Revo Stage 2 Logs PAGE 3 HOLDING CRAZY BOOST***

[ibizacupra]

Correct, but I'm trying to offer some test options that may help diagnose this issue hence am interested to see if the g/s will drop with less boost or is it strangled for some other reason.

Also the new Maf you mentioned, is it genuine Bosch or OEM ( not an ebay clone!) , and 100% known to be the correct part number?

with a wastegate shut, and held shut, do you think a k03s is capable of flowing a sustained 1.4bar past 6krpm? Its not what they typically manage, is why I ask... the airflows k03s levels, but the reported held boost is very high, and in hybrid territory (which are k04's inside but with RS6 turbines), yet the flow does not match.

It shouts to me of some flow restriction..
the duty cycles max'ing at 4750rpm also is mighty odd

 

[James.Judd.1]

Bill, what things would cause high IDC's that early on in the rev range appart from increased airflow.. (obviously not the case for me)

knackered fuel pump?

I have some LCR injectors at home also.. will they overfuel the car too much to pull back using lemmiwinks? and will I need to fit them in conjuntion with a 80mm maf housing aswell?

 

[Wak]

with a wastegate shut, and held shut, do you think a k03s is capable of flowing a sustained 1.4bar past 6krpm? Its not what they typically manage, is why I ask... the airflows k03s levels, but the reported held boost is very high, and in hybrid territory (which are k04's inside but with RS6 turbines), yet the flow does not match.

It shouts to me of some flow restriction..
the duty cycles max'ing at 4750rpm also is mighty odd

Sure, you are probably right but I dont have much experience around k03's with clamped wastegates to comment on if they could make that kind of boost or not.
We try not to have cars with clamped wastegates!

We 95% see K04's and Big Turbo's, with an unusual problem like this going through the obvious to eliminate them is were I'm coming from.

Just trying to offer alternatives to the difference between the boost pressure (it shouldnt be able to make) and the Air mass meter readings that dont match.

 

[ibizacupra]

Bill, what things would cause high IDC's that early on in the rev range appart from increased airflow.. (obviously not the case for me)

knackered fuel pump?

I have some LCR injectors at home also.. will they overfuel the car too much to pull back using lemmiwinks? and will I need to fit them in conjuntion with a 80mm maf housing aswell?

the map is determining the duty cycle.......
have you fitted a wideband yet to see what afr's its actually doing?

 

[ibizacupra]

Sure, you are probably right but I dont have much experience around k03's with clamped wastegates to comment on if they could make that kind of boost or not.
We try not to have cars with clamped wastegates!

We 95% see K04's and Big Turbo's, with an unusual problem like this going through the obvious to eliminate them is were I'm coming from.

Just trying to offer alternatives to the difference between the boost pressure (it shouldnt be able to make) and the Air mass meter readings that dont match.

I know where you are coming from..
the figures dont make sense for what its doing (if) its a k03s, pumping without restriction

 

[James.Judd.1]

the map is determining the duty cycle.......
have you fitted a wideband yet to see what afr's its actually doing?

No I havent, AEM you say is the best?

AEM 30-4100? around £150?

 

[James.Judd.1]

Thursday	7	April	2011	20:43:05											
6K0 906 032 AA		1.8L 20VT EU3    01 0002													
															
	Group A:	'020				Group B:	'115				Group C:	'002			
		Idle Stabilization	Idle Stabilization	Idle Stabilization	Idle Stabilization		RPM	Load	Absolute Pres.	Absolute Pres.		RPM	Load	Inj. On Time	Mass Flow
	TIME					TIME					TIME				
Marker	STAMP	 CF	 CF	 CF	 CF	STAMP	 /min	%	 mbar	 mbar	STAMP	 /min	%	 ms	 g/s
	134.42	0	0	0	0	134.82	3760	27.8	1020	1070	135.22	3760	31.6	3.69	23.44
	135.64	0	0	0	0	136.14	3840	125.6	2150	1680	136.54	4000	182.7	24.6	144.75
	136.94	0.8	3	0	3	137.34	4240	183.5	2220	2520	137.74	4360	185.7	24.6	154.58
	138.23	0.8	3	3	3	138.63	4640	185.7	2180	2490	139.03	4720	185.7	24.6	168.28
	139.43	0.8	3	3	3	139.83	4960	184.2	2140	2430	140.23	5040	182	24.19	177.56
	140.63	0.8	2.3	3	2.3	141.03	5280	176.7	2090	2390	141.43	5360	174.4	23.37	179.06
	141.83	0	2.3	2.3	2.3	142.23	5520	168.4	2050	2380	142.63	5600	165.4	22.14	178.56
	143.03	0	2.3	2.3	2.3	143.43	5760	161.7	2020	2380	143.83	5800	160.9	21.32	178.25
	144.23	0	2.3	2.3	2.3	144.63	5920	157.9	1990	2360	145.03	6000	155.6	20.91	178.25
	145.54	3	1.5	1.5	1.5	145.94	6080	154.9	1970	2330	146.34	6120	152.6	20.5	179.78
	146.74	3	1.5	1.5	1.5	147.14	6240	150.4	1940	2370	147.54	6240	150.4	19.68	180.42
	147.94	3	1.5	1.5	1.5	148.34	6280	147.4	1920	2360	148.74	6320	148.1	19.68	179.86
	149.14	3	0.8	1.5	0.8	149.54	6400	142.9	1910	2500	149.94	6120	49.6	4.1	9.19
	150.34	0	0	0	0	150.73	5040	5.3	1020	1110	151.13	5000	6.8	0	7.31

 

[James.Judd.1]

Fitted my 4 bar fuel pump today and car feels alot better.. but no real difference in g/s it did let me add 3deg extra timing and this was the best I got... may of been suffering from a fare bit of heatsoak done quite a few logs before..

 

[joehirth]

Have you got a spare MAF you can try to be sure? Another thing to check would be the TIP, MAF would read low g/s if the air was getting in somewhere after the MAF i.e. if the TIP wasn't securely on the turbo...

 

[James.Judd.1]

Have you got a spare MAF you can try to be sure? Another thing to check would be the TIP, MAF would read low g/s if the air was getting in somewhere after the MAF i.e. if the TIP wasn't securely on the turbo...

Good idea about the tip ill have to have a propper check at the weekend.

Nope havent got a spare MAF either.. its not very old and an original bosch one.

 

[joehirth]

Good idea about the tip ill have to have a propper check at the weekend.

Nope havent got a spare MAF either.. its not very old and an original bosch one.

Defo worth a check on the TIP front. It is a possibility that the MAF is faulty though, you could buy another from Euro's or something as a "test item" pop it on there, see what it reads and then take it back saying you don't need it..

 

[James.Judd.1]

Defo worth a check on the TIP front. It is a possibility that the MAF is faulty though, you could buy another from Euro's or something as a "test item" pop it on there, see what it reads and then take it back saying you don't need it..

will the deffinately take it back do you know? obv I wont tell them I used it

 

[joehirth]

Not sure, worth asking if they'll take it back if it's not the correct item...?

 

[James.Judd.1]

I think im going to give up on this setup.. I cant bring myself to spend any more money on it.. Im slowly collecting the parts to go K04

 

[fourtwofive]

ko4? how come james?

 

[James.Judd.1]

ko4? how come james?

Given up on this setup man.. wanna go K04 soonish then in the future go k04 hybrid

 

[fourtwofive]

are you not interested to see how the bager 5 hybrid plus does same power output as a k04hybrid setup.....

 

[James.Judd.1]

are you not interested to see how the bager 5 hybrid plus does same power output as a k04hybrid setup.....

hmm yea but its not gunna cost me too much to go k04 as I already have some of the bits.. and should get 270-280 set up right, which will keep me happy for a while and then I was gunna save for the rods and diff and then eventually go hybrid..

It would be alot more financially viable for me rather doing it all in one big hit.

 

[fourtwofive]

fair play im just in a half way house.
i did also think about the k04 setup you will need to remap tho different exhuast mani the lot i dunno lol

 

[James.Judd.1]

yeah i was gunna use a S3 stage 2 map for start and then a custom map for the hybrid.. I was gunna buy a new downpipe anyways so no difference there so all I really need now is manifold turbo & oil and coolant line and a badger5 3" tip.

Im also getting a bigger cooler.