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  #31  
Old 05-04-2022, 05:09 AM
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Originally Posted by wpoll View Post
Yep - seen BMWdoctors stuff - some is good and some is a bit suspect - like a lot of internet information. ;-)
Hahahah yes true I guess, some people advise removing that little cap from the pressure converter(s) and removing the filter and testing (not sure if this applies to converter that's for the egr valve too) but I guess if i ask mechanic to dig that far he may as well replace the whole thing....

in the meantime let me dig up inspection mirror and see if that plunger has any travel on startup...cheers
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  #32  
Old 05-04-2022, 05:33 AM
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I've done that very '"fix" on a turbo boost control pressure converter - on a Kia Sportage diesel. Worked for several months but then went bad again so replaced converter.

If I ever have to replace my turbo pressure converter, I'll use an OE or OEM (Pierberg) part only - not going in there more than I need to!!!
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  #33  
Old 05-04-2022, 09:11 AM
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Originally Posted by wpoll View Post
I've done that very '"fix" on a turbo boost control pressure converter - on a Kia Sportage diesel. Worked for several months but then went bad again so replaced converter.

If I ever have to replace my turbo pressure converter, I'll use an OE or OEM (Pierberg) part only - not going in there more than I need to!!!
yes you are are right, seen hella brand magnetti marelli etc too not sure they ok or not ....anyhow not got hold of the mirror to take a peak
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Last edited by omodos; 05-04-2022 at 10:41 AM.
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  #34  
Old 05-06-2022, 09:17 AM
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Originally Posted by wpoll View Post
I've done that very '"fix" on a turbo boost control pressure converter - on a Kia Sportage diesel. Worked for several months but then went bad again so replaced converter.

If I ever have to replace my turbo pressure converter, I'll use an OE or OEM (Pierberg) part only - not going in there more than I need to!!!
Wayne you will kick me for not having checked that plunger action as I start car yet BUT digging and digging and digging through posts for over 1 week now....am just wondering could it be that my X was remapped (before I bought car-hence the boost i had sub 2000rpm level?) and after coming back from mechanic after the manifold change he remapped ecu to default? gonna give him a buzz and see. Either that or see if i can find a x5 3.0d owner and let him drive mine or me his! Got the same observations as the fella in the post of a few years ago...i.e no boost till 2000rpm etc but none of the other symptoms like it smoking from the rear etc....I really wanna go down the approach of if it ain't broke don't fix....so if it is remapped and normal no need to well fix something that aint there.....clavurion says the boost comes gradually below 2000rpm but can be felt so need more 3.0d owner to chime in and tell me when theirs gives a kick so to speak.....checking out a few vids but tricky https://www.youtube.com/watch?v=3oRp14EnXmM
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Last edited by omodos; 05-06-2022 at 10:19 AM.
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  #35  
Old 05-06-2022, 03:28 PM
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Originally Posted by omodos View Post
Wayne you will kick me for not having checked that plunger action as I start car yet BUT digging and digging and digging through posts for over 1 week now....am just wondering could it be that my X was remapped (before I bought car-hence the boost i had sub 2000rpm level?) and after coming back from mechanic after the manifold change he remapped ecu to default? gonna give him a buzz and see.
Highly unlikely the DDE software was updated (this would erase any possible mapping) unless the shop was official BMW dealer. Any regular adaptation reset won't change the software.
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  #36  
Old 05-07-2022, 03:43 PM
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While performing an oil service yesterday, I was using INPA to check for codes etc. While I was in there (checking selective mass adjutments etc.) i had a quick look at my boost values, comparing the nominal vs the actual values at idle and at 1,500rpm.

At idle both were around 1015 hPa and at 1,500rpm they had both risen to about 1150 hPa.

Here's the screen in INPA (not mine - just a shot from the 'net).



This is the best way the check boost operation - more accurate that the "seat of the pants" method.
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  #37  
Old 05-09-2022, 01:29 AM
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Originally Posted by Clavurion View Post
Highly unlikely the DDE software was updated (this would erase any possible mapping) unless the shop was official BMW dealer. Any regular adaptation reset won't change the software.
Ok Clavurion, for sure the oil change indicator lights were reset ...not sure anything else
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  #38  
Old 05-09-2022, 01:33 AM
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Originally Posted by wpoll View Post
While performing an oil service yesterday, I was using INPA to check for codes etc. While I was in there (checking selective mass adjutments etc.) i had a quick look at my boost values, comparing the nominal vs the actual values at idle and at 1,500rpm.

At idle both were around 1015 hPa and at 1,500rpm they had both risen to about 1150 hPa.

Here's the screen in INPA (not mine - just a shot from the 'net).



This is the best way the check boost operation - more accurate that the "seat of the pants" method.
Thanks Wayne very interesting, not sure 'any' old mechanic here would have access to this ...but for sure that is interesting....not sure if i have to go find a tuning 'store' now as for sure they would have access to kit to analyse, this/tune this....hahahaha seat of the pants, right you are right, but I am pretty sure that by about 1700rpm I was feeling the boost....anyway I will revert with news....
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Last edited by omodos; 05-09-2022 at 01:43 AM.
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  #39  
Old 05-09-2022, 02:09 PM
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Quote:
Originally Posted by wpoll View Post
While performing an oil service yesterday, I was using INPA to check for codes etc. While I was in there (checking selective mass adjutments etc.) i had a quick look at my boost values, comparing the nominal vs the actual values at idle and at 1,500rpm.

At idle both were around 1015 hPa and at 1,500rpm they had both risen to about 1150 hPa.

Here's the screen in INPA (not mine - just a shot from the 'net).



This is the best way the check boost operation - more accurate that the "seat of the pants" method.
Wayne hi, the black hose 5odd cm diameter connected to egr valve has what looks like wire clamp and also a worm hose clip on it attaching it to the egr valve..
how tight does that need be? No play at all? Plus looking at a photo i took that i just looked at i can see like an indentation from someones nail, not sure its a tear but how significant is this part of the system re turbo spool?
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  #40  
Old 05-09-2022, 03:13 PM
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Wayne you need to start charging this guy lol
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