Car pulling back ignition at only 1.1 bar!

[Gubien]

Hi!

My car is making some funny stuff! It pulls back the ignition! Measure block 020 says around +-3 knocks across the cylinders! Both at Revo B7/T4, B6/T4 also happened when I lowered the boost to B3/T4!

Have a new HKS Reloaded filter waiting to get mountet, as I think my 20-25.000 km bmc-cda sp12 is clogged up!...(havent been cleaned yet)

What could be wrong? (Apart from everything! LOL)

I would expect it to stop piulling the ignition back when I lowered the boost, but it just keept on going!

Btw. when switching to stock, the ignition advances!

LCR 210, BMC-CDA SP12, Forge 007p, spec stage 2 clutch and flywheel.

 

[Gubien]

Ohhh btw. I run Vpower 99 octane, so I cant understand why I have those problems at only T4!

 

[ibizacupra]

any knock sensor errors thrown? low sensor signal etc?

 

[Gubien]

No, vagcom does not show any errors at all! I was able to advance timing to B6T6 and it still makes the same figures! They are still +-3 across the range with some odd 5.3 in between.

 

[Gubien]

Btw. Had the HKS reloaded mountet with heat-isolation around it, did not make a difference.
The positive is though that my lambda numbers are around 0.850-0.820 under full boost where they was around 0.950-1.000 with the previous map!

 

[Gubien]

Here is a log with the switch set to stock:

	Group A:	'020				Group B:	'003				Group C:	'115			
		Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization		RPM	Mass Flow	Load	Ign, Timing		RPM	Load	Absolute Pres,	Absolute Pres,
	TIME					TIME					TIME				
Marker	STAMP	 CF	 CF	 CF	 CF	STAMP	 /min	 g/s	%	 °BTDC	STAMP	 /min	%	 mbar	 mbar
	198,27	0	0	0	3,8	198,89	2720	70,03	100	15,8	199,55	3040	117,3	1810	1460
	200,21	0	3	0	1,5	200,85	3640	82,44	100	22,5	201,47	3920	117,3	1840	1480
	202,03	0	2,3	0	0,8	202,61	4440	97,56	100	22,5	203,13	4680	115,8	1770	1450
	203,66	0	1,5	0	0	204,28	5120	116,03	100	21	204,94	5360	121,1	1820	1490
	205,6	0	0,8	0	0	206,25	5840	143,22	100	19,5	206,89	5960	34,6	990	1670

 

[Willie]

Is that log with your car switched to stock mode?

 

[Gubien]

Yep it is.

 

[Revo Kev]

There are loads of reasons it could be doing this; when did it last have plugs, what condition are they in? It doesn't seem excessive enough to be a completely b*ggered MAF but I wouldn't rule it out. Is there a vacuum leak somewhere? Is the fuel filter in need of replacing? Weak fuel pump or problematic fuel pressure reg?

 

[Gubien]

There are loads of reasons it could be doing this; when did it last have plugs, what condition are they in? It doesn't seem excessive enough to be a completely b*ggered MAF but I wouldn't rule it out. Is there a vacuum leak somewhere? Is the fuel filter in need of replacing? Weak fuel pump or problematic fuel pressure reg?

Hi Kev!

It had new plugs about 4000 km ago. Previous looked like this (bad map!).
http://espeloev.dk/carpics/IMG_6055.jpg

Have to working MAFs I have tried to switch between, same figures.

About the leak, I'm suspecting it myself, but first I will get the TIP upgrade.
Havent thought about the fuelfilter, fpr or fuelpump.

Either way, the car drives "fine", no cutouts etc.
But I dont think it makes the correct power output!