Blocking the EGR Valve

[the evil twin]

Haha, with the hMm! In the Yoda voice too.

Maybe there are differences between Euro and Oz ?

Meah, who cares, bottom line is block the suckers anyway

[mudski]

Maybe there are differences between Euro and Oz ?

Meah, who cares, bottom line is block the suckers anyway

You got that right. Block that shizz.

[mullet_hunter]

Helpful read..

[funkyranga]

G'day Bindi. I'll tell you what I know and what I've done from my experience, as I've been in the exact position as you after I bought my CRD.
First thing I searched was, do CRD's need a EGR block. I searched this forum as well as a few other forums and lots of googling, and most answers were, yes it does. But then there were a few people saying no it doesn't as it does nothing on a CRD for various reasons. So I sat on it for ages, deciding whether I should or shouldn't blank it.

What really kicked things into motion for me, is when I seen a bunch of CRD's at wreckers opened up, and at around the point where the EGR enters the block, was all caked up, and the cylinders near by, 3&4 from memory, were a completely different shade of color due to heat from the EGR.

So I decided to just get it done and while at it, I'll get the dawes and needle valves fitted. After installing it all, I began kicking my self for NOT doing it earlier. The whole power scheme of the car changed. It had plenty more power and a nice smooth turbo spool up. The EGT's drastically dropped, because the EGR was blocked and there was now more boost flowing through system. The fuel efficiency changed too. Happy times all around!

Some issues I've had...
After blanking out the EGR, my car stalled several times for few hours after fitting the plate. But then it fixed it's self. Cannot explain why that happened, and as far as I've researched nobody else around here had such an issue.
The car now throws out an error code P0401. This is because EGR is blanked. The engine light doesn't come on, but P0401 comes up on my scangauge. I don't bother resetting it, because it only comes back minutes after I turn the car on again. And as far as I know the codes doesn't alter anything, it's just there to let you know something is up. No harm done.
My car has power mood swings. It's had this before and after fitting all that up. It's something with the turbo spool up, which I'm yet to work out. But, Mudski helped me out here heaps in fiddling with the needle valve to get it spot on. It's now been a week since we tampered with it last, and the car is still going good. Fingers crossed.

My personal advice is get that thing blocked asap. At minimum get in touch with mudski and get the boost control bits sorted out, the patrol will thank you for it. He is the man to talk to. The only other thing I should mention, is, your patrol is 2012, so I'll assume it still has warranty. If and ever you need warranty stuff done, I'm not sure how nissan will react if they see the bits you've tampered with it, especially the EGR block as it is after all, illegal.

My 2c !

Guys,

I have read this thread from start to finish.
loads of information.
here are my thoughts/ questions.
I have a 2012 CRD
I will fit an EGR blocking plate
Hole or no hole?
I have a scangauge 2
I see the plates available on line have about a 10mm hole, this seems quite large, I know its there to satisfy the ECU.
but wont it still allow a fair amount of crap through?
partially blocked, Hmmm.... interesting concept. will fill up with gunk over a longer period of time......
has anyone tried a smaller hole?
it appears from information in this thread that if you don't have a hole it just throws a code P0401 (no big deal I read)
I may do the experiment myself, no hole, 3mm hole, 5mm hole etc.

any feedback or thought would be appreciated.

[mudski]

Guys,

I have read this thread from start to finish.
loads of information.
here are my thoughts/ questions.
I have a 2012 CRD
I will fit an EGR blocking plate
Hole or no hole?
I have a scangauge 2
I see the plates available on line have about a 10mm hole, this seems quite large, I know its there to satisfy the ECU.
but wont it still allow a fair amount of crap through?
partially blocked, Hmmm.... interesting concept. will fill up with gunk over a longer period of time......
has anyone tried a smaller hole?
it appears from information in this thread that if you don't have a hole it just throws a code P0401 (no big deal I read)
I may do the experiment myself, no hole, 3mm hole, 5mm hole etc.

any feedback or thought would be appreciated.

I am going to install a

here are my t

IMO. If your going to use a plate with the hole, don't bother. Your still letting through the nasties, it just takes longer...
Hodges CRD is fully blocked, he only get the error on his scan gauge and don't even bother with it.

Cheers.
Mark.

Edit : why is your name familiar?

[the evil twin]

X2 ^^^^^ (cept for the name bit, I'm sure we've never met)

[Hodge]

As Mudski said. Mine is a full blank. I get the p0401 code most of the time. But I don't notice it because it hardly ever triggers an engine light. Engine light comes on maybe once a month for some reason and when I reset the code, it goes away.
Even if the code is throw it won't directly impact any performance.

[funkyranga]

IMO. If your going to use a plate with the hole, don't bother. Your still letting through the nasties, it just takes longer...
Hodges CRD is fully blocked, he only get the error on his scan gauge and don't even bother with it.

Cheers.
Mark.

Edit : why is your name familiar?

Mark,

because I sent you a PM a while back about Dawes, I still cant decide if its worth it on the CRD.
is there value in adding a Dawes on this model?
after trawling through the forums I see that some tend to believe that the late model CRD boost limits on its own quite well.
not sure I fully understand the finer points of the dawes yet, the jury is still out.
I like to fully understand something before I commit,

Cheers.
Liam

[Ronin]

I have a 2012 as well and would like to know if going the way of Dawes and needle valve is useful or not.

[mudski]

The CRD's don't "need" the dawes and needle valve. This is fact. But adding these valves impact greatly on better engine performance. This is fact also. I've fitted quite a few to the CRD's to see the difference myself. The CRD's do handle the boost a hell of a lot better than the Di's do, but like anything, theres always room for improvement. What I don't agree on is the comment I keep seeing via messages to me here and my store that the needle valve is a waste on the CRD. Pure bollocks. Lol. Why only take away half of the ECU's control over boost? Take the whole bloody lot I say. Then you have the final say in how the car runs.

If your going to spend the coin on your ride with bigger pipes, chips etc. Why wouldn't you instal these valves? Your only going to make the car go better.