It is currently Mon Sep 29, 2025 4:03 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 15 posts ] 
Author Message
 Post subject: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Mon Oct 26, 2015 12:51 pm 
Offline
LOST Addict
User avatar

Joined: Sat Nov 23, 2013 8:57 pm
Posts: 2663
Location: Boise, Idaho
Just my latest random thought. Is there any evidence that the light coating of oil on the MAP sensor makes any difference in its ability to make its various measurements? If there isn't, then the only real gain is not having rotten hoses?
GDE/Keith runs his CRD's in the stock config right?

Thanks for any insight.

_________________
05 CRD: H.D.S2 stat,WW Ironrock trilink&LCA's, OX rear,ARB front, 4.10's, ARB bumper, Suncoast,OME 3.5, JBA UCA,rock rails, Moabs&265/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new valves,sasquatch battery tray & grid heater, tensioner relocated
Mech fan, VH & AC delete


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Mon Oct 26, 2015 1:49 pm 
Offline
LOST Junkie
User avatar

Joined: Sat Jul 11, 2009 4:17 pm
Posts: 872
Location: Biella Italia
I think can not affect the air temp/pressure reading , and I think can clean the intake dissolving the previous mixture created with the egr

_________________
ECU Tuner -EGR OFF -DPF OFF Swirl/Flap OFF, Lambda OFF , DTC OFF in many cars , not ONLY

https://www.facebook.com/YetiChiptuning


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Mon Oct 26, 2015 2:16 pm 
Offline
LOST Member

Joined: Sun Feb 12, 2012 6:38 am
Posts: 221
Location: Norton Ohio
Main issue is probably the rotten hoses and not having the inter cooler get a lot of oil in it/ tar on intake after the egr.

_________________
05 CRD Limited GDE Hot Tune, EuroTC, ARPs, Full EGR Del, IDParts Hoses, Etecno 7v GP, OME 790 Bilstein 916front, OME948 OME N132Lrear, JBA A-Arms, 245/75/16 Duratracs+Moabs, Renegade roof lights, Curt Front Hitch, BTF Kryptonite Diff, JCR Stage2 Rails, SkidRow Skids, HDS Tstat,

Sold 06 CRD Limited K&N, EHM, ORM, EuroTC, TransgoKit, Samcos


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Mon Oct 26, 2015 2:17 pm 
Offline
LOST Addict

Joined: Fri Jun 22, 2007 11:43 am
Posts: 4962
Location: Green Cove Springs FL
The MAP sensor works just fine with light coating of oil.
The problem is when EGR soot combines with that oil.
So as long as you EGR is disabled the MAP will be fine.

Yes, the oil from CCV can cause your intake and boost hoses to rot.
But what about the intercooler? What does that fine coating of oi do to the efficiency of the intercooler? Will the intercooler slowly fill up with oil?
I have no idea.

_________________
U.S. Army Retired


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Mon Oct 26, 2015 4:37 pm 
Offline
LOST Addict
User avatar

Joined: Sat Nov 23, 2013 8:57 pm
Posts: 2663
Location: Boise, Idaho
ok, thanks for the responses. From what I've seen, there isn't a major build up of oil in the IC. I've also seen a stock configuration with the EGR deleted get nearly 40 mph at 65 on the freeway, so I think I'm happy with it as is. And, since (Flash I think?) has found a cheap replacement for the airbox to turbo hose, rotten hoses aren't an issue any longer. I bought a Provent, but I'm thinking it will just be added crap under the hood that really isn't necessary. I'm just going to replace the CCV puck every 100k or so for insurance that my NEW main seal holds up. If anyone knows how long the CCV pucks last before the flapper fails that would be awesome info.
As for IC effiency with oil in it, I can't imagine a stock tune doing much better than 40 mpgs, so I'm not worried about it. The oil also has the added advantage of telling you when your cheap plastic IC has a tiny leak, too small to register a code, or to notice otherwise. Ask me how I know :furious: :banghead:

_________________
05 CRD: H.D.S2 stat,WW Ironrock trilink&LCA's, OX rear,ARB front, 4.10's, ARB bumper, Suncoast,OME 3.5, JBA UCA,rock rails, Moabs&265/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new valves,sasquatch battery tray & grid heater, tensioner relocated
Mech fan, VH & AC delete


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Mon Oct 26, 2015 5:00 pm 
Offline
LOST Addict

Joined: Fri Jun 22, 2007 11:43 am
Posts: 4962
Location: Green Cove Springs FL
Since I have made a new turbo inlet pipe, I have been running the EHM because I don't yet have a place to attach the CCV hose.

I don't think the CCV can really fail. Inside is a spring and a rubber flap. The spring holds the flap open. The only reason I replaced mine was because I broke the plastic outlet.

I don't see anything wrong with the EHM.
Yes, it vents some visible vapors.
Yes, it will drip oil on my driveway.
Will it freeze up in winter?
I don't know. I live in Florida. The only place I ever see ice is in my freezer.
One day I will install a provent but I'm in no hurry.

I don't know how some folks are getting 40 mpg. They must be reading off the evic. Best I ever saw was 31 mpg during a long trip.
Nowadays I'm lucky to get 25 mpg.

Are you absolutely sure you have a rear main leak?
I thought I had a rear main leak. Even bought a new seal.
Never installed it though because after I replaced my turbo oil drain pipe and seal the oil leak stopped.

_________________
U.S. Army Retired


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Mon Oct 26, 2015 6:35 pm 
Offline
Lifetime Member
Lifetime Member
User avatar

Joined: Thu Dec 29, 2005 9:59 pm
Posts: 5171
Location: Austin, TX
EHM stinks... smells like used oil all the time

Provent -doesn't smell

_________________
2005 CRD
stuff
Skeptic quod gratis asseritur, gratis negatur


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Mon Oct 26, 2015 9:22 pm 
Online
Moderator
Moderator
User avatar

Joined: Sat Aug 24, 2013 11:36 pm
Posts: 7365
Location: Central GA
There are some valid reasons not to perform or run the EHM mod,
If you want to read the thread that covers in technical detail the problems caused by lack of vacuum on the CCV system? (EHM)
viewtopic.php?f=5&t=80491&hilit

I too first did the EHM but then installed a ProVent system when this information surfaced last year.
Live and learn!!! :wink:

_________________
Supporting Vendor and Moderator of LOST
05 Jeep Liberty CRD Limited :JEEPIN:
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount

98 Dodge Cummins 24 Valve


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Mon Oct 26, 2015 10:22 pm 
Offline
LOST Member

Joined: Thu Jun 06, 2013 3:18 am
Posts: 174
Location: BILOXI MS
I have ran the EHM for over 55k all good


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Mon Oct 26, 2015 10:35 pm 
Offline
LOST Junkie

Joined: Fri Mar 20, 2015 2:11 pm
Posts: 805
Location: markham, ontario
i did ehm (home depo special) 1/2 '' copper pipe plumbed into frame pass side area , look like umbrella style so the oil can not leak on driveway but does smoke a bit , i have no issue with it


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Tue Oct 27, 2015 8:21 am 
Offline
LOST Addict
User avatar

Joined: Thu Jul 23, 2009 5:47 pm
Posts: 1817
Location: York,PA
I have had the Provent on mine since just over 40,000 miles, I'm now near 109,000 and had GDE tune since around 50,000 miles. I pulled My MAP sensor once a few years ago and it was really not dirty at all, not like it was when I cleaned it after I did the provent install. It never smells and no mechanics ever question it not even the dealership, one actually knew what it was and why it was there.

It does collect a few ounces of oil every oil change. Other than that I never have to mess with it and it never stinks. it doesn't get all the oil my intake still has a slight film of oil but it does collect most from what I see.

_________________
2006 Liberty CRD Limited Deep Beryl Green Metallic Clear coat, Fumoto valve, MH ProVent (removed), GDE Eco tune,
OME 790/948 springs, OME struts, OME N132L shocks, Jeepin by Al A-arms, Hercules Terra Trac AT2 245/75R16
Weeks Stage 1 EGR delete, 5 volt steel glow plugs


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Tue Oct 27, 2015 12:28 pm 
Offline
LOST Addict
User avatar

Joined: Tue Jun 04, 2013 1:21 pm
Posts: 2137
Location: Utah
flash7210 wrote:
Since I have made a new turbo inlet pipe, I have been running the EHM because I don't yet have a place to attach the CCV hose.

I don't think the CCV can really fail. Inside is a spring and a rubber flap. The spring holds the flap open. The only reason I replaced mine was because I broke the plastic outlet.

I don't see anything wrong with the EHM.
Yes, it vents some visible vapors.
Yes, it will drip oil on my driveway.
Will it freeze up in winter?
I don't know. I live in Florida. The only place I ever see ice is in my freezer.
One day I will install a provent but I'm in no hurry.

I don't know how some folks are getting 40 mpg. They must be reading off the evic. Best I ever saw was 31 mpg during a long trip.
Nowadays I'm lucky to get 25 mpg.

Are you absolutely sure you have a rear main leak?
I thought I had a rear main leak. Even bought a new seal.
Never installed it though because after I replaced my turbo oil drain pipe and seal the oil leak stopped.

I've never understood the freezing thing. At least in my case I am running a 3/4" id fuel hose and it wraps over the top of the engine and down the drivers side of the block and then follows the fuel lines down the drivers side terminating somewhere under the drivers seat/footwell. It never has more than a little bit of oily fluid pooled at the base of the hose where it levels off. Even if that fluid did freeze, 95% of the cross section of the hose is open and its very rapidly going to heat up from the gas flowing through it and the heat from being attached to the engine block.

Sent from my Nexus 6 using Tapatalk

_________________
2006 CRD - GTB2056 turbo by Dieselguy86, Eco Trans Tune, Lift Pump, Week's, HDS Tstat, Racor Filter, ARP's, OME 790's+Top Plate, JBA 2.5", JBA UCA, Moab's+265/75R16, ARB Bull Bar, 4.10's, TrueTracs


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Tue Oct 27, 2015 1:20 pm 
Offline
LOST Addict
User avatar

Joined: Sat Nov 23, 2013 8:57 pm
Posts: 2663
Location: Boise, Idaho
Flash, as for the 40mpg. I was on level highway with low rolling resistance tires, stock sagged out suspension, cruise control set, and this 40 was only for the highway trips. I was able to average just over 30 with that same CRD, and that was some city, and a good bit of rocky mountain off-roading. But, then again, I was driving like a grandma and never exceeding 65 mph.
I am fairly certain that it's my main seal as I checked for turbo leaks, and I replaced the turbo and all seals 20k ago. Luckily I'm dropping the transmission anyhow for the Hemi TC, so at least I'm already in there. I have the factory tools, so hopefully the main seal will be easy to do for a first timer:/

WWDiesel, thanks for the reminder! I reread that thread and now remember why I bought the Provent in the first place :5SHOTS: The EHM is a terrible idea and I'm pretty sure it lead to my main seal failure. We need that slight vacuum as the thread explains... I seriously doubt the seal will last 300k miles or more with the EHM. I lost mine in 15k with a good bit of heavy towing.

_________________
05 CRD: H.D.S2 stat,WW Ironrock trilink&LCA's, OX rear,ARB front, 4.10's, ARB bumper, Suncoast,OME 3.5, JBA UCA,rock rails, Moabs&265/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new valves,sasquatch battery tray & grid heater, tensioner relocated
Mech fan, VH & AC delete


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Tue Oct 27, 2015 4:31 pm 
Offline
LOST Addict
User avatar

Joined: Tue Jun 04, 2013 1:21 pm
Posts: 2137
Location: Utah
Mountainman wrote:
Flash, as for the 40mpg. I was on level highway with low rolling resistance tires, stock sagged out suspension, cruise control set, and this 40 was only for the highway trips. I was able to average just over 30 with that same CRD, and that was some city, and a good bit of rocky mountain off-roading. But, then again, I was driving like a grandma and never exceeding 65 mph.
I am fairly certain that it's my main seal as I checked for turbo leaks, and I replaced the turbo and all seals 20k ago. Luckily I'm dropping the transmission anyhow for the Hemi TC, so at least I'm already in there. I have the factory tools, so hopefully the main seal will be easy to do for a first timer:/

WWDiesel, thanks for the reminder! I reread that thread and now remember why I bought the Provent in the first place :5SHOTS: The EHM is a terrible idea and I'm pretty sure it lead to my main seal failure. We need that slight vacuum as the thread explains... I seriously doubt the seal will last 300k miles or more with the EHM. I lost mine in 15k with a good bit of heavy towing.


I mean I had seen 37mpg post GDE tune and on the factory tires/suspension. This was on the EVIC's and I believe hand calculated it came out to like 36.3 mpgs or something.

I have no clue what I'd get now with an all highway drive. I went from stock goodyears to 265/70-16 Duratracs and never had the speedo corrected because its actually more accurate with these new tires than it was on the factory tires. This means the EVIC's would show worse mpg's than it had before since the tires are now spinning slower for the same actual speed. It still averages 25-26 according to the evics in its current form(2.5" lift, duratracs, arb bumper.) It was averaging 28-29 when stock.

_________________
2006 CRD - GTB2056 turbo by Dieselguy86, Eco Trans Tune, Lift Pump, Week's, HDS Tstat, Racor Filter, ARP's, OME 790's+Top Plate, JBA 2.5", JBA UCA, Moab's+265/75R16, ARB Bull Bar, 4.10's, TrueTracs


Top
 Profile  
 
 Post subject: Re: Provent or EHM any efficiency gain? Map sensor...
PostPosted: Wed Oct 28, 2015 10:57 am 
Offline
LOST Addict
User avatar

Joined: Sat Nov 23, 2013 8:57 pm
Posts: 2663
Location: Boise, Idaho
Yeah, my goal is still to average 30 with my lift and 245/70's. I think I'm going to try the michelin AT's, which aren't very aggressive, but I think they'll get me around well with lockers, at least when there's no snow. Probably need chains in the snow anyhow...

_________________
05 CRD: H.D.S2 stat,WW Ironrock trilink&LCA's, OX rear,ARB front, 4.10's, ARB bumper, Suncoast,OME 3.5, JBA UCA,rock rails, Moabs&265/75 Duratracs, GDE tunes ,FFD fan,ARP's, 2 micron fuel, new valves,sasquatch battery tray & grid heater, tensioner relocated
Mech fan, VH & AC delete


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 15 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 36 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!
Logo by pixeldecals.com