Pajero Owners Club of South Africa

Speknek wrote:Hi

The more I read the more I worry about the EGR removal.In the first few posts it seemed simple, just remove and blank out. The latest is becoming more technical in regards to vacuum and blanking off.
I need some piece of mind, please. Can I follow the steps in removing the EGR and not worry about putting T pieces ect. in.

So far it doesn't seem to be helping my economy, so you can just blank it off and be done with it.

However, I have definitely felt an increase in performance by just unplugging the bottom diaphragm vacuum pipe and feeding the top diaphragm vacuum pipe into the boost sensor's pipe with a T-piece.

Speknek » Mon Sep 03, 2012 9:06 am

Hi

The more I read the more I worry about the EGR removal.In the first few posts it seemed simple, just remove and blank out. The latest is becoming more technical in regards to vacuum and blanking off.
I need some piece of mind, please. Can I follow the steps in removing the EGR and not worry about putting T pieces ect. in.

Spekkie,
The question at the moment about EGR delete is ” What happens when EGR is no more functional but the ECU expect it is still there.” What will the ECU do? I think at most it will only vary the fuel supply so that it supplies less fuel due to being under the impression the engine breathes more exhaust gas and less oxygen in the mix. To me this is not a problem. It is simply under fuelling as if you have lifted the right foot slightly. For this reason I have not changed anything relating to the so called top and bottom valve. (PS. The EGR is a 3rd valve and hidden under the plastic engine cover.)
I have just recently removed the EGR pipes and blocked off the vacuum pipe to the EGR and the two ports to the manifolds. I found noticeable improvement as far as the midrange driving is concerned. The turbo comes in quicker. It is noticeable that the speed control now maintains a constant speed more accurately than before. Can’t tell about consumption yet.
There is a much easier way to achieve the same results without removing and blocking off everything. All you do is pull off the vacuum pipe off the EGR valve and block that little rubber pipe with a pièce of a 4” nail. Now the EGR valve stays closed and no EGR takes place. The engine’s appearance remain intact as none of the EGR components are removed.
This is ideal for an experiment as it can easily be reversed. It will give you exactly the same results as a total delete (removal) of the EGR kit.
Try it and see for yourself.

Hi Bigwill

Thank you very much for the simple explanation. I will go the testing route first (blanking off the vacuum on the EGR). Will respond.

Cheers

Hi,Bigwill, I read your easy way to delete the EGR and did the mod you suggested by pulling off the vaccuum pipe from the EGR valve actuator and blocking it off.
I then decided to take the valve and pipe running over the engine off to inspect, as I read in other posts it can be gummed up .No surprise...there is a lot of oily gunk in the valve body and and pipe, whick makes me suspect that the whole system is covered.
Does this residue normally get into the intercooler as well?
If it does , is there a way of flushing it without removing the intercooler, as this seems to be a bit of a bother.

Sorry about this late reply.

Does this residue normally get into the intercooler as well?

The answer is certainly NO. The intercooler gets its flo from the air filter and air ducts which then passes through the the clean fan side of the turbo into the intercooler. Actual exhaust gas (also circulating via EGR)drives the impeller side of the turbo but then escapes down the exhaust pipe. Once EGR gasses enter the inlet manifold it will not flow against the turbo pressure to enter the intercooler from its exit side.