Ok since my turbo has gone im constantly getting asked the question "is your engine light on?" My answer is "I don't know as my EGR DELETE causes the light to be on" My question to you guys is as follows. Does the EGR DELETE really do any good in performance or anything else, or is it just the theory of not having hot air re-circulate through the intercooler and the benefit of not having to clean the GUNK out all the time?

Fed up with the EML (engine management light) and being told endless B*L*C*S by my parents about mod's I shouldn't be doing.

If anybody is interested in a EGR delete, Im pretty sure mine is coming off soon... First dibs to FabiaJames.

Edited 23 February, 201115 yr by ROS53Y

just get the light mapped out job done

just get the light mapped out job done

This is not posible on the newer engine which I have. :(

Here are the facts about EGR delete.

1: It removes recycled exhaust gasses under light throttle and steady cruise. Under power the EGR is shut

2: It increases NoX emissions, a highly toxic gas

3: It SLIGHTLY reduces MPG

4: It increases combustion temperatures at steady cruise speeds. This MAY result in earlier than normal valve seat wear.

5: It reduces throttle flat spots, but only under light throttle application.

From 2012 it will be an MOT fail if an obvious delete pipe is fitted in place of the EGR valve.

This is not posible on the newer engine which I have. :(

Didnt realise it made a difference? mines been mapped out and thats a BLT which is the newer engine

Mine has the same issue and cannot be mapped out. Tried.

Kev at Jabba did say that i could use a wire to trick it....... cant remember the details though.

Lol, I NEED KEV! All jokes aside, I'd like to see some figures which im pretty sure as moggytech says there is NO gains. What gaskit's will I need to put all back to standard?

oh you definatly wouldnt notice anything imo, i just blanked out the std egr as it was faulty,

All the hot oily air goes back in your engine tho doesn't it? Just get it wired up to think it's there.

Matt

All the hot oily air goes back in your engine tho doesn't it? Just get it wired up to think it's there.

Matt

Depends if you have the PCV Elephant Hose mod or not. EGR on it's own, is simply very light sooting, that takes ages to build up to any degree worth even cleaning. However, combined with the PCV oil vapour and blow by gases, it becomes a thick oily sludge quite rapidly. PCV mod is almost a must have on a VNT Turbo diesel.

PCV mod is almost a must have on a VNT Turbo diesel.

Tell me more :yes:

Tell me more :yes:

It involves removing the pipe from the rocker cover to the inlet manifold. The inlet manifold connection is then blanked off. The rocker cover then gets vented into an oil catch can, which is also vented to atmosphere. Diesel PCV is forced out by bottom end pressure (there is no air intake vacuum in a diesel to suck the PCV gases out.)It's important to route the new hose properly to prevent any possible blockage, which will blow oil seals in the engine.

The oil catch can needs emptied as well to prevent pressure build up.

Some people just vent the rocker to atmosphere through a suitable hose. It tends to make the car pong of diesel inside though, and dripping oil onto the road is bad for bikers in particular.

Again there is a caveat, direct diesel injection does not lubricate the valves. PCV gases offers inlet valve lubrication to some degree.

I would say it is worth that minimal risk though. Diesels are designed to do high mileages, but PCV combined with EGR causes a horrid mess inside all of the air intake components. I've seen TDi inlet manifolds reduced to a pencil width bore, due to soot and oil fouling.

It involves removing the pipe from the rocker cover to the inlet manifold. The inlet manifold connection is then blanked off. The rocker cover then gets vented into an oil catch can, which is also vented to atmosphere. Diesel PCV is forced out by bottom end pressure (there is no air intake vacuum in a diesel to suck the PCV gases out.)It's important to route the new hose properly to prevent any possible blockage, which will blow oil seals in the engine.

The oil catch can needs emptied as well to prevent pressure build up.

Some people just vent the rocker to atmosphere through a suitable hose. It tends to make the car pong of diesel inside though, and dripping oil onto the road is bad for bikers in particular.

Again there is a caveat, direct diesel injection does not lubricate the valves. PCV gases offers inlet valve lubrication to some degree.

I would say it is worth that minimal risk though. Diesels are designed to do high mileages, but PCV combined with EGR causes a horrid mess inside all of the air intake components. I've seen TDi inlet manifolds reduced to a pencil width bore, due to soot and oil fouling.

This must be the well known "pikey mod" as others have named it. I was always wondering what it was about. Whats this overboosting problem I hear about due to all this business? The person who mapped my car said it's running 1.65 bar but my liquid gauge read 1.8bar, However I don't believe that one little bit. I believe the liquid gauge is very inaccurate.

yeah 1.8 bar is over 200bhp lol

saying that maybe you had a sticky VNT causing overboost... frying your turbo

Edited 23 February, 201115 yr by BigJase88

This must be the well known "pikey mod" as others have named it. I was always wondering what it was about.

Nope.

Pikey Mod - AKA Wheel arch SMIC Vent

PCV/CCV Elepahnt hose mod - AKA Crank case vent.

Edited 23 February, 201115 yr by Jonny5ive

This must be the well known "pikey mod" as others have named it. I was always wondering what it was about. Whats this overboosting problem I hear about due to all this business? The person who mapped my car said it's running 1.65 bar but my liquid gauge read 1.8bar, However I don't believe that one little bit. I believe the liquid gauge is very inaccurate.

EGR delete or PCV mod can not cause overboost. As BJ has said, sticking VNT is the most likely cause. Early signs of VNT sticking, is intermittent limp mode, as the pressure sensor on the inter-cooler will detect excessive pressure. The VNT sits on the hot exhaust side of the turbo though, so no PCV oil gets into the VNT. It simply gets exhaust soot, which if you give the car a serious dose of beans now and then, can be burnt off due to increased exhaust gas temperatures. This can be done without driving like an idiot, simply stay in a lower gear and hold 3.5K on the rev counter for a few minutes.

I know a lot of people get away with it, but I would never map a car with a standard turbo. The BLT engine typically produces 147BHP as standard from the factory. Tuners will beg to differ (some of them are excellent at what they do) so this is purely my humble opinion. Quite a lot of maps are done with massive over fueling = more soot (can you see where this is going?), more soot over the VNT, BANG.

yeah a pd130 turbo isn't the best to be mapped... the amount of soot coming out of some tdi's is rediculous, people think more soot = more power... uhuh! more soot = higher EGT's = bad!!

they recon water meth can reduce EGT's by upto 200 degree's... i had an EGT guage on my golf tdi, highest i got was around 700 degree's i think :o

yeah a pd130 turbo isn't the best to be mapped... the amount of soot coming out of some tdi's is rediculous, people think more soot = more power... uhuh! more soot = higher EGT's = bad!!

they recon water meth can reduce EGT's by upto 200 degree's... i had an EGT guage on my golf tdi, highest i got was around 700 degree's i think :o

You should see the EGT on an F4 Phantom on full after burner

Depends if you have the PCV Elephant Hose mod or not. EGR on it's own, is simply very light sooting, that takes ages to build up to any degree worth even cleaning. However, combined with the PCV oil vapour and blow by gases, it becomes a thick oily sludge quite rapidly. PCV mod is almost a must have on a VNT Turbo diesel.

Sorry I'm little confused, only very slight sooting? So what's the point of blocking egr then if it only produces minor soot which can be burnt off. Hmm maybe its time to replug my egr..

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How would you go about mapping out the EML light on caused by EGR modification. I have had the gasket changed ages ago to cure the BLT stutter which throws up the light intermittently. It's annoying, and wouldn't want it to "cry wolf" if it came on for genuine reason!

I dunno why your parents need to know every little mod you do, how would they even know you fitted an EGR delete? :S I don't tell them **** all...

Ring Jabba and ask if there's a fix?

I'm gonna pop round to main road metal tommoro at work and finally sort out these egr deletes for people

Right, according the Kev at JabbaSport the EGR light issue caused by the ECU looking for the valve in the EGR valve to change position. If you just put a blanking plate in the EGR you get the same effect and they can map out any remaining lights.

Personally, I'm only looking to change mine as EGR valve itself is leaking oil and a new one is £280+fitting. Scary.

i only disconnected mine for same reason, and had the light mapped out by shark whilst remap was being installed,

regards the Elephant hose mod, its the first ive seen of it on here for a few months, last time i saw a thread about it someone was complaining about problems that arose due to it, thats why ive never been brave enough to do it...... yet ! :wonder:

Edited 24 February, 201115 yr by MarkMac

i only disconnected mine for same reason, and had the light mapped out by shark whilst remap was being installed,

regards the Elephant hose mod, its the first ive seen of it on here for a few months, last time i saw a thread about it someone was complaining about problems that arose due to it, thats why ive never been brave enough to do it...... yet ! :wonder:

I did both about 2 tanks ago and must admit I was not expecting any difference at all but liked the idea of not sending all that crap back into the engine.

the car is otherwise standard so this is a comparison on a standard unmapped engine. I would not expect even the possible tiny differences I think I have noticed if mapped.

I can’t give a definite, but the car "feels" smoother at low revs and might also be a touch smother pulling away from a steady cruise. The difference is so slight though that it could be in my head

I am over 1000 miles in and am still fairly sure of the difference - I do a LOT of miles so am fairly convinced but can’t guarantee it. Fuel economy looks unchanged and may even be slightly up but again it’s too little to know if it’s me driving slightly differently.

Either way I am much happier to not be putting neither the soot or the oil back into the inlet. And it looks like no long term issues either from the reports I have read but its 2 pipes to reconnect if needed and if they do change the MOT then it can be made to look or be standard for the test.

Each to their own but it’s a change I am happy to make

Edited 25 February, 201115 yr by opentoideas