Will do, still felt a lot smoother this morning - it used to be roughest when cold, so definitely appears to have made a bit of an improvement...
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Cupra R - Forge Remap Logs....feels slow
- Thread starter ChrisGTL
- Start date
What's everyones opinion on uni settings? I don't think it will help much in my case as fuelling is all over the place, but maybe for you 8bit, it can be used to richen the mixture across the revs, and I'm no expert but channel 2 sounds like it may be what you need? richening up as the revs increase?
http://www.audifreaks.com/forums/showthread.php?t=197
http://www.audifreaks.com/forums/showthread.php?t=197
Hmm, my understanding is that the ECU is supposed to richen up the mix itself so I'd rather find and fix whatever is causing it not to. From what little I know about unisettings or lemmiwinks they're for fine tuning timing/fuelling for cars already highly tuned. Cheers for the link anyway tho, interesting reading 
Yeah youre probably right to fix the cause rather than patch on top of it, but was just thinking if you were worried of engine/cat damage from running lean then it could be a temporary fix until you find the root cause?
It should be OK so long as I don't thrash the car, I tend not to anyway when driving normally. If I don't rev the arse off it then the cylinder temps won't get too high. If I was seeing it running very lean all the time then I'd maybe get it adjusted until a fix was found.
If the new fuel filter and spark plugs don't sort it (which need done anyway) then all that's left really is the FPR and the pump. I'll try the FPR first as they're not too dear then the pump if that doesn't sort it.
If the new fuel filter and spark plugs don't sort it (which need done anyway) then all that's left really is the FPR and the pump. I'll try the FPR first as they're not too dear then the pump if that doesn't sort it.
I'm still confused as to how hardware can have an effect on the requested values.... I suppose over time the ECU could end up applying correction factors to the requested to make them make the actual figures hit what they need to be if the two werent matching.... but both of ours seem to have actual meeting requested, it is just the requested values that seem to be wrong... surely this has to be down to the fuelling map, even if yours is standard map as well?
Thought I'd replied to this one at the weekend, oops. There are other factors that will affect the fuelling requests besides just the map on the ECU, like lambda readings, fuel consumption rate, the knock sensors, intake air temp and pressure, exhaust gas temp readings, etc. etc. Long term fuel trims show what the car is doing by way of adjustment, this could be in response to any or all of the above, plus a lot more, probably.
Your actual vs. requested boost figures don't look massively out to me, my understanding is that they'll almost never be bang on even once the turbo spins up properly, they usually drift a little bit. Again tho I'm still a bit new to this so someone with some more knowledge than me may be more concerned but mine are around the same level of variance and I've been told mine are OK.
No worries mate, I'd probably be happier if they were 0.2bar UNDER the requested rather than over lol, 33psi seems pretty high to me....!
How do you go about seeing long term fuel trims on vagcom? any idea?
How do you go about seeing long term fuel trims on vagcom? any idea?
It's 23 psi you're seeing there, the air is already at 1000 mbar so what you're getting over and above that is the amount of boost. Subtract 1000 from any of those boost figures, what's left is how much your turbo is generating, then convert that to PSI. If you look at the actual figure when on idle you'll see about 950 - 1000 mbar, this is basically the sensor's reading for ambient air pressure at whatever altitude above sea level the car is currently located at.
33psi would mean one very dead K04-023 turbo!
Think you can see long term fuel trims on block 032. If you read that block with the engine off but electrics on then you'll see whatever its' sitting at. It will change over the course of a power run. The first column shows the current trim value and the second shows what it's averaged over a period of time (no idea how long) or since the last time the ECU was reset, whichever is most recent.
Ive just been logging again... now I've cleared the fault code for my CTS my fuelling seems to have levelled out a little... seems to be doing same as you now 8bit - sitting at 0.957 for most of the time.........
Only thing is vagcom is only logging every 1s or so, so you don't get many results for a 4th gear run... Ill try and upload the logs and link you up...
Only thing is vagcom is only logging every 1s or so, so you don't get many results for a 4th gear run... Ill try and upload the logs and link you up...
Code:
Group A: '003 Group B: '034 Group C: '031
RPM Mass Flow Load Ign. Timing RPM Temperature Lambda Factor Lambda Factor Lambda Factor
TIME TIME TIME
MARKER STAMP /min g/s % °BTDC STAMP /min °C STAMP
0 1640 21.25 16.9 28.5 0.5 1680 510 1.031 Test OFF 0.99 0.938 0.961
1.41 1800 32.22 82 16.5 1.81 1840 520 1.031 Test OFF 2.3 0.945 0.953
2.82 1960 38.11 88.6 15.8 3.22 2000 530 1.031 Test OFF 3.62 0.953 0.953
4.02 2120 47.28 92.5 14.3 4.42 2200 545 1.031 Test OFF 4.83 0.953 0.953
5.33 2320 64.58 96.9 12 5.73 2400 560 1.031 Test OFF 6.13 0.953 0.953
6.53 2600 84.11 100 4.5 6.93 2680 580 1.031 Test OFF 7.34 0.945 0.953
7.84 2880 96.61 100 8.3 8.24 2960 610 1.031 Test OFF 8.64 0.945 0.953
9.05 3160 105.33 100 10.5 9.45 3240 635 1.031 Test OFF 9.85 0.953 0.953
10.35 3440 105.47 100 14.3 10.75 3520 660 1.031 Test OFF 11.17 0.945 0.953
11.57 3680 115.94 100 14.3 11.97 3760 680 1.031 Test OFF 12.37 0.945 0.953
12.77 3920 125.06 100 16.5 13.17 4000 700 1.031 Test OFF 13.57 0.945 0.953
13.98 4160 129.86 100 18.8 14.48 4240 725 1.031 Test OFF 14.88 0.945 0.953
15.28 4400 137.67 100 18.8 15.68 4480 740 1.031 Test OFF 16.09 0.961 0.953
16.59 4600 140.5 100 19.5 16.99 4680 755 1.031 Test OFF 17.39 0.945 0.953
17.8 4800 145.94 100 16.5 18.2 4880 775 1.031 Test OFF 18.7 0.969 0.953
19.1 5000 153.08 100 15.8 19.5 5040 790 1.031 Test OFF 19.92 0.938 0.953
20.32 5160 160.47 100 15 20.72 5200 805 1.031 Test OFF 21.12 0.938 0.953
21.52 5320 164.5 99.6 11.3 21.92 5360 825 1.031 Test OFF 22.32 0.961 0.953
22.73 5440 162.67 100 11.3 23.13 5480 835 1.031 Test OFF 23.53 0.938 0.953
23.93 5440 0 7.1 0.8 24.33 4920 805 1.031 Test OFF 24.84 0.914 0.953
25.34 4320 10.14 6.7 3.8 25.74 4280 785 1.031 Test OFF 26.25 1.991 1.047
26.75 4160 9.89 6.7 4.5 27.15 4080 765 1.031 Test OFF 27.55 1.991 1.047
27.96 4000 9.36 6.7 4.5 28.46 3920 745 1.031 Test OFF 28.86 1.991 1.047
29.26 3840 9.5 6.3 3.8 29.77 3800 725 1.031 Test OFF 30.17 1.991 1.047
30.57 3680 9.08 6.3 3 30.97 3640 710 1.031 Test OFF 31.37 1.991 1.047
31.77 3560 8.75 5.9 3 32.19 3520 700 1.031 Test OFF 32.59 1.991 1.047
33.08 3440 8.92 6.3 2.3 33.59 3360 685 1.031 Test OFF 33.99 1.991 1.047
34.49 3280 8.5 5.9 2.3 35 3240 670 1.031 Test OFF 35.4 1.991 1.047
35.9 3160 8.5 5.9 2.3 36.41 3080 655 1.031 Test OFF 36.91 1.991 1.047
37.31 3000 7.97 5.5 2.3 37.71 2960 645 1.031 Test OFF 38.11 1.991 1.047
38.52 2880 7.47 5.5 1.5 38.92 2880 635 1.031 Test OFF 39.42 1.991 1.047
39.93 2800 7.31 5.1 1.5 40.43 2760 620 1.031 Test OFF 40.83 1.991 1.047
41.32 2680 7.06 5.1 0.8 41.83 2640 610 1.031 Test OFF 42.23 1.991 1.047
42.63 2600 6.78 4.7 0.8 43.05 2560 600 1.031 Test OFF 43.45 1.991 1.047edit: I think this particular run was done in 5th so more results were present
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OK I presume it only logs every second when it is logging 3 blocks at a time from what I can see....
anyway... you get the idea here - EGT also in there as this was mentioned as something to watch incase it was dumping loads of fuel in to cool down...
MAF readings are still very low, fuelling looks better than before but now doesnt seem to richen up as the revs increase.....
any ideas / input anyone?
anyway... you get the idea here - EGT also in there as this was mentioned as something to watch incase it was dumping loads of fuel in to cool down...
MAF readings are still very low, fuelling looks better than before but now doesnt seem to richen up as the revs increase.....
any ideas / input anyone?
If you log three blocks per run then you get fewer measurements on each one, the VAGCOM experts around here suggest only doing max of 2 blocks per run to get better sample rate, just a tip for next time Also you should ideally go right up as far as 6500rpm at least, if you struggle to get that far in 4th then use third, but if you do that then definitely only do 2 blocks at a time because you'll get less samples in one run in third anyway.
On the up side it looks like your fuel dumping (if that was what was causing the sporadic lambda readings of 0.75) has gone, but now your mixture isn't richening up higher up the rev range. You only hit a max airflow of 164.5 but then that was only at 5320rpm. Our engines have variable valve timing which (I understand) kicks in at 5500rpm, which is why some folks notice an extra little kick in boost around there, so if you can do some more logs, only 2 blocks at once, in third if you have to, right up to about 6500.
Was the car already warmed up a bit when you did these?
Also you should ideally go right up as far as 6500rpm at least, if you struggle to get that far in 4th then use third, but if you do that then definitely only do 2 blocks at a time because you'll get less samples in one run in third anyway.On the up side it looks like your fuel dumping (if that was what was causing the sporadic lambda readings of 0.75) has gone, but now your mixture isn't richening up higher up the rev range. You only hit a max airflow of 164.5 but then that was only at 5320rpm. Our engines have variable valve timing which (I understand) kicks in at 5500rpm, which is why some folks notice an extra little kick in boost around there, so if you can do some more logs, only 2 blocks at once, in third if you have to, right up to about 6500.
Was the car already warmed up a bit when you did these?
Yeah it was warmed right through had been logging all morning, hence the 800 odd EGTs lol
Yeah I've only just realised that's why it was at a lower sample rate.. in work at the moment, and I'm working 8-6 tomorrow so I might have to have a cheeky little log on the way home tonight!
See what I mean how I seem to have developed the same problem you were having now? lol
one thing after another with these cars!!
Yeah I've only just realised that's why it was at a lower sample rate.. in work at the moment, and I'm working 8-6 tomorrow so I might have to have a cheeky little log on the way home tonight!
See what I mean how I seem to have developed the same problem you were having now? lol
one thing after another with these cars!!
Cleaned it twice in the last year - second time it was fine didnt really need doing, so should be fine now...
reset it today, although I can't remember if it was before/after the logs....
wouldnt that only affect fuelling at low revs though, as under WOT a slight degree of difference in the TB angle aint gunna make much difference is it?
reset it today, although I can't remember if it was before/after the logs....
wouldnt that only affect fuelling at low revs though, as under WOT a slight degree of difference in the TB angle aint gunna make much difference is it?
Have read reports of folks curing strange boost performance at mid-range revs by doing a TB clean and reset, was worth a shot but guess you've already covered that
To be honest I'm not really sure what your EGTs are like, in terms of I dunno if they're particularly high or not, I'm afraid. Hopefully someone who knows more can comment?
Just seen your point about doing that run in 5th - bloody hell no wonder you didn't hold out til 6500rpm! When you log again, do 003 and 034, then 031 and 020? Might be worth seeing if the engine is pulling back timing with the fuelling being the way it is.
Also, you can check your long-term trims by checking block 032 with the engine off before you start off. Bear in mind this will only go back as far as your last ECU reset tho, maybe do that after a couple of logging runs so there's some history in there.
Can't remember if I posted this link before or if you already read it, but looks like a tired old fuel pump could be the cause - http://seatcupra.net/forums/showthread.php?t=262399 - I guess if the pump isn't supplying the requested fuelling then the ECU may only request what it knows it can get?
To be honest I'm not really sure what your EGTs are like, in terms of I dunno if they're particularly high or not, I'm afraid. Hopefully someone who knows more can comment?
Just seen your point about doing that run in 5th - bloody hell no wonder you didn't hold out til 6500rpm! When you log again, do 003 and 034, then 031 and 020? Might be worth seeing if the engine is pulling back timing with the fuelling being the way it is.
Also, you can check your long-term trims by checking block 032 with the engine off before you start off. Bear in mind this will only go back as far as your last ECU reset tho, maybe do that after a couple of logging runs so there's some history in there.
Can't remember if I posted this link before or if you already read it, but looks like a tired old fuel pump could be the cause - http://seatcupra.net/forums/showthread.php?t=262399 - I guess if the pump isn't supplying the requested fuelling then the ECU may only request what it knows it can get?
Code:
RPM Mass Flow Load Ign. Timing Idle Stabilization Idle Stabilization Idle Stabilization Idle Stabilization Lambda Factor Lambda Factor
TIME TIME TIME
MARKER STAMP /min g/s % °BTDC STAMP CF CF CF CF STAMP
0 1800 33.28 52.5 19.5 0.38 0 0 0 0 0.8 0.938 0.961
1.31 1960 38 88.6 16.5 1.81 0 0 0 0 2.21 0.945 0.953
2.7 2200 52.47 93.3 15 3.12 0 0 0 0 3.52 0.961 0.953
4.01 2480 71.17 99.2 11.3 4.41 0 0 0 0 4.83 0.953 0.953
5.23 2760 93.03 100 6.8 5.63 0 0 0 0 6.03 0.945 0.953
6.43 3080 105.42 100 9.8 6.83 0 0 0 0 7.25 0.945 0.953
7.74 3440 109.67 100 13.5 8.24 0 0 0 0 8.65 0.953 0.953
9.05 3760 121.31 100 15 9.55 0 0 0 0 10.06 0.953 0.953
10.46 4080 128.64 99.6 17.3 10.86 0 3 0 0 11.36 0.945 0.953
11.76 4360 136.5 100 15.8 12.17 0 2.3 0 0 12.57 0.938 0.953
12.97 4600 139.11 100 19.5 13.47 0 2.3 3 0 13.87 0.961 0.953
14.28 4800 144.86 100 19.5 14.78 3 1.5 6 3 15.18 0.945 0.953
15.69 5000 156.14 100 15 16.09 2.3 0.8 5.3 6 16.59 0.961 0.953
16.99 5160 156.72 100 12 17.4 5.3 3.8 5.3 5.3 17.9 0.938 0.953
18.4 5320 159.06 100 14.3 18.81 4.5 3 4.5 5.3 19.21 0.93 0.953
19.61 5440 164.56 100 14.3 20.01 4.5 6 3.8 4.5 20.41 0.961 0.953
Code:
Group A: '003 Group B: '115 Group C: '020
RPM Mass Flow Load Ign. Timing RPM Load Absolute Pres. Absolute Pres. Idle Stabilization Idle Stabilization Idle Stabilization Idle Stabilization
TIME TIME TIME
MARKER STAMP /min g/s % °BTDC STAMP /min % mbar mbar STAMP CF CF CF CF
27.55 2960 9.03 6.3 11.3 27.96 2960 48.1 1010 980 27.15 0 0 0 0
28.86 3120 97.61 100 21 29.26 3240 169.2 2040 2110 28.46 0 0 0 1.5
30.17 3600 124.06 100 10.5 30.57 3760 176.7 2060 2170 29.68 0 0 0 1.5
31.37 4000 133.08 100 15.8 31.79 4160 171.4 2050 2120 30.97 0 0 0 1.5
32.68 4440 142.5 100 17.3 33.08 4560 169.9 2010 2050 32.19 0 0 0 0.8
33.9 4800 150.44 100 18.8 34.3 4920 164.7 2000 2020 33.48 0 0 0 0
35.1 5160 164.69 100 13.5 35.59 5320 169.2 1970 2010 34.7 3 0 0 3
36.41 5480 171.58 100 17.3 36.81 5600 163.2 1940 1980 36.01 2.3 3 0 3
37.61 5800 173.67 100 18 38.03 5880 140.6 990 1720 37.21 2.3 3 3 2.3
Last edited:
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