Boost problems?

[JONNYVT]

Hello all,

RK696 has kindly just reset my TBA and while there checked the boost for me as I was not sure how well she was performing.

It seems i have a problem as I'm only get max 12psi. Mine is a 06 LCR with REVO 1, Forge DV (yellow spring) and J type N75. Since I fitted the J N75 I the DV seems to have gone a bit quiet so not sure whats going on there. Anyway, here are the VAG.COM figues, your comments / suggestions would be much appreciated:

MARKER STAMP /min % mbar mbar
0.5 2080 14.3 990 1010
0.91 1720 14.3 990 1010
6.85 2360 70.7 1250 1080
7.25 2520 76.7 1310 1180
7.66 2680 89.5 1480 1280
8.06 2920 102.3 1440 1470
8.46 3160 98.5 1380 1670
8.96 3400 89.5 1360 1710
9.36 3720 136.1 2380 1790
9.77 4080 151.9 2360 1870
10.27 4520 149.6 2340 1880
10.67 4840 153.4 2340 1830
11.07 5160 148.9 2310 1820
11.5 5480 148.1 2270 1830
11.98 5800 148.9 2190 1820
12.38 6080 139.8 2140 1810
12.8 6280 141.4 2120 1830
13.2 6360 108.3 990 1650
13.6 5640 30.8 2100 1300
14 4680 133.1 2200 1740
14.4 4800 148.1 2270 1840
14.8 4960 146.6 2290 1870
15.2 5040 148.1 2280 1860
15.6 5280 140.6 1650 1830
16.01 5120 12.8 980 1470
16.51 5080 14.3 980 1140
17 4880 12 980 1060
17.42 4640 12 980 1030
17.82 4440 12 980 1020
18.22 4240 12.8 980 1020
44.68 2320 126.3 1860 1670
45.07 2360 132.3 1850 1740
45.47 2440 134.6 1830 1800
45.87 2480 139.1 1850 1830
46.27 2520 140.6 1920 1840
46.69 2600 143.6 1910 1850
47.19 2640 142.9 1620 1850
47.6 2640 27.1 980 1500
85.3 1520 59.4 980 1020
85.81 1720 63.9 980 1040
86.31 1960 69.9 1210 1100
86.71 2160 85 1390 1160
87.11 2440 97 1570 1280
87.52 2760 112.8 1520 1470
88.02 3200 145.1 1520 1820
88.42 3640 151.9 2350 1890
88.82 4040 154.1 2300 1890
89.24 4480 152.6 2330 1890
89.64 4880 150.4 2320 1860
90.13 5360 150.4 2260 1820
90.64 5800 151.1 2180 1800
91.04 6120 140.6 2160 1810
91.46 6440 138.3 1150 1800
91.95 5560 94 2040 1160
92.34 4800 148.9 2200 1840
92.75 5000 151.1 2220 1840
93.25 5240 145.9 2240 1830
93.67 5480 146.6 2240 1830
94.16 5720 142.9 1790 1830
94.66 5400 24.1 1050 1340
95.17 4600 139.8 2210 1840
95.57 4560 14.3 980 1600
95.97 4560 13.5 980 1190
96.47 4440 12 980 1070
141.03 2720 110.5 1510 1410
141.43 3080 136.1 1730 1690
141.83 3480 148.9 2230 1850
142.24 3920 151.9 2100 1900
142.64 4360 153.4 2090 1870
143.04 4760 149.6 2080 1850
143.54 5200 139.8 1920 1820
143.95 5280 18.8 980 1590
144.35 4200 69.2 2220 1070
144.85 4000 137.6 2200 1780
145.25 4200 152.6 2220 1890
145.76 4440 154.1 2250 1890
146.16 4640 153.4 2270 1880
146.56 4800 148.9 2270 1880
146.96 5000 148.1 2260 1880
147.47 5200 147.4 2260 1850
147.87 5360 143.6 2240 1870
148.27 5560 148.9 2220 1820
148.69 5720 149.6 2190 1840
149.17 5920 151.1 2140 1800
149.58 6080 142.1 2130 1830
150.1 5880 15 980 1370
150.59 4880 137.6 2170 1820
151.09 4840 12.8 980 1470
151.49 4880 14.3 980 1170
151.89 4640 12 980 1080
152.29 4440 12 980 1050
152.7 4240 12.8 980 1040
153.1 4120 12 980 1040

Car seems to pull well but is getting much less paek boost than his modied VRS.

Many thanks JONNYVT (10 Years a member and still lovin it)

 

[JONNYVT]

Yeah sorry the figures look rubbish, i will try a smaller sample!

STAMP /min % mbar mbar
85.3 1520 59.4 980 1020
85.81 1720 63.9 980 1040
86.31 1960 69.9 1210 1100
86.71 2160 85 1390 1160
87.11 2440 97 1570 1280
87.52 2760 112.8 1520 1470
88.02 3200 145.1 1520 1820
88.42 3640 151.9 2350 1890
88.82 4040 154.1 2300 1890
89.24 4480 152.6 2330 1890
89.64 4880 150.4 2320 1860
90.13 5360 150.4 2260 1820
90.64 5800 151.1 2180 1800
91.04 6120 140.6 2160 1810
91.46 6440 138.3 1150 1800

Could I have a leak, could it be the N249?

CHEERS

 

[JONNYVT]

bump

 

[rk696]

STAMP	 /min	%	 mbar	 mbar
85.3	1520	59.4	980	1020
85.81	 1720	63.9	980	1040
86.31	1960	69.9	1210	1100
86.71	2160	85	1390	1160
87.11	2440	97	1570	1280
87.52	2760	112.8	1520	1470
88.02	3200	145.1	1520	1820
88.42	3640	151.9	2350	1890
88.82	4040	154.1	2300	1890
89.24	4480	152.6	2330	1890
89.64	4880	150.4	2320	1860
90.13	5360	150.4	2260	1820
90.64	5800	151.1	2180	1800
91.04	6120	140.6	2160	1810
91.46	6440	138.3	1150	1800

Made it a bit tidier for ya!

 

[rk696]

What's the boost pressure supposed to be on a stage 1 LCR people? The ECU seems to be requesting 20 PSI is, I guess that's about right.

My stage 1 vRS requests around 18 PSI, and reaches it, so I guess the OP has a boost leak.

 

[JONNYVT]

Thanks R, gonna have to have a boost leak check, amybe I should turn off the remap and come round for another blast!!!

 

[choppy69]

I have boost problems too, proper pain in the arse and is doing my head in!!
how did you get that reading from vagcom???

 

[Pyro]

you have to log the car with vagcom doing runs in 4th gear from 2K RPM to redline or as close as, vagcom then reads what the ECU is doing and saying to whatever you have decided to og and shows the results in this case he's logged actual v's requested boost to find out if the car is actually making the requested boost

 

[JONNYVT]

Pyro

Any idea why my car is not producing the boost requested? Have just changed to a N75 J after the old one packed up; it seems to peak earlier but provide less ultimate boost but I cant really tell as I dont have boost gauge.

Do u have VAG figures for ur car to compare against mine, si I can see what it should look like!

Cheers

JP

 

[LEE69]

No good comparing to Sams his is fooked

Maybe you have a worn turbo, like Sam?

Compare it to mine

Wednesday	12	May	2010	19:58:25											
06A 906 032 DE 		1.8L R4/5VT         0001													
															
	Group A:	003				Group B:	115				Group C:	118			
		Idle speed	Air mass in	Throt Angle	Ignit Angle		Engine Speed	Engine Load	Spec. Boost	Actual Boost		Engine Speed	Air Temp In	Boost Dut Cyc	Actual Boost
	TIME	700-820 rpm	2.0-4.5 g/s	0.2-4.0%	0-12 BTDC	TIME	700-6800 RPM	15-150%	990-1800 mbar	<=1800 mbar	TIME	700-6800 RPM	<=110 C	0-100% 	<=1800 mbar
MARKER	STAMP	 /min	 g/s	%	 °BTDC	STAMP	 /min	%	 mbar	 mbar	STAMP	 /min	°C	%	 mbar
	0	1440	22.39	81.6	15	0.4	1440	82	1640	1180	0.8	1480	32	95.3	1190
	1.21	1520	25	85.5	14.3	1.61	1520	85	1670	1210	2.01	1560	32	95.3	1220
	2.53	1280	9.28	1.6	3.8	2.93	1120	18.8	1000	1060	3.33	1080	31	95.3	1020
	3.82	2440	46.86	75.7	25.5	4.24	2360	103.8	1850	1370	4.73	2480	32	100	1580
	5.23	2600	71.11	100	11.3	5.65	2720	141.4	1820	1860	6.14	2840	32	75.3	1910
	6.54	2960	80.33	100	9.8	6.94	3080	139.1	1800	1800	7.34	3160	33	71	1800
	7.76	3280	87.56	100	10.5	8.25	3400	139.8	1750	1770	8.65	3520	33	68.6	1760
	9.05	3600	91.61	100	18	9.45	3720	138.3	1770	1770	9.87	3840	34	71	1790
	10.27	3920	102.64	100	16.5	10.67	4000	139.1	1800	1770	11.17	4160	36	72.9	1790
	11.57	4240	114.03	100	15.8	11.98	4320	139.8	1800	1780	12.38	4440	37	73.3	1790
	12.78	4520	125.08	100	16.5	13.28	4640	142.1	1800	1780	13.68	4720	39	74.1	1780
	14.09	4800	131.19	100	16.5	14.49	4920	139.8	1790	1770	14.89	5000	39	75.7	1790
	15.29	5080	134.92	100	18.8	15.69	5160	141.4	1810	1800	16.09	5240	42	77.6	1790
	16.51	5320	147.94	100	15.8	17.02	5440	143.6	1840	1830	17.52	5520	44	79.6	1820
	17.92	5600	156.94	100	18	18.41	5680	143.6	1820	1810	18.81	5720	45	79.6	1790
	19.23	5800	155.19	100	18	19.63	5880	139.1	1780	1760	20.03	5960	47	79.2	1740
	20.43	6000	159.75	99.6	22.5	20.84	6080	136.1	1750	1770	21.34	6160	48	78.8	1740
	21.74	6200	160.75	100	21.8	22.14	6280	134.6	1740	1730	22.54	6320	49	78.4	1740
	22.94	6080	6.42	4.3	13.5	23.43	5240	12	1000	1130	23.83	4600	44	0	1070
	24.25	4040	7.36	6.3	3	24.75	4880	12	1000	1050	25.15	4880	42	0	1050
	25.55	4800	11	8.2	4.5	25.96	4760	12	1000	1050	26.46	4680	40	0	1050
	26.86	4640	11.44	8.2	3.8	27.26	4600	12	1000	1050	27.66	4560	39	0	1050
	28.07	4520	10.97	8.2	3.8	28.57	4480	12.8	1000	1050	28.97	4400	39	0	1050
	29.48	4360	10.44	7.8	3	29.88	4320	12	1000	1050	30.38	4240	38	0	1050
	30.89	4160	10.31	7.5	3	31.29	4080	12.8	1000	1050	31.69	4000	37	0	1040
	32.19	3920	9.39	7.5	2.3	32.58	3840	12.8	1000	1040	33	3800	36	0	1040
	33.5	3760	9.31	7.1	2.3	33.9	3680	12	1000	1040	34.3	3640	36	0	1040
	34.7	3640	8.94	7.1	2.3	35.11	3600	12.8	1000	1040	35.61	3560	36	0	1040
	36.01	3520	9.08	6.7	2.3	36.41	3480	12	1000	1040	36.82	3440	35	0	1030
	37.32	3400	10.33	8.2	27	37.72	3400	48.1	1000	1040	38.23	3320	33	0	1210
	38.63	3000	8.89	4.7	1.5	39.13	2680	15	1000	1050	39.64	3720	33	0	1090
	40.04	3960	57.31	27.1	32.3	40.44	4040	127.1	1830	1610	40.84	4120	31	76.1	1850
	41.24	4200	116.25	100	13.5	41.75	4280	143.6	1810	1800	42.25	4400	30	74.1	1810
	42.65	4480	123.14	100	14.3	43.05	4560	144.4	1810	1780	43.45	4640	30	75.3	1800
	43.86	4680	126	100	18.8	44.26	4760	142.9	1790	1790	44.66	4840	33	75.7	1790
	45.08	4920	135.28	100	15	45.56	4960	142.1	1790	1790	45.97	5040	35	76.1	1780
	46.37	5080	138.53	100	16.5	46.79	5160	144.4	1810	1790	47.27	5200	37	77.6	1800
	47.69	5280	145.14	99.6	17.3	48.09	5280	81.2	1000	2250	48.49	4640	36	0	1190
	48.89	4080	10.08	6.3	3	49.29	4160	18	1000	1040	49.8	4080	36	90.6	1370
	50.2	4120	104.78	100	10.5	50.6	4160	142.1	1800	1850	51.09	4160	37	71	1790
	51.49	4000	15.86	4.3	3	51.91	3480	11.3	1000	1100	52.4	3440	34	0	1040
	52.81	3360	53.56	26.7	28.5	53.2	3360	120.3	1780	1510	53.62	3360	36	69	189

 

[choppy69]

any chance you could tell me exactly have to get these readings?
does vagcom have to be regsitered?
where do i start i have vagcom but cant find the part of the software to log anything like you guys have?

 

[Pyro]

You need the full version if you go on ross tech site there's help and there's a good section on here for vagcom help etc http://www.seatcupra.net/forums/forumdisplay.php?f=104

Jp as Lee said no good comparing to mine as my turbos old and a bit worn so never produces requested boost but is defiantly better these last few months

Lee on the graphs witch is requested and witch is actual? I need to learn these things lol

Jp have a look at this se if it helps at all http://www.seatcupra.net/forums/showthread.php?t=293436&highlight=suffering really need to update it tho lol there's so many reasons I could be mate leaks are the most frequent and most anoying I had 5 all in all so far in a year and a half lol

 

[LEE69]

I need to learn these things lol

Sam so do i tbh mate

 

[Pyro]

Do you know witch is requested and witch is actual tho?

 

[LEE69]

I'd say the lower is requested.

 

[JONNYVT]

Lee, Is ur Cupra standard or do u have remap?

 

[oldskool]

did you replace the n75 with a version it had previously ie did it have a J before?

 

[LEE69]

Lee, Is ur Cupra standard or do u have remap?

Mines mapped

 

[JONNYVT]

The old N75 was the regular F version, it broke so I changed it for the J version after reading a number of posts about how they were better. May have to buy another F version to see if the valve is the problem, what do u think?

 

[Pyro]

I can't see it causing you lose power throughout the revs if anything it would overboost you then put you in to limp mode