Vagcom Logs

[Nabraxas]

Hi,

I'm posting these on behalf of a friend - we recently attended a Rolling Road day, however, my LCR hit 267bhp whilst his hit around 240bhp - both remapped (His Revo's and mine Custom code), both with aftermarket induction kits, mine with standard exhaust and his aftermarket.

Would it be possible to check the logs below to see if there's any particular issues at all which could cause a low figure or is it, as the operator said, likely to be due to charge temperatures on the rolling road?

Group A:	'031					Group B:	'118			
	Lambda Factor	Lambda Factor	Bin. Bits	Bin. Bits			RPM	Temperature	Load	Absolute Pres.
TIME						TIME				
STAMP						STAMP	 /min	°C	%	 mbar
10.27	1.008	1	        	        		10.75	1640	34	0	1020
11.17	1.008	1	        	        		11.57	1680	34	0	1020
11.98	0.945	1	        	        		12.48	1760	34	0	1040
12.97	0.906	1	        	        		13.49	2000	32	100	1190
13.89	1.008	1	        	        		14.29	2280	30	100	1390
14.69	0.977	0.961	        	        		15.09	2640	29	100	1730
15.5	0.961	0.945	        	        		15.9	3080	28	87.5	2350
16.3	0.953	0.93	        	        		16.8	3640	27	83.1	2410
17.2	0.891	0.891	        	        		17.61	4120	27	83.9	2390
18.01	0.86	0.875	        	        		18.41	4600	29	85.5	2350
18.91	0.867	0.875	        	        		19.33	5080	30	89	2280
19.73	0.875	0.875	        	        		20.22	5520	32	91.4	2190
20.62	0.86	0.875	        	        		21.02	5880	33	88.6	2160
21.44	0.883	0.875	        	        		21.84	6160	35	88.6	2190
22.33	0.836	0.836	        	        		22.73	6480	36	91.8	2080
23.15	0.789	0.782	        	        		23.55	6720	38	94.9	2140
23.95	0.75	0.719	        	        		24.46	6960	39	99.2	2070
24.96	0.75	0.743	        	        		25.45	7200	42	91.8	2020
25.85	0.782	0.774	        	        		26.27	7240	42	0	1850

Group A:	'032					Group B:	'003			
	Lambda	Lambda	Bin. Bits	Bin. Bits			RPM	Mass Flow	Load	Ign. Timing
TIME						TIME				
STAMP	%	%				STAMP	 /min	 g/s	%	 °BTDC
6.03	0.4	-12.5	        	        		5.53	1720	32.28	77.6	17.3
6.83	0.4	-12.5	        	        		6.43	2000	43.5	89.8	17.3
7.65	0.4	-12.5	        	        		7.23	2320	60.61	96.1	15.8
8.65	0.4	-12.5	        	        		8.14	2800	95.83	100	9
9.55	0.4	-12.5	        	        		9.15	3440	126.19	100	4.5
10.37	0.4	-12.5	        	        		9.95	3960	153.17	100	4.5
11.26	0.4	-12.5	        	        		10.86	4520	165.69	99.6	9.8
12.17	0.4	-12.5	        	        		11.66	5000	186.72	100	8.3
12.97	0.4	-12.5	        	        		12.57	5480	199.69	100	9
13.77	0.4	-12.5	        	        		13.37	5880	204.61	100	11.3
14.59	0.4	-12.5	        	        		14.17	6240	205.92	99.6	12
15.39	0.4	-12.5	        	        		14.99	6560	206.25	99.6	12.8
16.29	0.4	-12.5	        	        		15.8	6840	204.19	100	16.5
17.1	0.4	-11.7	        	        		16.7	7120	208.72	99.6	18
17.92	0.4	-12.5	        	        		17.5	7280	88.28	25.5	21

Group A:	'115					Group B:	'020			
	RPM	Load	Absolute Pres.	Absolute Pres.			Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization
TIME						TIME				
STAMP	 /min	%	 mbar	 mbar		STAMP	 CF	 CF	 CF	 CF
5.44	1520	26.3	1000	1040		5.02	0	0	0	0
6.32	1520	40.6	1000	1020		5.92	0	0	0	0
7.23	1560	51.9	1000	1040		6.73	1.5	0	0	0
8.14	1640	49.6	1000	1040		7.63	0.8	0	0	0
8.96	1680	53.4	1000	1050		8.54	0	0	0	0
9.85	1840	88.7	1810	1110		9.44	0	0	0	0
10.65	2080	103.8	1990	1260		10.25	0	0	0	0
11.47	2360	123.3	2180	1480		11.07	0	0	0	0
12.27	2760	160.2	2230	1870		11.87	0	0	0	0
13.18	3320	191.7	2360	2390		12.76	0	0	0	0
13.98	3800	191.7	2380	2370		13.58	0	0	0	0
14.88	4360	191.7	2360	2360		14.48	0	0	0	0
15.79	4840	191.7	2320	2260		15.29	0	0	0	0
16.59	5240	191.7	2290	2230		16.19	0	0	0	0
17.4	5600	184.2	2260	2190		16.99	0	0	0	0
18.3	6000	178.2	2190	2140		17.8	0	0	0	0
19.12	6280	171.4	2190	2120		18.7	0	0	0	0
20.03	6560	157.9	2170	2110		19.61	0	0	0	0
20.92	6800	142.1	2160	1990		20.43	0	0	0	0
21.84	7040	154.9	2170	2000		21.44	0	0	0	0
22.64	7200	154.9	2030	2120		22.22	0	0	0	0
23.44	7240	81.2	1170	1810		23.04	0	0	0	0

Many thanks guys!

 

[DPJ]

Boost leak under high load. See 032 - changing value.

 

[Nabraxas]

Cheers DPJ - also, I have attached a log of mine below (before I fixed my boost leak) - am I right in assuming the remap which is on my car is requesting a higher boost level than his?

Wednesday	18	June	2008	16:39:30	
1ML 906 032 		1.8l R4/5VT         0001			
					
	Group A:	'115			
		RPM	Load	Absolute Pres.	Absolute Pres.
	TIME				
Marker	STAMP	 /min	%	 mbar	 mbar
	2.91	1800	26.3	990	1010
	3.31	1840	26.3	990	1000
	3.71	1880	27.8	990	1000
	4.11	1880	25.6	990	1000
	4.51	1920	24.8	990	1000
	4.93	1960	18.8	990	1000
	5.42	2000	17.3	990	1000
	5.82	2000	16.5	990	1000
	6.22	2000	16.5	990	1000
	6.64	2040	16.5	990	1000
	7.14	2040	16.5	990	1000
	7.63	2040	16.5	990	990
	8.03	2080	16.5	990	990
	8.45	2120	19.5	990	990
	8.85	2120	20.3	990	990
	9.25	2120	26.3	1530	980
	9.63	2200	78.9	2480	1030
	10.05	2320	94.7	2450	1170
	10.45	2440	111.3	2520	1330
	10.86	2560	130.1	2550	1500
	11.26	2720	153.4	2550	1690
	11.66	2880	181.2	2550	1980
	12.16	3120	191.7	2550	2360
	12.56	3320	191.7	2550	2540
	12.97	3560	191.7	2550	2540
	13.47	3840	191.7	2550	2530
	13.87	4040	191.7	2550	2430
	14.27	4320	191.7	2550	2350
	14.67	4520	191.7	2550	2310
	15.09	4720	191.7	2550	2270
	15.49	4920	190.2	2530	2130
	15.89	5120	186.5	2500	2090
	16.29	5320	178.9	2450	2050
	16.69	5480	173.7	2400	2010
	17.2	5720	167.7	2350	2000
	17.6	5880	163.9	2320	2000
	18	6000	160.2	2270	1960
	18.41	6160	152.6	2260	1970
	18.8	6240	163.2	2240	1910
	19.21	6400	160.9	2230	1900
	19.71	6520	142.9	2210	1950
	20.11	6640	152.6	2200	1900
	20.51	6760	148.9	2190	1920
	20.92	6840	151.9	2190	1880
	21.42	6960	141.4	2130	1870
	21.82	7040	139.1	1470	2070
	22.22	7040	87.2	1220	1490

 

[DPJ]

Your requested isn't meeting actual from about 5300 onward though..........

 

[Nabraxas]

Yeah, that log was before I fixed my boost leak - need to do some logs now that I have fixed that but the first value is what the ECU is requesting?

 

[DPJ]

Yeah, that log was before I fixed my boost leak - need to do some logs now that I have fixed that but the first value is what the ECU is requesting?

Yes.

 

[Nabraxas]

Thought I would post some updated logs since I have fixed my boost leak...

Group A:	'031				Group B:	'118			
	Lambda Factor	Lambda Factor	Bin. Bits	Bin. Bits		RPM	Temperature	Load	Absolute Pres.
TIME					TIME				
STAMP					STAMP	 /min	°C	%	 mbar
0.44	1.991	1.047	        	        	0.84	1320	42	1.6	1000
1.34	0.789	1	        	        	1.74	1480	39	100	1070
2.14	0.984	0.953	        	        	2.55	1680	37	100	1170
3.05	0.953	0.953	        	        	3.56	1960	34	100	1310
4.06	0.953	0.953	        	        	4.46	2320	33	100	1550
4.97	0.938	0.953	        	        	5.37	2760	32	100	2030
5.77	0.945	0.953	        	        	6.26	3240	30	95.7	2540
6.66	0.938	0.938	        	        	7.08	3760	30	96.1	2540
7.57	0.899	0.906	        	        	7.97	4320	32	99.6	2540
8.37	0.883	0.899	        	        	8.77	4880	33	100	2420
9.19	0.867	0.899	        	        	9.69	5320	35	98	2280
10.09	0.891	0.875	        	        	10.49	5720	36	100	2230
10.9	0.821	0.805	        	        	11.4	6120	39	100	2170
11.8	0.75	0.758	        	        	12.2	6400	40	97.6	2080
12.61	0.75	0.743	        	        	13.01	6680	43	97.6	2060
13.41	0.782	0.766	        	        	13.81	6920	45	100	2150
14.21	0.75	0.789	        	        	14.63	7040	48	0	2320

Group A:	'032				Group B:	'003			
	Lambda	Lambda	Bin. Bits	Bin. Bits		RPM	Mass Flow	Load	Ign. Timing
TIME					TIME				
STAMP	%	%			STAMP	 /min	 g/s	%	 °BTDC
0	0.4	-10.9	        	        	0.4	1160	5.64	4.3	24
0.8	0.4	-10.9	        	        	1.2	1320	21.78	63.1	11.3
1.6	0.4	-10.9	        	        	2.02	1520	26.61	74.9	10.5
2.43	0.4	-10.9	        	        	2.91	1760	32.92	88.6	10.5
3.33	0.4	-10.9	        	        	3.73	2040	41.5	97.6	10.5
4.22	0.4	-10.9	        	        	4.62	2400	60.64	99.2	10.5
5.04	0.4	-10.9	        	        	5.45	2760	91.67	100	6
5.93	0.4	-10.9	        	        	6.33	3280	145.36	100	0.8
6.73	0.4	-10.9	        	        	7.15	3800	156.36	100	2.3
7.65	0.4	-10.9	        	        	8.05	4360	165.86	99.6	7.5
8.56	0.4	-10.9	        	        	9.05	5000	174.39	100	8.3
9.45	0.4	-10.9	        	        	9.97	5440	185.11	100	9.8
10.46	0.4	-10.9	        	        	10.86	5880	190.31	100	11.3
11.26	0.4	-10.2	        	        	11.68	6240	192.61	99.2	16.5
12.08	0.4	-10.2	        	        	12.48	6560	194.56	100	19.5
12.88	0.4	-10.2	        	        	13.28	6800	191.06	100	17.3
13.79	0.4	-10.2	        	        	14.3	7040	186.5	35.7	6

Group A:	'115				Group B:	'020			
	RPM	Load	Absolute Pres.	Absolute Pres.		Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization
TIME					TIME				
STAMP	 /min	%	 mbar	 mbar	STAMP	 CF	 CF	 CF	 CF
0.48	1520	78.2	1620	1020	0	0	0	0	0
1.29	1760	86.5	1760	1140	0.88	0	0	0	0
2.11	2000	97.7	2040	1270	1.69	0	0	0	0
3.01	2360	121.1	2540	1530	2.51	0	0	0	0
4.01	2840	164.7	2550	2060	3.52	0	0	0	0
4.93	3400	191.7	2550	2540	4.41	0	0	0	0
5.82	4040	191.7	2550	2540	5.42	0	0	0	0
6.73	4640	191.7	2550	2520	6.33	0	0	0	0
7.53	5120	184.2	2490	2310	7.13	0	0	0	0
8.33	5600	174.4	2380	2220	7.93	3	0	0	0
9.15	5960	168.4	2280	2190	8.73	3	0	0	0
9.97	6360	156.4	2230	2200	9.55	2.3	0	0	0
10.86	6720	145.9	2200	2210	10.45	2.3	0	0	3
11.87	7040	152.6	1610	2260	11.36	1.5	0	0	3

Strange, my actual boost still isn't meeting requested, though I'm almost certain I don't have a boost leak as we pressurised the system when we were searching for the last boost leak.

 

[DPJ]

Still looks like you've got a bit of a leak under load.

Do a TBA by the way to reset your fuel trims.

 

[Nabraxas]

Should the standard K04 turbo be able to provide that level of boost throughout the rev range or do you think it's requesting above what the K04 can provide?

Could it be leaking from the 007p? Got the green spring in at the moment but I've never seen logs of 115 which request 2550mb of pressure from the turbo?


Also, I have done a graph of the 115 log in Excel and it seems that it can't provide the requested boost between 4,500rpm and 6,500rpm - I've got the standard TIP on the car; if this was collapsing would it show up as being like this on the graph?

 

[DPJ]

I'm not a K04 expert, but I'd say yes, it should provide what your requested is answering. I'd say your boost leak is very slight and only happening above 6250 rpm. Doubtful if your dv leaks, but I'm one of those that recommends a yellow spring.

If your tip was collapsing, I'd expect it to be at higher revs, not mid range..... See what anyone else thinks......

 

[Nabraxas]

Here's the graph I have made in Excel:

Would be nice to hear anyone's comments

Cheers DPJ, as helpful as always !!

 

[Big_daddy]

I'm not a K04 expert, but I'd say yes, it should provide what your requested is answering. I'd say your boost leak is very slight and only happening above 6250 rpm. Doubtful if your dv leaks, but I'm one of those that recommends a yellow spring.

If your tip was collapsing, I'd expect it to be at higher revs, not mid range..... See what anyone else thinks......

Good reason to buy TIP , improves air mass reading, and higher actual boost reading.

 

[Nabraxas]

Well, I've found yet another boost leak under the inlet manifold - I have now repaired this, however, the log of 115 is still showing that actual boost is not meeting requested - very strange as I'm almost certain there's now no boost leak.