Closing the EGR Valve *check first post for links*

[srb]

This is all good but I reckon the perfect set up would see the egr valve closed 100% of the time while the throttle flap actuator stays open100% running in all conditions but remembering to close when you shut the engine down. This would be the ultimate solution.

[sierra]

Tsenior,

That's good that you can get all the gear to set up cross ventilation like that.

I wont pretend I got my head around it clearly but I can appreciate the potential.
With a blanking plate fitted it doesn't matter what the EGR valve does, it could be left to do it's thing in fresh air.
The throttle valve seems to get it's signal from the accelerator pedal, might be wrong with that. Has anyone with a sprint booster checked the throttle valve readout to see if its operation has been modified by fitting it?

You seem to be aiming to control the EGR valve and throttle body using the MAP signal suggesting the boost is the trigger?

It would be good to trick the MAF[apart from the higher flow] into supplying more fuel for higher boost but surely that is limited by the rail pressure. Hence you get more power with higher boost with less throttle pedal but the last part to full throttle makes little difference?

I think the ML3.2 and ML/MN 2.5[100kw] have the ECU boost cut at 22psi.

[lufc]

hi all
exuse my stupidness, but it is unclear to me were to block of the egr, the photos in this thread seam to be off the 3.2, i have a 2.5 and am unsure which one to blank off
please help

[burnah]

where can I get a blanking plate from.

I got mine from WOFTAM. Click below:
http://www.newtriton.net/phpbb/ucp.php?i=pm&mode=compose&u=4767

[burnah]

hi all
exuse my stupidness, but it is unclear to me were to block of the egr, the photos in this thread seam to be off the 3.2, i have a 2.5 and am unsure which one to blank off
please help

Mate, I hear ya. Took me ages to figure it out.
I've put mine here:

[lufc]

hi all
exuse my stupidness, but it is unclear to me were to block of the egr, the photos in this thread seam to be off the 3.2, i have a 2.5 and am unsure which one to blank off
please help

thanks heaps burnah, that is the one i was looking at ,the other end seams hard to get to
have you had any issues since blanking the egr

[burnah]

thanks heaps burnah, that is the one i was looking at ,the other end seams hard to get to
have you had any issues since blanking the egr

None at all mate.
Just more power and less lag.
I've done the MAP mod as you've probably noticed by my photo spam over the last few pages.

[burnah]

It has been suggested that the blank should go on the left side under the heat shield (looking at Burnah's pic). Perhaps someone in the know will clarify

There were so many opinions about this that I just chose the spot that was easiest to get to. I'd be happy to move it if there's a valid reason. Anyone?

[lufc]

thanks heaps burnah, that is the one i was looking at ,the other end seams hard to get to
have you had any issues since blanking the egr

None at all mate.
Just more power and less lag.
I've done the MAP mod as you've probably noticed by my photo spam over the last few pages.

just made and fitted a blanking plate took me 30 mins
is the map mod needed as part of the egr blanking plate

[burnah]

Nice one!
Not necessary, but a precaution to reduce the likelihood of limps and codes.

[odie602r]

It has been suggested that the blank should go on the left side under the heat shield (looking at Burnah's pic). Perhaps someone in the know will clarify

There were so many opinions about this that I just chose the spot that was easiest to get to. I'd be happy to move it if there's a valid reason. Anyone?

I recall there being talk about the blanking plate being after the EGR cooler, and that somehow this could potentially prevent damage should the EGR cooler break down/let go?

I think the general consensus is that at least if an EGR blank is installed somewhere, then no carbon will be deposited, so you're better off. It seems many people have placed it wherever it's been easier to get to.

[odie602r]

thanks heaps burnah, that is the one i was looking at ,the other end seams hard to get to
have you had any issues since blanking the egr

None at all mate.
Just more power and less lag.
I've done the MAP mod as you've probably noticed by my photo spam over the last few pages.

just made and fitted a blanking plate took me 30 mins
is the map mod needed as part of the egr blanking plate

For me, I got an increase in fuel consumption when I put in the EGR blank, and the one way valve MAP mod seemed to correct this.

Most others seem to get improved economy though, so for them it's purely to alleviate the possibility of codes/limp modes

[srb]

Only if you don't want a check engine light/under boost code.

[burnah]

I recall there being talk about the blanking plate being after the EGR cooler, and that somehow this could potentially prevent damage should the EGR cooler break down/let go?

This was my main source of confusion. I couldn't figure out which side was "before" and "after". I also couldn't work out why the cooler would "break down/let go".

[odie602r]

I recall there being talk about the blanking plate being after the EGR cooler, and that somehow this could potentially prevent damage should the EGR cooler break down/let go?

This was my main source of confusion. I couldn't figure out which side was "before" and "after". I also couldn't work out why the cooler would "break down/let go".

This is what swayed me ...


Re: Closing the EGR Valve

Postby Longranger1 on Fri Mar 30, 2012 6:12 pm
I think blanking the outlet side of the cooler makes sense as it will stop coolant leaking into the intake if it decides to let go. Rare, but it has happened with other makes.

Hydraulic lock = trashed engine. Not very happy making, but easily prevented.

If you are really anal, block the inlet side as well. Not much gunk should build up anyway with no flow through the thing


So, I blocked what I think is after the EGR cooler, down the bottom of the engine, passenger side, close to firewall. Hope this helps.

[wi53yz_4wd]

when fitting a blanking plate is gasket goo or any thing like that required

[burnah]

when fitting a blanking plate is gasket goo or any thing like that required

Nah mate

[biggibbo]

No Gasket or goo required - I put my blank on the other side under the heat shield as I found this one easier to access?? Too many wires and battery solenoid etc getting in the way.

I thought the pipe under the shield was pre cooler - maybe im wrong! wouldnt be the first time.

[burnah]

This is what swayed me ...

So you've put it where I have?

[wi53yz_4wd]

thanks guys will fit it when it arives from chipit.

[sierra]

I agree with Burnah's placement for the blank, it's where I put mine.

The main argument for fitting it before the exhaust cooler were to keep the cooler free of carbon but doesn't matter where you block a pipe it still stops the flow so the cooler wont fill up with crap.

Another advantage of fitting it post cooler is to minimise the volume that gets pressurised by low throttle boost when the EGR valve is open. It doesn't matter about that pressure in the cooler if the blank is fitted pre cooler, it gets much more from the exhaust but it will reduce the turbo response. The same as a large volume intercooler will.

I slipped the blank inside the 2 halves of the original gasket, so that you still see the lugs of that one poking out to look as if it's standard.

[lufc]

just drove home from work after fitting the blanking plate , good bye lag
exellent improvement for such a simple mod

[odie602r]

This is what swayed me ...

So you've put it where I have?

Yep, same place.

[viking shippy]

Why not put two in one at the egr and one at the exhaust manifold then if the cooler leaks it won't leak into the intake and you can convert it to a hot water heater for camping the mrs will love it

[sierra]

just drove home from work after fitting the blanking plate , good bye lag
exellent improvement for such a simple mod

Good result but don't forget that's a bonus because the real benefit is stopping all that crud from filling up the inlet manifold. Another bonus is cleaner engine oil.