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How important is a Provent/EHM when using the ECO tune?  RSS feed
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dsmithwc04

Joined: 16/01/2010 14:08:17
Messages: 2
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I am waiting for my ECO tuned ECU to arrive shortly and was wondering if GDE or others recommend using the Provent or EHM with the tune? I know the CCV system will still continue to do its thing but with less soot from the EGR being turned off I was wondering if the problems isn't enough to warrant the use of on oil catch system.
flman
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Joined: 28/08/2009 19:59:32
Messages: 74
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I don't use it on either one of my Jeeps, as long as you are not mixing soot and oil it will be OK. If you are using the EGR you need the provent/EHM so the oil does not cake up the manifold. That little bit of oil going through the air charge system is not going to hurt a thing, in theory, the oil should dissolve the soot eventually.

Still Burnin Oil since 1992!
2010 John Deere 2305 3 cylinder Yanmar
GDE HOT!! Tuned 2006 CRD LTD Silver, Euro TC, GDE Tuned TCM, B&M Trans drain kit
GDE ECO Tuned 2006 CRD Sport Black, B&M Trans drain kit, Front and rear hooks, Full Skids
GDE ECO Tuned 2005 MB 2500 Sprinter Van
2010 MB 2500 Sprinter Van
dsmithwc04

Joined: 16/01/2010 14:08:17
Messages: 2
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It will dissolve it? Is that if you use synthetic? I use mobil 1 TD oil so maybe that will help dissolve what will be left in the system.
GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 353
Location: Southeast Michigan
We concur with flman, there is no need for the provent or EHM with the tune. The intake may not fully self clean over time, but the build-up will stop occurring. Oil going through the engine is not a problem. You need to be aware that the oil will still bleed through the CAC hoses and weaken them over time. We would recommend the Samcos as a good fix due to the silicon lining so the oil does not bleed through.
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Dave

Joined: 26/01/2010 13:56:59
Messages: 27
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I did a homemade version of the provent. It collected a lot of "snot" but little oil. I still had oil in the CAC and believe it is coming from the turbo bearing seal.
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GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 353
Location: Southeast Michigan
After making your provent, how much time did you give the engine to clean itself out? There always seems to be some residual that never disappears. Be careful with CCV mods if in winter climates. Having a longer breather hose increases the chance that water vapor will freeze in the hose and prevent the engine from properly breathing. If this happens you risk blowing oil out the front and rear main seals.
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Dave

Joined: 26/01/2010 13:56:59
Messages: 27
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I ran the homemade unit for about 6 months. I would check the hoses periodically and they were always "damp" with oil inside. But now, with out the EGR, it doesn't bother me. I guess it is possible my unit was condensing the water vapor and still passing the oil vapor, except the tube running back to the turbo was fairly clean?

Icing up is exactly what happened one fine 15*F morning. That is why I removed it. I'm lucky to escape damage.
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WXman
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Joined: 29/01/2010 14:53:49
Messages: 28
Location: Kentucky
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I plan to keep my EHM hooked up when I get my GDE ECU back. Reason why is because I don't want oil in my MAF sensor OR my intercooler, both of which are expensive parts.

'05 Liberty CRD Limited
Factory Off-Road Package
Daystar spacer lift/Conduit washers
Skyjacker H7088s in the rear
Renegade wheels
255/70-16 General Grabber AT2s
GDE HOT Tune
EHM
No clutch fan
"Euro" TC
GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 353
Location: Southeast Michigan
With the tune and even without, the stock CCV routing should not effect the MAF or the intercooler efficiency much. We drained our intercooler after 70-80k and only got a couple ounces out. The oil tends to settle on the bottom over time and will not impede the heat transfer of the intercooler. The MAF is upstream of the CCV inlet and is only exposed to oil in extremely minute quantities that the element is designed to cope with.

As for oil and the CAC hoses, the silocon lining is a must for longevity.
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CRD Joe
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Joined: 18/07/2009 21:11:02
Messages: 49
Location: Seattle, Washington
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So do you recommend removing our already existing provents?

'05 CRD
Suncoast, Transco, Inmotion, Provent, ORM Snorkle, HID's, 2.5" Cat back no muffler, V6 Airbox, Fumoto, Cat 2 filter
GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 353
Location: Southeast Michigan
We do not want to advocate the usage or removal of the provent. This is more of a personal preference for each customer. We are located in a area where the winters can cause potential freeze-up issues if the CCV lines get too long and that is our main reason for not using the provent. Plus our vehicles are using silicon lined CAC hoses to the oil will not bleed through. I little oil going through the engine is normal and not a concern...with good hoses.
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