100-140? and it doesn´t go away with less timing? That area seems to be a bit problematic as I´ve read people mentioning it´s a "knock-prone" zone in 4G63s. But if your problem is only on tip-in, it may not be related.
Nov 5, 2008, 09:19 AM
#542
Well, the tuning changes to help eliminate the tip-in knock issue have dropped my fuel economy about 15%. Considering I still get the tip-in knock quite often, I think I'll put it back to where it was to at least get my fuel economy back.
The issues pop up when the timing seems to be deviating heavily from the maps anyway. The main map is telling it to run ~30 degrees. However, the ECU is logging 40-42 degrees the instant before the knock occurs. It's a spike too. It will be running low 30s right before the event, which with compensation, I assume this is where it should be, and then it will jump up to 40+, then knock and pull back to the low 30s. The knock count drops right back to zero and the run goes on like normal. The logger is only showing 1 count of knock too and typically just for 1 sample. However, I have the knock light set at 2 counts and the fast set at 6 and it usually gets enough knock to set off the fast flash.
I think I'll try one of the older Tephra versions as well and see if it changes anything. Also, a co-worker is using V5.10 in his IX and has the same tip-in issues.
I was wondering if maybe the fact we are at 4800' in elevation is messing with something?
The issues pop up when the timing seems to be deviating heavily from the maps anyway. The main map is telling it to run ~30 degrees. However, the ECU is logging 40-42 degrees the instant before the knock occurs. It's a spike too. It will be running low 30s right before the event, which with compensation, I assume this is where it should be, and then it will jump up to 40+, then knock and pull back to the low 30s. The knock count drops right back to zero and the run goes on like normal. The logger is only showing 1 count of knock too and typically just for 1 sample. However, I have the knock light set at 2 counts and the fast set at 6 and it usually gets enough knock to set off the fast flash.
I think I'll try one of the older Tephra versions as well and see if it changes anything. Also, a co-worker is using V5.10 in his IX and has the same tip-in issues.
I was wondering if maybe the fact we are at 4800' in elevation is messing with something?
Last edited by 03whitegsr; Nov 5, 2008 at 09:27 AM.
Nov 5, 2008, 11:34 AM
#544
Well, the tuning changes to help eliminate the tip-in knock issue have dropped my fuel economy about 15%. Considering I still get the tip-in knock quite often, I think I'll put it back to where it was to at least get my fuel economy back.
The issues pop up when the timing seems to be deviating heavily from the maps anyway. The main map is telling it to run ~30 degrees. However, the ECU is logging 40-42 degrees the instant before the knock occurs. It's a spike too. It will be running low 30s right before the event, which with compensation, I assume this is where it should be, and then it will jump up to 40+, then knock and pull back to the low 30s. The knock count drops right back to zero and the run goes on like normal. The logger is only showing 1 count of knock too and typically just for 1 sample. However, I have the knock light set at 2 counts and the fast set at 6 and it usually gets enough knock to set off the fast flash.
I think I'll try one of the older Tephra versions as well and see if it changes anything. Also, a co-worker is using V5.10 in his IX and has the same tip-in issues.
I was wondering if maybe the fact we are at 4800' in elevation is messing with something?
The issues pop up when the timing seems to be deviating heavily from the maps anyway. The main map is telling it to run ~30 degrees. However, the ECU is logging 40-42 degrees the instant before the knock occurs. It's a spike too. It will be running low 30s right before the event, which with compensation, I assume this is where it should be, and then it will jump up to 40+, then knock and pull back to the low 30s. The knock count drops right back to zero and the run goes on like normal. The logger is only showing 1 count of knock too and typically just for 1 sample. However, I have the knock light set at 2 counts and the fast set at 6 and it usually gets enough knock to set off the fast flash.
I think I'll try one of the older Tephra versions as well and see if it changes anything. Also, a co-worker is using V5.10 in his IX and has the same tip-in issues.
I was wondering if maybe the fact we are at 4800' in elevation is messing with something?
Nov 5, 2008, 11:47 AM
#545
Evolved Member
Is it possible that "tephra's bit9 thingy which is supposed to disable the low load variances from the map" is a transient ignition advance function?
I have seen and used this (sparingly) on some aftermarket ECUs and was wondering if it was the same sort of function.
I have seen and used this (sparingly) on some aftermarket ECUs and was wondering if it was the same sort of function.
Nov 5, 2008, 01:22 PM
#546
Jack of Trades, did several freeway onramp tip in pulls in 3rd 2500 and a few above..nothing out of the oridnary for me. did some more this morning after adjusting my timing on 2step area..nothing again. I don't know if it is the cold air temp or that I'm using water/alch., but I have no unusual knock.
Nov 5, 2008, 01:26 PM
#547
To try and cure some of the ignition retard issues, I have zero'd out the "boost enhancement (anti-lag)" map for ignition and fuel. I have also disabled FAA bit 10. Further, I have reduced peak timing in the main ignition table from 38 degrees to 35 degrees. The combination of these seems to have helped, but not solved my problems.
I have FAA Bit 10 disabled currently with the "boost enhancement enrich/enlean (anti-lag)" table set to 14.7 across the board. From what I have gathered, in the 94170015 xml, this table may be mislabeled and it should be labeled as an EGR dynamic enleanment table to go along with the EGR ignition table. These last two items combined seem to have dropped my mpg from 22mpg to 19mpg without fixing my part throttle issues. It has seemed to reduce the problem a bit though when combined with knocking the max timing down from 38 degrees to 35 degrees.
Nov 5, 2008, 05:24 PM
#549
He needs stock 0015 roms to compare to his patch version. I think I will try to finesse my timing a little more and see if I can't remedy this once and for all. Seeing as I run 93 octane and my factory maps are for 91 octane (USDM) you'd think knock would be LESS prone for me in that range. Cars.
Nov 5, 2008, 06:06 PM
#550
Nov 5, 2008, 07:57 PM
#553
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Thats why I stated earlier that I'm planning on swapping back in an old rom with maps copied over to see if it occurs this weekend.
Nov 5, 2008, 08:12 PM
#554
I have the 94170015 rom with the lean spool enabled. No tip in knock issues. Have you guys tried tuning with the lean spool enabled? I'm going to disable my lean spool again. Hadn't noticed that I removed it when switching roms.
Does sound like a tooning issue.
Does sound like a tooning issue.
Nov 5, 2008, 08:34 PM
#555
Above when I said I went back, I just wanted to clarify, that when I had "tip in" knock, I was running ecuflash 1.38 and Tephras' 5.10. Prior to that I had the ecuflash 1.34 and 2 byte load and an earlier Tephra patch (Whoever reads this I hope you paid Tephra, BTW) and my tune was great, added an intake with no issues at all. Flashed to 1.38/5.10 at the dyno, to optimize my tune for the intake and take advantage of the 1.38/5.10. This is where I had the knock all the way home, 2 hours of me thinking WTF. I had Mase come to my house and reflash 1.34 and swap over my maps, with no knock. I asked after for a road tune for my peace of mind, as I didn't trust the tune from the dyno beause of because of the knocking. I was thinking it could have effected the over all tune. Now I'm sitting pretty.