Stage 2 /2 + issues with logs

[cheungy]

^^^^^^
Agreed 100%. I didn't realize you were more concerned about the noise than the valve.

Also agree 100%

About the Diverter valve, REV D use to be the main one as it's piston driven and will last longer etc...

I currently run the Rev G Valve and it's been proven @top-end the boost is holding better than Rev D (slight boost leak)

I would say for cars with bigger turbo (K04) to go Rev G and for (K03) to have Rev D, harder to swap the valves but since it's next to the turbo it should survive longer against the heat...imo

 

[belfastchris45]

Cheers guys. I have been reading up loads on this. It seems flutter is normal of the car continues to pull. In my case the car is definitely not pulling correctly while fluttering. If you look at the looks at around 3700rpm the car is requesting 2540mbar. 1.5bar give or or take. But the car is actually boosting to 2600mbar in some cases 2700mbar (1.6,1.7 bar). Does the k04 boost this high. Also is it normal for the turbo to boost more than requested ?

Also what is the limit between fuel rail pressure requested and actual ?

Im going to dO some more logs today and graph the data. May have a new map to try

 

[LeonCR]

i would first remove the forge valve and do some more logs that way we can see whats really going on

 

[belfastchris45]

i would first remove the forge valve and do some more logs that way we can see whats really going on

I took it off last night so will religion this afternoon. What r the best blocks to measure ?

 

[Marshall]

Flutter is normal if your not losing power.
But in your case your fluttering and losing power. The flutter is boost regulation so you'd think this is preventing the car going into overboost so therefore protecting the engine.
Mine flutters only in 3rd and 4th gear from approx 3500rpm until approx 4100rpm.
Last time I logged mine the actual boost was much higher than requested but I don't remember seeing boost figures that high!
As for fuel pressure the vcds figures say within 5 bar which when I logged mine was always less than this usually 2 or 3 bar at most.
Might be worth checking fuel pressure from the low pressure pump via vcds and make sure it doesn't drop below 3.5 bar when driving hard.
It maybe your losing fuel pressure so the ecu is dumping boost as the fuel request isn't being hit?

 

[belfastchris45]

Flutter is normal if your not losing power.
But in your case your fluttering and losing power. The flutter is boost regulation so you'd think this is preventing the car going into overboost so therefore protecting the engine.
Mine flutters only in 3rd and 4th gear from approx 3500rpm until approx 4100rpm.
Last time I logged mine the actual boost was much higher than requested but I don't remember seeing boost figures that high!
As for fuel pressure the vcds figures say within 5 bar which when I logged mine was always less than this usually 2 or 3 bar at most.
Might be worth checking fuel pressure from the low pressure pump via vcds and make sure it doesn't drop below 3.5 bar when driving hard.
It maybe your losing fuel pressure so the ecu is dumping boost as the fuel request isn't being hit?

You could be right

What's the best blocks to log

 

[Marshall]

Sorry I don't know the numbers I just went down through the list and selected what I wanted. 230 springs to mind

 

[belfastchris45]

new logs done today. Temp around 9 and starting mbar 1000. 4th gear pull this time

Group 1 - Field 0	TIME	Group 14 - Field 2	TIME	Group 31 - Field 0	Group 54 - Field 2	Group 54 - Field 3	TIME	Group 101 - Field 2	Group 103 - Field 0	Group 114 - Field 3	Group 115 - Field 2	Group 115 - Field 3	TIME	Group 230 - Field 0	TIME	Group 230 - Field 1	
Engine Speed	STAMP	Misfire - Sum Counter	STAMP	Lambda Sensor - Current Value	Sender 2 for - Acc. Pedal Pos.	Throttle Drive - Angle Sensor 1	STAMP	Median - injection timing	Current - Fuel Pressure	Wastegate (N75) - Duty Cycle	Boost Pressure - (specified)	Boost Pressure - (actual)	STAMP	Rail Pressure - (specified)	STAMP	Rail Pressure - (actual)	
 /min					 %	 %		 ms	 bar	 %	 mbar	 mbar		 bar		 bar	
2160	0.01	0	0.1	0.98	23.9	11	0.2	1.28	5.3	0	910	1080	0.43	78.64	0.43	79.2	
2280	0.53	0	0.62	0.92	99.6	89.4	0.72	2.81	5.22	94.9	2250	1190	0.95	87.37	0.95	86.33	
2440	1.04	0	1.14	0.99	99.6	99.6	1.24	3.83	5.28	94.9	2290	1490	1.48	95.48	1.48	96.32	
2640	1.57	0	1.67	0.97	99.6	99.6	1.77	4.84	5.35	91.8	2420	1870	1.98	101.7	1.98	102.44	
2880	2.07	0	2.17	0.95	99.6	99.6	2.27	6.12	5.3	81.2	2520	2410	2.5	104.83	2.5	105.93	
3160	2.6	0	2.7	0.89	99.6	99.6	2.79	8.16	5.25	59.6	2500	2760	3.02	104.84	3.02	106.72	
3400	3.11	0	3.16	0.84	99.6	99.6	3.3	8.93	5.29	57.3	2460	2680	3.54	104.84	3.54	107.66	
3680	3.63	0	3.73	0.82	99.6	99.6	3.83	8.42	5.33	53.7	2440	2560	4.07	104.84	4.07	107.29	
3920	4.16	0	4.26	0.82	99.6	99.6	4.36	7.91	5.3	52.2	2440	2460	4.59	104.84	4.59	105.3	
4160	4.69	0	4.79	0.81	99.6	99.6	4.89	7.91	5.31	52.2	2470	2450	5.13	104.84	5.13	104.67	
4360	5.22	0	5.32	0.82	99.6	99.6	5.42	7.65	5.24	53.3	2490	2450	5.65	104.84	5.65	104.75	
4480	5.73	0	5.83	0.82	99.6	99.6	5.94	7.91	5.14	54.5	2500	2450	6.17	104.8	6.17	105.25	
4720	6.26	0	6.36	0.84	99.6	99.6	6.47	8.16	5.07	56.5	2490	2480	6.7	103.4	6.7	100.7	
4920	6.84	0	6.88	0.79	99.6	99.6	6.98	7.65	5.14	57.3	2500	2460	7.2	101.42	7.2	115.56	
5120	7.29	0	7.39	0.85	99.6	99.6	7.5	8.93	5.24	59.6	2500	2480	7.72	100.66	7.72	116.58	
5280	7.81	0	7.91	0.79	99.6	99.6	8	10.71	4.9	61.6	2510	2540	8.23	100.66	8.23	122.01	
5520	8.33	0	8.42	0.8	99.6	99.6	8.53	11.22	4.67	62.7	2150	2550	8.76	100.66	8.76	115.44	
5720	8.85	0	8.95	0.91	99.6	97.6	9.06	11.48	4.96	60.4	2050	2480	9.29	100.66	9.29	69.55	
5960	9.39	0	9.48	0.85	99.6	95.7	9.59	9.95	4.81	64.3	1920	2470	9.82	100.66	9.82	83.01	
6040	9.97	0	10.01	0.82	99.6	52.2	10.12	9.44	4.88	63.9	1730	2760	10.36	100.8	10.36	89.23	
6160	10.5	0	10.54	0.74	99.6	31.4	10.65	5.36	5.12	63.1	1760	2700	10.89	107.26	10.89	125.14	
6320	11.04	0	11.07	0.89	99.6	32.5	11.18	5.61	5.13	63.9	1840	2680	11.41	115.13	11.41	119.17	
6480	11.56	0	11.61	0.84	99.6	34.9	11.71	6.38	4.96	64.3	1900	2660	11.95	121.64	11.95	127.27	
6680	12.08	0	12.13	0.8	99.6	36.5	12.24	5.87	4.89	64.7	1020	2660	12.48	118.04	12.48	126.91

Marker	TIME	Group 3 - Field 0	Group 3 - Field 1	Group 3 - Field 2	Group 3 - Field 3	Group 20 - Field 0	Group 20 - Field 1	Group 20 - Field 2	Group 20 - Field 3	Group 31 - Field 0	Group 114 - Field 3	Group 115 - Field 2	Group 115 - Field 3	
	STAMP	Engine Speed	Intake Air Mass	Throttle Drive - Angle Sensor 1	Ignition - Timing Angle	Cylinder 1 Ignition - Angle Delay	Cylinder 2 Ignition - Angle Delay	Cylinder 3 Ignition - Angle Delay	Cylinder 4 Ignition - Angle Delay	Lambda Sensor - Current Value	Wastegate (N75) - Duty Cycle	Boost Pressure - (specified)	Boost Pressure - (actual)	
		 /min	 g/s	 %	 °BTDC	°KW	°KW	°KW	°KW		 %	 mbar	 mbar	
	0.16	2120	34.25	34.9	11.3	0	0	0	0	0.95	0	1960	1070	
	0.42	2120	44.25	97.6	17.3	0	0	0	0	1.05	94.9	2310	1140	
	0.71	2200	49.03	99.6	18	0	0	0	0	0.98	94.9	2270	1250	
	0.97	2240	56.28	99.6	15.8	0	0	0	0	0.97	94.9	2280	1380	
	1.26	2320	65.47	99.6	9	-3	0	-3	-3	0.98	94.9	2320	1510	
	1.53	2400	75.14	99.6	6.8	-3	0	-3	-3	0.97	94.9	2380	1650	
	1.82	2480	86.89	99.6	2.3	-3	0	-3	-3	0.95	94.9	2420	1820	
	2.14	2520	100.56	99.6	0	-3	0	-3	-3	0.95	94.5	2510	2020	
	2.42	2640	112.58	99.6	-2.3	-3	0	-3	-3	0.93	89.8	2520	2260	
	2.69	2800	137.42	99.6	-3	-3	0	-3	-3	0.91	85.1	2540	2500	
	2.95	2920	153.33	99.6	0	-3	0	-3	-3	0.91	69.4	2540	2740	
	3.24	3080	168.31	99.6	0	-3	0	-3	-3	0.84	59.6	2540	2800	
	3.5	3240	156.81	99.6	-0.8	-3	0	-3	-3	0.81	58.8	2520	2700	
	3.78	3280	175.14	99.6	-3	-2.3	0	-2.3	-2.3	0.81	57.6	2500	2620	
	4.04	3400	157.5	99.6	0	-2.3	0	-2.3	-2.3	0.81	56.9	2480	2580	
	4.32	3520	162.69	99.6	0.8	-2.3	0	-2.3	-2.3	0.83	56.1	2470	2530	
	4.59	3600	155.53	99.6	-1.5	-2.3	0	-2.3	-2.3	0.83	55.7	2470	2480	
	4.87	3760	164.06	99.6	1.5	-1.5	0	-1.5	-1.5	0.82	55.7	2460	2470	
	5.13	3840	167.03	99.6	0.8	-1.5	0	-1.5	-1.5	0.82	55.7	2470	2470	
	5.41	4000	175.72	99.6	1.5	-1.5	0	-1.5	-1.5	0.82	55.7	2480	2480	
	5.68	4080	183	99.6	1.5	-1.5	0	-1.5	-1.5	0.83	55.7	2500	2480	
	5.96	4200	185.69	99.6	1.5	-0.8	0	-0.8	-0.8	0.83	56.1	2500	2490	
	6.22	4320	190.92	99.6	3	-0.8	0	-0.8	-0.8	0.85	56.5	2520	2470	
	6.5	4480	195.42	99.6	2.3	-0.8	0	-0.8	-0.8	0.85	56.9	2540	2460	
	6.81	4560	205.22	99.6	2.3	-0.8	0	-0.8	-0.8	0.77	58	2530	2470	
	7.1	4680	208	99.6	2.3	-0.8	0	-0.8	-0.8	0.84	58.8	2530	2480	
	7.37	4760	214.39	99.6	3	-0.8	0	-0.8	-0.8	0.9	59.2	2520	2470	
	7.63	4880	221.53	99.6	3	0	0	0	0	0.84	60	2520	2500	
	7.92	5000	222.28	99.6	6	0	0	0	0	0.77	60.8	2520	2520	
	8.18	5080	227.39	99.6	6	0	0	0	0	0.76	61.6	2530	2500	
	8.46	5200	230.06	99.6	6.8	0	0	0	0	0.88	63.5	2530	2520	
	8.72	5320	235.22	99.6	7.5	0	0	0	0	0.91	64.7	2540	2540	
	9.01	5440	238.22	99.6	8.3	-3	-3	0	0	0.9	65.5	2450	2560	
	9.28	5640	243.92	99.6	9	-3	-3	0	0	0.84	67.1	2440	2560	
	9.56	5560	252.94	98	6	-3	-3	-3	0	0.9	69.8	2210	2560	
	9.84	5680	250.61	97.3	6	-3	-6	-3	-3	0.83	67.5	2190	2580	
	10.14	5800	252.69	96.9	6	-3	-6	-3	-3	0.83	70.2	2170	2540	
	10.46	5840	247.97	47.1	6	-3	-6	-3	-3	0.8	67.5	2080	2620	
	10.75	5920	226.56	36.5	9	-3	-6	-3	-3	0.82	63.5	1950	2720	
	11.04	6000	196.08	32.9	13.5	-3	-6	-3	-3	0.79	61.6	1820	2620	
	11.31	6040	210.72	33.3	12	-3	-6	-3	-3	0.76	64.7	1840	2600	
	11.6	6120	214.56	34.5	9	-2.3	-5.3	-2.3	-6	0.82	64.7	1900	2640	
	11.87	6200	222.39	36.5	12.8	-5.3	-5.3	-2.3	-6	0.89	65.1	1960	2640	
	12.15	6240	232.28	38.4	9	-5.3	-5.3	-2.3	-6	0.79	65.5	2050	2640	
	12.42	6360	253.83	73.3	5.3	-5.3	-5.3	-2.3	-6	0.8	67.8	2320	2470	
	12.7	6400	254.53	98.8	9.8	-4.5	-4.5	-1.5	-5.3	0.8	69.4	2290	2350	
	12.98	6440	260.17	99.6	6.8	-4.5	-4.5	-1.5	-5.3	0.8	69.4	2240	2350	
	13.3	6520	266.5	99.6	10.5	-4.5	-4.5	-1.5	-5.3	0.81	69.4	2260	2340	
	13.52	6600	261.81	99.6	7.5	-4.5	-4.5	-1.5	-5.3	0.8	69.8	2290	2320	
	13.85	6600	260.64	99.6	8.3	-3.8	-3.8	-0.8	-4.5	0.8	70.2	2250	2310	
	14.13	6720	257.44	98.4	8.3	-3.8	-3.8	-0.8	-4.5	0.91	70.2	2280	2300

 

[belfastchris45]

some graphs

Fuel requested and actual. Big difference but i dont feel any drop at all when the logs show pressure dropping

boost specified and actual

 

[Lee M]

Sounds to me like valve is actuating to maintain boost pressure.


Sent from my iPhone using Tapatalk

 

[belfastchris45]

2 quick vids. Does it sound normal.

http://i116.photobucket.com/albums/...1-B0A7-F58699F21AF2-1772-0000007C00F0C419.mp4

http://i116.photobucket.com/albums/...0-BAD7-A92755142F83-1751-0000007BC8C5A201.mp4