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  #301  
Old 09-12-2020, 12:11 PM
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WELL i guess the pioneers of this MOD in 2015 have either moved on or their cars have imploded lol .

WE are all thats left ...will keep the MOD as it has been effective for me and as for my oil leak? its coming from the oil level sensor....
good day everyone..
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  #302  
Old 09-12-2020, 12:28 PM
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Quote:
Originally Posted by docnabimmer View Post
WELL i guess the pioneers of this MOD in 2015 have either moved on or their cars have imploded lol .

WE are all thats left ...will keep the MOD as it has been effective for me and as for my oil leak? its coming from the oil level sensor....
good day everyone..
The pioneer of this mod, Cn90 is still around and reports the mod is still working well for him. I recently put the mod in my truck about 5000 miles ago. I'm still using oil. Truck hasn't imploded. Still a very small leak at the oil pan. Replaced the OFHG and fixed that very small leak.

I added a catch can to the mod and it collects oil, so it looks to me like if I had done this mod without the catch can I would have been dumping oil into the intake. That would have been bad.

I have a theory that the people that did this mod and had it worked had lower mileage engines than I did. I had 250,000 mile on it before I did the mod.
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  #303  
Old 09-13-2020, 11:11 AM
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Hey Fifty - I should say you and CN 90 are one of the few pioneers of this MOD left.Thank you for the input.
I was asking for more input from the rest esp.Bave39, I am getting ready to switch my E46 with the regular CCV and my E53 with an O2 pilot MOD to this MOD altogether...another E46 will stay as an M56 as is...
I will pull my spark plugs and take a look if I've been burning oil in there from this MOD .
03 325Xi 165 k miles
04 325XIT 158 k miles
05 325IT 169k miles(M56)yes with the built in fuel pump

05 X5 3.0 155 k miles

Cheers.

Last edited by docnabimmer; 09-13-2020 at 11:18 AM. Reason: add on
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  #304  
Old 09-13-2020, 12:32 PM
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My old e39 still going strong, over 200,000 miles. My son drives her now and loves the 5 speed. Hardly any oil usage. What a great little trick.
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  #305  
Old 10-06-2020, 07:30 AM
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I must revive this thread upon new findings regarding the amount of vacuum the M54 pulls after this modification.

In latest SIB 110308 BMW states the amount of pressure/vacuum inside the M54 crankcase must be ~16 mBar (that is 0,48inHg). As measured while using the FRAM FV345 PCV valve, the vacuum is 12-15 inHg (or +500mBar). That is over 30x the limit the engine was designed for, this is insane!

And this amount of vacuum is at idle ! Please imagine what letting off throttle/decelerating at 3-4-5K RPMs will do to the level of vacuum
This will no doubtly damage seals/orings inside and deprive the oil pump of oil, lowering oil pressure for brief moments on decelerations.

I have not met another engine in the world where upon opening the oil cap that much vacuum is present. This is wrong and must be addressed as this modification transforms a Closed Crankcase Ventilation system into a Positive Crankcase Ventilation system, but without all the elements needed for such a PCV system to work.

Inside classic PCV systems/engines, there is a continuous air circulation inside the crankcase because there are 2 holes letting the crankcase breath: first one lets the blowby exit being sucked by the intake through the PCV and the 2nd one lets fresh filtered air inside the crankcase in order to: 1) limit the amount of vacuum being built 2) properly vent all areas of crankcase in a wide range of engine RPMs
Usually this 2nd hole sucks air from the intake downstream (after) of filter/MAF/MAP but before (upstream) throttle - where the vacuum is low when throttle is closed.

By removing the CCV (OK), plugging the dipstick drain hole (not OK) and rerouting the crankcase blowby venting directly into the intake (OK) you have designed an incomplete PCV system. One has to allow the block/crankcase to be vented with fresh air from a clean source otherwise it would be like sucking air from a plastic bottle: something/somewhere will colapse and those will be either your VCG or rear main seal.

By venting the block through a 2nd hole you are punching a hole in that plastic bottle you are sucking air out of: while the sucking is still there, the bottle will not collapse anymore as some small venting/air is let in keeping it vented.

If this worked for some of you it does not mean is a right thing, the engine was not designed for this amount of vacuum - and this is BMW's statement as you can see.

You need to provide clean measured source of air to the crankcase while using the PCV. This can be easily done through the vacuum F connector in the intake boot with a T connected to the dipstick previously plugged while a check (one way) valve is installed to prevent air/pressure from the crankcase going up to the intake.
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  #306  
Old 10-08-2020, 01:13 PM
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Quote:
Originally Posted by Xelo View Post
I must revive this thread upon new findings regarding the amount of vacuum the M54 pulls after this modification.

In latest SIB 110308 BMW states the amount of pressure/vacuum inside the M54 crankcase must be ~16 mBar (that is 0,48inHg). As measured while using the FRAM FV345 PCV valve, the vacuum is 12-15 inHg (or +500mBar). That is over 30x the limit the engine was designed for, this is insane!

And this amount of vacuum is at idle ! Please imagine what letting off throttle/decelerating at 3-4-5K RPMs will do to the level of vacuum
This will no doubtly damage seals/orings inside and deprive the oil pump of oil, lowering oil pressure for brief moments on decelerations.

I have not met another engine in the world where upon opening the oil cap that much vacuum is present. This is wrong and must be addressed as this modification transforms a Closed Crankcase Ventilation system into a Positive Crankcase Ventilation system, but without all the elements needed for such a PCV system to work.

Inside classic PCV systems/engines, there is a continuous air circulation inside the crankcase because there are 2 holes letting the crankcase breath: first one lets the blowby exit being sucked by the intake through the PCV and the 2nd one lets fresh filtered air inside the crankcase in order to: 1) limit the amount of vacuum being built 2) properly vent all areas of crankcase in a wide range of engine RPMs
Usually this 2nd hole sucks air from the intake downstream (after) of filter/MAF/MAP but before (upstream) throttle - where the vacuum is low when throttle is closed.

By removing the CCV (OK), plugging the dipstick drain hole (not OK) and rerouting the crankcase blowby venting directly into the intake (OK) you have designed an incomplete PCV system. One has to allow the block/crankcase to be vented with fresh air from a clean source otherwise it would be like sucking air from a plastic bottle: something/somewhere will colapse and those will be either your VCG or rear main seal.

By venting the block through a 2nd hole you are punching a hole in that plastic bottle you are sucking air out of: while the sucking is still there, the bottle will not collapse anymore as some small venting/air is let in keeping it vented.

If this worked for some of you it does not mean is a right thing, the engine was not designed for this amount of vacuum - and this is BMW's statement as you can see.

You need to provide clean measured source of air to the crankcase while using the PCV. This can be easily done through the vacuum F connector in the intake boot with a T connected to the dipstick previously plugged while a check (one way) valve is installed to prevent air/pressure from the crankcase going up to the intake.
Thank you Xelo for your input.
I know you have doubts about this MOD since 2019 (post #253,) did you actually do the MOD and the corrections you suggested, what were the results if you dont mind sharing?
and would you change to the PCV1124DL before measuring the vacuum. We dont use the FRAM 345.
And if indeed there is a a reduction in vacuum, would connecting the F connector to one of the rear unused ports at the back of the intake manifold be as effective?(this is the port that is used by the O2 Pilot Mod)
thank you
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  #307  
Old 01-05-2021, 03:43 AM
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2004325ciLover is on a distinguished road
I'm 10K miles in.

Oil consumption went from a quart every 800ish miles to a quart every 3500ish miles.

I have 180K miles on my engine. No major leaks. RMS and oil pan has tiny amount of sweat, but has since I've owned the car at 134K miles.

Doc, do you ever throw an SES for high STFTs?

Here's what is occurring for me ever since I performed the mod:

https://youtu.be/LBC6gBnxTRY
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  #308  
Old 01-05-2021, 05:08 PM
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I have 6000 miles on this mod. I did it with a catch can. The catch can does catch oil, so this mod doesn't completely eliminate oil usage. That said, I'm 4000 miles since my last oil change and have only used about 1/2 liter. If I go to my next oil change at 5000 miles without adding oil I will consider this mod a complete success. I already consider it a very good mod. I haven't received any SES for STFT. I get the odd LTFT SES for too rich in one bank, but I was getting those before the mod.
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  #309  
Old 01-06-2021, 11:19 AM
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Join Date: May 2009
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Quote:
Originally Posted by 2004325ciLover View Post
I'm 10K miles in.

Oil consumption went from a quart every 800ish miles to a quart every 3500ish miles.

I have 180K miles on my engine. No major leaks. RMS and oil pan has tiny amount of sweat, but has since I've owned the car at 134K miles.

Doc, do you ever throw an SES for high STFTs?

Here's what is occurring for me ever since I performed the mod:

https://youtu.be/LBC6gBnxTRY
I had the EXACT SES light with High LTFT like yours, traced it to a loose connection between pcv hose to rear intake port. I tightened that up and have never had an SES light since. Monitoring LTFT after that shows my readings hovering around the 5-8 not going over 10 and triggering a SES.
just keep in mind that will all this I noticed a small oil leak that i had thought was from the OIL Level sensor- it wasnt, it was from a split RUBBER Cover to my OIL DIPSTICK TUBE.
5k into the MOD and I chickened out thinking it was my RMS or OIL PAN GASKET.
Went back to our conventional CCV factory set up with 5-30 Supertech FS.(yes-thats right)

So far 1/2 quart low .2000 miles in.SWitch to Rotella next.
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  #310  
Old 01-06-2021, 11:21 AM
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Join Date: May 2009
Location: NJ GSP 145
Posts: 49
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Quote:
Originally Posted by Fifty150hs View Post
I have 6000 miles on this mod. I did it with a catch can. The catch can does catch oil, so this mod doesn't completely eliminate oil usage. That said, I'm 4000 miles since my last oil change and have only used about 1/2 liter. If I go to my next oil change at 5000 miles without adding oil I will consider this mod a complete success. I already consider it a very good mod. I haven't received any SES for STFT. I get the odd LTFT SES for too rich in one bank, but I was getting those before the mod.
glad that it worked out for you fifty!!!
you mind posting pics of your SET UP?
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