LCR Boost issue? Logs

[jetsetjimbo]

Been out for a little logging. It seemed to be going well given the the temps of ~33c.

Things were fairly busy so I didn't get that many full 2-6.5k runs. One thing I did notice was that as when I started accelerating after lifting off for traffic the boost didn't seem as it should for a 1000-1500rpm or so?

Group B:	'115				Group C:	'002			
	RPM	Load	Absolute Pres.	Absolute Pres.		RPM	Load	Inj. On Time	Mass Flow
TIME					TIME				
STAMP	 /min	%	 mbar	 mbar	STAMP	 /min	%	 ms	 g/s
294.87	2920	40.6	980	1050	294.26	2920	42.1	3.74	21.89
295.97	2960	46.6	980	1070	295.27	2960	46.6	4.42	26.83
296.88	3040	57.1	980	1090	296.28	3000	46.6	4.42	27.22
297.88	3160	98.5	1440	1450	297.18	3040	63.9	6.12	40.89
298.79	3360	110.5	1460	1500	298.19	3240	105.3	9.86	67.08
299.69	3600	145.9	1760	1870	299.09	3440	119.5	10.88	81.19
300.7	3920	149.6	1760	1890	300.1	3720	158.6	15.3	110.06
301.61	4200	145.1	1770	1840	301	4040	148.9	14.62	114.94
302.61	4480	144.4	1780	1820	301.91	4280	145.1	14.28	119.03
303.52	4760	142.1	1790	1800	302.91	4560	139.8	13.94	122.22
304.52	5040	141.4	1790	1770	303.82	4840	141.4	13.94	130.69
305.43	5280	142.1	1810	1800	304.82	5120	139.8	13.94	137.25
306.33	5520	139.1	1830	1860	305.73	5360	140.6	13.94	145.5
307.34	5760	141.4	980	1820	306.63	5560	141.4	14.28	154.86
308.24	4520	12.8	980	1120	307.64	5480	12	1.02	0
309.25	4280	12	980	1030	308.55	4480	12	0	8.72
310.36	4120	12.8	980	1020	309.64	4200	12	0	9.47
311.26	4000	12	980	1020	310.66	4080	12	0	9.86
312.17	3880	12.8	980	1030	311.56	3960	12	0	9.64
313.07	3800	75.9	1720	1030	312.47	3800	12.8	0	9.36
314.08	4000	154.9	1780	1940	313.37	3880	101.5	10.2	98.75
[COLOR="Red"]314.98	4080	104.5	1800	1430	314.38	4040	62.4	4.76	4.64
315.89	4280	146.6	1800	1930	315.28	4120	139.8	14.28	121.75
316.89	4480	146.6	1800	1860	316.19	4320	147.4	14.62	120.69
317.8	4640	116.5	1810	1550	317.19	4520	141.4	13.94	125.08
318.8	4760	117.3	1810	1570	318.1	4680	117.3	11.56	106.39
319.81	4920	160.2	1820	2020	319.21	4840	117.3	11.56	107.67
320.71	5080	147.4	1820	1840	320.11	5000	151.9	15.3	140.03
321.62	5200	139.8	1840	1870	321.02	5120	143.6	14.28	142.89
322.52	4880	14.3	980	1230	321.92	5240	143.6	14.28	145.25[/COLOR]

Everything seemed fine on the way home with this:

Group B:	'115				Group C:	'002			
	RPM	Load	Absolute Pres.	Absolute Pres.		RPM	Load	Inj. On Time	Mass Flow
TIME					TIME				
STAMP	 /min	%	 mbar	 mbar	STAMP	 /min	%	 ms	 g/s
654	2520	66.9	1170	1100	653.41	2440	42.1	3.74	20.72
655.02	2680	94	1470	1340	654.31	2560	78.9	7.14	43.61
656.02	2880	121.8	1630	1530	655.32	2760	100	9.52	57.47
656.93	3120	137.6	1710	1690	656.32	2960	127.8	11.56	81.39
657.93	3400	138.3	1760	1740	657.23	3200	139.1	12.58	86.86
658.84	3640	139.8	1770	1750	658.23	3480	141.4	13.6	93.25
659.74	3880	141.4	1770	1760	659.14	3720	141.4	13.6	101.03
660.65	4080	143.6	1770	1770	660.04	3960	141.4	13.26	108.92
661.55	4320	139.8	1780	1770	660.95	4160	142.1	13.94	114.22
662.56	4560	137.6	1790	1800	661.85	4400	142.9	13.94	121.42
663.46	4760	137.6	1790	1800	662.86	4640	141.4	14.62	122.94
664.37	4960	140.6	1790	1750	663.76	4840	142.1	13.94	130.11
665.37	5160	139.1	1800	1800	664.67	5040	141.4	14.28	137.06
666.28	5400	145.1	1820	1790	665.68	5240	138.3	13.94	141.58
667.28	5560	145.1	1830	1820	666.58	5440	143.6	14.28	150.31
668.2	5760	136.8	1820	1850	667.59	5640	145.9	14.62	153.92
669.1	5960	140.6	1780	1810	668.49	5800	138.3	13.94	158.67
670.11	6120	144.4	1750	1730	669.5	6000	145.9	15.3	159.19

 

[Feel]

Can you log 118 for N75 duty cycle

 

[jetsetjimbo]

Will do this evening.

I was wondering if it could be N75...

 

[Feel]

It might be...

I wondered some more this morning if it was just because of the temperature

 

[jetsetjimbo]

Maybe... I think some of the hoses from the N75 may now be on the egine side of the TIP rather than the airbox side.

Everything was all back together before I realised and I didn't have any spare clips to re-route. I did check the path of the hose and it seemed fine but maybe the additional heat could effect it?

 

[jetsetjimbo]

Been out again tonight:

Group A:	'115				Group B:	'118				Group C:	'020			
	RPM	Load	Absolute Pres.	Absolute Pres.		RPM	Temperature	Load	Absolute Pres.		Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization
TIME					TIME					TIME				
STAMP	 /min	%	 mbar	 mbar	STAMP	 /min	°C	%	 mbar	STAMP	 CF	 CF	 CF	 CF
147.54	1720	77.4	1420	1070	146.94	1600	32	0	1000	147.24	0	0	0	0
148.54	1960	89.5	1420	1220	147.93	1800	30	100	1130	148.24	0	0	0	0
149.55	2040	18.8	990	1210	148.85	2040	29	66.3	1280	149.15	0	0	0	0
150.55	1880	89.5	1660	1210	149.85	1760	27	100	1090	150.24	0	0	0	0
151.46	2080	102.3	1700	1350	150.86	1960	27	100	1260	151.16	0	0	0	0
152.37	2320	121.8	1750	1550	151.75	2160	27	100	1420	152.07	0	0	0	0
153.37	2640	141.4	1740	1800	152.67	2400	27	72.9	1650	152.97	0	0	0	0
154.38	3000	143.6	1700	1770	153.67	2720	27	63.9	1800	154.08	0	0	0	0
155.38	3360	141.4	1730	1760	154.68	3120	26	61.6	1780	154.98	0	0	0	0
156.29	3640	141.4	1750	1770	155.69	3440	26	61.6	1760	155.99	0	0	3	3
157.3	4000	141.4	1750	1780	156.59	3760	26	62	1770	156.89	0	0	3	3
158.2	4280	142.1	1770	1780	157.6	4120	27	61.2	1770	157.9	0	0	2.3	2.3
159.11	4600	142.1	1790	1770	158.5	4400	27	61.2	1800	158.8	0	0	2.3	2.3
160.01	4880	141.4	1790	1820	159.41	4680	27	62	1780	159.71	0	0	1.5	1.5
161.02	5120	136.1	1800	1830	160.41	4960	29	62	1770	160.71	0	0	1.5	1.5
161.92	5360	145.1	1820	1800	161.32	5200	29	62.4	1800	161.62	0	0	0.8	0.8
162.93	5560	144.4	1830	1840	162.32	5440	30	63.5	1820	162.63	0	3	0.8	0.8
163.83	5720	144.4	1820	1830	163.23	5640	31	63.1	1840	163.54	0	3	0	0
164.84	5920	145.1	1800	1820	164.13	5800	32	63.1	1830	164.44	0	2.3	3	0
165.84	6040	130.8	1750	1810	165.15	5960	33	62	1830	165.54	0	2.3	3	0
166.75	6200	140.6	1740	1720	166.16	6120	34	59.6	1740	166.46	0	1.5	2.3	0
167.65	6320	137.6	1730	1750	167.06	6240	35	58.8	1750	167.36	0	1.5	2.3	0
168.56	5080	100.8	1810	1340	167.97	6280	36	0	1660	168.26	0	0	0	0
169.56	5200	147.4	1820	1850	168.86	5120	36	63.5	1770	169.26	3	0	3	3

Boost seemed ok tonight.

There so seem to be places where requested is not meeting actual though with the N75 at 100%.

Some 3 CFs as well! A Revo will surely push those up... are these partly a result of the heat?

 

[Feel]

S'fine - I will be at 100% that low down, but it's usually more like 95% higher up, although it is meeting requested quite happily.

 

[jetsetjimbo]

Cool! Idle stabilization is fine too?

Will improving the airflow to the ICs help with this?

 

[Feel]

Actually, wait a minute are you remapped??

 

[jetsetjimbo]

Nope.

 

[Feel]

Ah, no it's absolutely fine then.

Did you service that DV you got before you fitted it? Just wondering if it sticking a little bit. It might explain that first log, then the other logs being fine (pretty good in fact) and the 1,000 rpm lag.

I sometimes get a lag if I come on boost, but not fully then have to back off a bit, then floor it. Seems more apparent when it gets hotter. But it doesn't last for 1,000rpm, more like a split second.

 

[jetsetjimbo]

I didn't but Phil did mention that it'd recently been done. Does the service just involve greasing it?

The 1000rpm lag is the issue I experienced in the first place?

Befroe I went out and did the logging last night I re-routed the hose from the N75 to the turbo around the outside of the TIP (as it is as standard) away from the block. Do you think that could've had anything to do with the lag on the first run?

It's something that I've not experienced before or since.

.... then the other logs being fine (pretty good in fact)

Hopefully the DV, TIP, chrage pipe and smoothed AB have helped even with the stock map.

 

[Feel]

Unless the N75 hose was pinched - I'm fairly sure the wastegate is opened by a vacuum, so if the car was opening the wastegate when you lifted off, then trying to close it again but couldn't because the pipe was pinched... Anyway, it looks fine now...

Hopefully the DV, TIP, chrage pipe and smoothed AB have helped even with the stock map.

Does look pretty good. With the breathing mods I've done I've often wondered how much better than stock mine is, with Revo off.

I think it was my 50k service I had Revo off and I logged it because I had a fault code and I wanted to be sure it was still there when I dropped it off (dealer still told me that there were no faults logged when I picked the car up, but that's a different story).

IIRC it was flowing 184g/sec with the Revo off, and at the time it was doing 195g/sec with it on! N75 issue though. I think a stock LCR is generally considered to flow 160-165 g/sec so maybe there's some improvements to be made on breathing mods, even when not remapped.

Can you log 003 when you get chance.

 

[jetsetjimbo]

Will do.

Looking at the g/s on the first runs i'm not breaking 160 g/s although I recall pre mods it was upto ~163.

I think one thing that's really hampering it still is the fact that I'm still using the standard air feed and filter - waiting for a scoop, filter and ducting...

I think I'm going to get all the mods sone pre-remap to see how much difference the mods make on a stock map.

 

[jetsetjimbo]

Can you log 003 when you get chance.

Group A:	'003			
	RPM	Mass Flow	Load	Ign. Timing
TIME				
STAMP	 /min	 g/s	%	 °BTDC
516.82	2280	40	25.5	19.5
517.73	2640	50.53	27.5	22.5
518.73	3000	58.19	29.4	27.8
519.64	3400	78.47	98.8	24.8
520.54	3880	118.33	100	12.8
521.65	4480	127.17	100	14.3
522.55	4960	137.47	100	12
523.46	5440	155.47	100	17.3
524.37	5880	163.81	100	13.5

also

Group A:	'003			
	RPM	Mass Flow	Load	Ign. Timing
TIME				
STAMP	 /min	 g/s	%	 °BTDC
631.27	2560	58.33	98.8	21.8
632.28	2880	74.78	100	14.3
633.18	3200	88.11	100	20.3
634.19	3560	96.89	100	18.8
635.19	3880	105.19	100	15
636.1	4160	114.36	100	16.5
637.21	4520	124.42	100	15.8
638.11	4800	132	100	17.3
639.12	5120	140.22	100	15
640.12	5400	150.03	100	15.8
641.03	5640	157.86	100	16.5
642.04	5920	163.25	100	12.8
642.94	6120	161	100	20.3
643.95	6320	160.83	99.2	19.5
644.86	6440	160.28	100	20.3

Got the green panel and ducting (ish) in there now.

 

[jetsetjimbo]

bump

IIRC it was flowing 184g/sec with the Revo off, and at the time it was doing 195g/sec with it on! N75 issue though. I think a stock LCR is generally considered to flow 160-165 g/sec so maybe there's some improvements to be made on breathing mods, even when not remapped.

Don't think I'm going to get anywhere near that though at stock. Seems to max out at about 163 and that's with the green panel, smoothing and ducting.

 

[Feel]

Well, yours is hitting 160-165 so is okay for a stock LCR.

You could try revving it though