Boost problem - Logs Attached

[Chri$]

Hi Guys,

Wondering if you can help.

I have a Leon Cupra 1.8T 180 with Performance Torque remap and seem to be having some boost (i think) problems. Around 3200rpm i can hear and feel a flat spot, the boost sounds like it drops, then comes back about 3800rpm. I think the same happens around 4200rpm too. Seems to be surging maybe???

Anyway, just done some logs in the really hot weather, see what you think.

Much appreciated.

Thursday	2	July	2009	20:07:45				
06A 906 032 MJ		1.8L R4/5VT         0003						
								
	Group A:	'118				Group B:	'032	
		Engine Speed	Air Temp In	Boost Dut Cyc	Actual Boost		Idle O2 Adapt	Run O2 Adapt
	TIME	700-6800 RPM	<=110 C	0-100% 	<=1800 mbar	TIME	-10.1	-10.1
Marker	STAMP	 /min	°C	%	 mbar	STAMP	%	%
	85.69	2400	41	95.3	1430	86.35	1.7	-10.9
	86.9	2760	43	95.3	1880	87.51	1.7	-10.9
	88.11	3120	45	83.5	2140	88.72	1.7	-10.9
	89.31	3480	47	77.6	1910	89.81	1.7	-10.9
	90.42	3840	49	78	1940	90.93	1.7	-10.9
	91.62	4160	51	79.2	1980	92.2	1.7	-10.9
	92.74	4480	54	78	1910	93.34	1.7	-10.9
	93.85	4760	57	78	1840	94.45	1.7	-10.9
	94.95	5000	59	77.6	1800	95.55	1.7	-10.9
	96.16	5240	62	76.5	1750	96.66	1.7	-10.9
	97.36	5480	63	75.7	1720	98.03	1.7	-10.9
	98.6	5680	64	74.5	1670	99.17	1.7	-10.9
	99.68	5840	66	73.7	1650	100.18	1.7	-10.9
	100.69	6000	66	73.3	1630	101.3	1.7	-10.9

Thursday	2	July	2009	19:59:11				
06A 906 032 MJ		1.8L R4/5VT         0003						
								
	Group A:	'115				Group B:	'031	
		Engine Speed	Engine Load	Spec. Boost	Actual Boost		Lambda Factor	Lambda Factor
	TIME	700-6800 RPM	15-150%	990-1800 mbar	<=1800 mbar	TIME		
Marker	STAMP	 /min	%	 mbar	 mbar	STAMP		
	87.7	2240	106.8	1770	1310	88.21	0.992	0.961
	88.82	2480	139.1	1760	1690	89.5	0.836	0.789
	90.1	2760	145.9	1790	1810	90.63	0.75	0.743
	91.22	3040	148.1	1830	1850	91.83	0.75	0.758
	92.35	3320	149.6	1830	1830	92.93	0.75	0.75
	93.44	3600	151.1	1840	1830	93.94	0.75	0.758
	94.54	3920	149.6	1890	1860	95.07	0.75	0.774
	95.78	4240	146.6	1880	1880	96.41	0.75	0.782
	96.96	4560	142.9	1840	1850	97.57	0.75	0.75
	98.18	4840	141.4	1810	1810	98.79	0.75	0.719
	99.37	5040	139.8	1780	1790	99.88	0.75	0.719
	100.49	5200	136.8	1740	1750	101.12	0.75	0.711
	101.78	5360	133.8	1710	1710	102.44	0.75	0.711
	102.99	5560	132.3	1670	1690	103.51	0.75	0.711
	104.1	5720	126.3	990	1610	104.71	0.828	0.938
	105.31	5520	12	990	1050	105.91	1.991	1.047
	106.42	5360	12	990	1040	107.01	1.991	1.047
	107.7	5320	118.8	1740	1500	108.3	0.992	1
	108.83	5560	133.8	1570	1690	109.36	0.75	0.665
	109.94	5720	121.8	1540	1550	110.53	0.75	0.672
	111.04	5880	124.8	1610	1560	111.65	0.75	0.688
	112.25	6040	125.6	1610	1600	112.87	0.75	0.68

Thursday	2	July	2009	19:55:13						
06A 906 032 MJ		1.8L R4/5VT         0003								
										
	Group A:	'003				Group B:	'020			
		Idle speed	Air mass in	Throt Angle	Ignit Angle		Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization
	TIME	700-820 rpm	2.0-4.5 g/s	0.2-4.0%	0-12 BTDC	TIME				
Marker	STAMP	 /min	 g/s	%	 °BTDC	STAMP	 CF	 CF	 CF	 CF
	0.01	2320	8.36	6.7	24.8	0.6	0	0	0	0
	1.2	1960	4.92	3.9	3	1.81	0.8	1.5	2.3	3
	2.4	1360	24.42	78.4	11.3	3.11	3.8	0	1.5	2.3
	3.68	1560	29.86	89.8	8.3	4.22	3	0	0.8	1.5
	4.82	1760	36.25	100	10.5	5.43	0.8	0	0	0
	6.02	2000	43.86	100	9	6.53	0	0	0	3
	7.03	2200	56.33	100	8.3	7.63	3	0	0	3
	8.14	2440	70.94	100	3.8	8.81	3	0	0	2.3
	9.42	2760	88.08	100	5.3	9.96	2.3	3	3	5.3
	10.55	3120	109.69	100	3.8	11.06	5.3	6	6	8.3
	11.66	3440	105.39	100	5.3	12.16	5.3	6	6	8.3
	12.76	3680	115.78	100	6	13.37	5.3	5.3	6	7.5
	13.87	3960	124.89	100	6	14.47	4.5	5.3	8.3	10.5
	15.16	4280	128	100	3.8	15.77	7.5	5.3	8.3	10.5
	16.28	4520	130.78	100	6	16.91	7.5	4.5	7.5	9.8
	17.49	4720	133.53	100	6.8	18.01	6.8	4.5	7.5	9
	18.61	4960	139.97	100	12.8	19.22	6.8	7.5	6.8	9
	19.8	5200	147.06	100	11.3	20.32	6	7.5	6.8	8.3
	21	5360	141.33	100	11.3	21.6	6	6.8	6	8.3
	22.13	5520	143.47	100	12	22.73	5.3	6.8	6	7.5
	23.32	5680	148.22	100	12	23.85	5.3	6	5.3	7.5
	24.44	5800	147	99.6	15.8	25.05	4.5	6	5.3	6.8
	25.66	5920	148.47	99.6	15.8	26.24	4.5	5.3	4.5	6.8
	26.81	6080	149.19	99.6	17.3	27.47	4.5	8.3	4.5	6
	28.07	6240	151.67	100	17.3	28.68	3.8	8.3	3.8	9

 

[DPJ]

Boost looks fine.

Maf readings look abysmal though......

 

[wild willy]

The weather is so hot at the moment and coupled with you running stock intercoolers 60 degrees intake temps is going to kill your timing through heat soak. Thats probably why your CF's are quite high. Sort out a fmic and she should feel much stronger for it.

 

[Chri$]

Boost looks fine.

Maf readings look abysmal though......

You're not wrong there!. The most i've ever logged since remap was 161g/s It had a new maf about a year ago after it completely died and threw a fault code.

I'm quite concerned about the CF's it's pulling though???

Any idea? Hasn't had plugs for 30k miles or so so maybe???

Cheers

 

[wild willy]

To be fair a 210 bhp LCR in stock form will pull approx 160 g/sec of mass air @ 0.7 bar red line.
So your remapped car is only 0.6 bar @ red line and not far off the above figs. The duty cycle looks like it could maintain stronger boost at redline also.

This heat won't do any favours for your mass air flow since air density decreases with an increase in temp.

 

[Chri$]

Tell me about it ... this heat is killing me ... the air con has gone tits up today too.

Called in to Kwik Fit for a regas and it failed the pressure test so i have a leak somewhere. Need to get that sorted quickly cos i'm off on a drive to the stelvio and round italy in a few weeks ... i'll be dead without air con!

 

[Big_daddy]

ue remawhat year leon do you have? what air filter do you have?
my old leon made 166 g/s and 169 with tip on P torque remap,

 

[Chri$]

2003 Cupra. Green panel. Forge 007p.

 

[Big_daddy]

How long have you had your remap? mines took a few weeks for it to adapt. Give good kick around 3rpm, i would recommned typhoon filters as it is feed from the arch also tip for more air flow.

 

[Chri$]

Had it on for a few months now but i don't think it's ever been running right. Had coil packs go pretty much straight away after the remap but that didn't really surprise me as they were original. And had a breather pipe split so thought that might be causing the dip but have replaced that and still the same. Also replaced the DV with a Forge and still the same.

You can see a dip in MAF values before it regains again by 4000rpm so it is physically chucking less air down. It also does it again to less of an extent around 4300rpm as i have done some logs that dip there also.

 

[Chri$]

Spoke to Will about this and he said try it on super as i have been running standard 95. Done half a tank so far and still seems the same though (

 

[Big_daddy]

Spoke to Will about this and he said try it on super as i have been running standard 95. Done half a tank so far and still seems the same though (

It take time, kill all normal fuel on to reserve and fill it up vpower, for quicker effect stick some octane booster in . it adapts quickly to normal 95 but takes the mick top adapt to higher stuff.

 

[Chri$]

Have finally got it to throw a fault code now:

16795 secondary air injection system incorrect flow detected

Sounds like a vac leak to me?