EGR kits,, do not buy!!!

**stig0000** · 28th August 2009, 11:32 PM

since I own a td5,, as like most people who own a td5 I have thort about the EGR removal kits,, and reading allot about people that have done it an 'say' they get better performance with a EGR kit,

after doing alot of reading and asking around, and just completing a emissions training week at landrover training in Sydney, I have asked landrover about the td5 egr kits,, and with what we learned about emissions that the kits have 100% no effect on performance,

if you don’t know how egr works Google it, but in short it helps Bern one of the 3 main gasses in the exhaust from your engine, once of which is NOz, when this gas burns it cools the oxygen around it down,, cooling your combustion chamber down, which makes the burning of the fuel more efficient(sort of like when people NOS there cars), in turn better fuel consumption, and helps in the cooling of your engine,

the only way EGR will hinder a engines performance is if its faulty, an most cases stuck open, letting the exhaust into the manifold all the time, but other than that it has no effect on performance,

So if your like most people out there that is looking at the EGR kits for performance, don’t get it unless you have a egr fault, which in that case is better to get it fixed, not taken off,

As always im open to all comments,

**cal415** · 29th August 2009, 01:21 AM

not owning a TD5 myself but owning a toyota 1kz-te prado, i know the EGR blocking helps these motors out, and i am guessing there is going to be a whole hoard of people on here that will disagree with you. Surely the EGR kits wouldnt be such common mod if it had no effect other wise we would all be runningn fuel polarisers and hyclones....

**Blknight.aus** · 29th August 2009, 04:46 AM

Actually I agree with him. If your EGR is functionin correctly there is no change in engine performance if you blank it off or bypass it.

That said.

I fixed mine twice before fitting the bypass kit and I'm not prepared to pay for what they want to replace the unit to stop it sticking open. When the EGR is working properly it allowes carbon particulate back into the air intake of the engine which also gets oil in it from the crankcase ventilation system AND any turbocharger blowby. carbon particulate and oil makes a very good lapping paste which is not something you want being fed into the engine.

**Graeme** · 29th August 2009, 06:15 AM

Originally Posted by Blknight.aus

Actually I agree with him. If your EGR is functionin correctly there is no change in engine performance if you blank it off or bypass it.

I don't agree with this statement as I've obtained considerably better light throttle response with EGR disabled. I've also had the experience of a faulty MAF causing the EGR valve to be kept open with the throttle open causing a dangerous throttle delay.

The D2 WSM states that EGR is only fitted (to these vehicles) for emission reduction purposes.

**Blknight.aus** · 29th August 2009, 06:56 AM

Originally Posted by Graeme

I don't agree with this statement as I've obtained considerably better light throttle response with EGR disabled. I've also had the experience of a faulty MAF causing the EGR valve to be kept open with the throttle open causing a dangerous throttle delay.

so that would be a sticking EGR in the first instance and an EGR fault in the second.

**landyfever** · 29th August 2009, 06:56 AM

Very good Nick, it sounds like you've learned something !

Anyway I agree with what you say but, replacing the land rover EGR housing with a more open free flowing housing will help.

**discowhite** · 29th August 2009, 07:03 AM

Originally Posted by stig0000

the kits have 100% no effect on performance,

,

100% incorrect statement!
the shear size difference in the throat between the EGR body and the EGR kit will surley have some effect in performance....as proven by many people.

cheers phil

**Leo** · 29th August 2009, 07:36 AM

Someone once likened the EGR concept to forcing somebody to breathe their farts.

On a serious note, have a look at the inside of the air intake manifold of an EGR equipped diesel car and it will be filthy. That gunk can't be good for the longevity of the engine. Also the official LR reason for the slight hesitation that the TDV6 and TDV8 engines sometimes suffer is the egr.

I can't speak about the TD5, but there is definitely a significant difference with the TDV6 once the EGR valves are blanked off.

**justinc** · 29th August 2009, 07:46 AM

Yes EGR may help when the vehicle is in as new condition, but having seen inefficient, choked engines from years of ingesting carbon particulates use more fuel and lose performance, then how can THAT be good for the environment??? I would sooner see efficient, correctly mapped modern diesels on the roads, than choked, smoking, fuel burning expensive to repair EGR equipped ones. I have seen quotes of $1500 and upwards to 'service' the Nissan ZD30 EGR system just to regain fuel economy and performance, which incidentally is a common problem with these so called modern high performance diesels

I remain unconvinced that leaving it attached to a Td5, especially the later throttled version(

) is a good thing if the engine is over 60K old.

Just my 1.5c worth

JC

**Graeme** · 29th August 2009, 08:18 AM

Originally Posted by Blknight.aus

so that would be a sticking EGR in the first instance and an EGR fault in the second.

Nope. 1st improvement was achieved by unplugging the electrical lead from the modulator (still the situation today with EGR valve still installed) and 2nd instance fault overcome by replacing the MAF with the EGR still fully functional at the time. The modulator was unplugged at a later date when I became familiar with the TD5's EGR system and engine electronics generally.

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