EGR Valve

[WinDrop]

Hi all, me again ;)

Have done one modification to the car which is LED headlights now ready for the next one :)
I'm thinking of doing a stage 1 remap soon (Revo tech are doing Black Friday sale and can do stage 1 for £250 including VAT so if anybody interested just check their website)

I'm also looking at disabling/blanking EGR.
As a start I just want to disconnect it to see whether anything will change. Is this safe? I've heard people are doing it but most commonly of course people just blank it out or use Allard Kit to remove egr completely.
Would you say disconnecting it is an OK solution (Will keep it shut at all times) just to see how car will respond without it?
I know it will throw an MIL but not too worried about it as have VCDS to check engine periodically for any other faults.

Information seems to split 50/50 where some people say it's absolutely necesary to remove EGR as it improves everything by sooooo much and where others are saying that it's even dangerous to remove it as it might fry the piston rings (because of the temps)
Which one is it? Does it depend on the engine? if so is it safe to remove EGR on a 2.0TDI BKP engine?

Also, how safe is it to perform Stage 1 remaps on this engine? I'm looking after it very well, changing oil every 6 months etc so not like I'm not maintaining it properly. Will the extra power affect any components?

[RichardSEL]

Hi all, me again ;) <snip>
I'm thinking of doing a stage 1 remap soon (Revo tech are doing Black Friday sale and can do stage 1 for £250 including VAT so if anybody interested just check their website)
<snip>

Ask whether a Revo re-map will be lost if your battery's disconnected. (some APR's are reported as like that too)
Ask whether the flash counter in your ECU is increased once Revo's map is uploaded. If you have a serious prang then loss adjuster can see your ECU's been modified and invalidate any claim
Check whether they do a gizmo to save your OEM and Revo map data so either can be loaded again (like Superchips' BlueFin)

[WinDrop]

Ask whether a Revo re-map will be lost if your battery's disconnected. (some APR's are reported as like that too)
Ask whether the flash counter in your ECU is increased once Revo's map is uploaded. If you have a serious prang then loss adjuster can see your ECU's been modified and invalidate any claim
Check whether they do a gizmo to save your OEM and Revo map data so either can be loaded again (like Superchips' BlueFin)

Thanks for the advise.
Will definitely do that, didn't know that a remap can be lost if battery is disconnected o_O
Would you recommend Superchips over anything else? I assume that their remaps will stay after battery disconnections as well as won't increase ECU flash counter?

[RichardSEL]

Yes, this use of the volatile area of an ECU's memory has been reported in the US forums
But in north America the TDi is hardly ever an engine of choice as the BPY (like our BWA but slightly lower compression coz standard petrol there's 91RON as against our 95) Otherwise it's the same lump -- 2.0L tFSI -- as ours

I went with Superchips' remap via a roadside freelance a few years ago. My existing map was downloaded, sent to their head office. Modified there (the VW update for the inlet manifold flap issue was kept) and uploaded again. The flash counter didn't change. Last year had their free check and update offer (you had to go to their works for it, that included a sales push for Bluefin) but that time it did increase my counter by one.

Soon after had a dyno done and that produced 232bhp instead of stock 198

Don't often use it nowadays but occasionally do burn off an Audi who thinks my crabby looking estate couldn't even waddle let alone run.
Love the look on their faces. Must grow up sometime :Blush2:

[WinDrop]

Yes, this use of the volatile area of an ECU's memory has been reported in the US forums
But in north America the TDi is hardly ever an engine of choice as the BPY (like our BWA but slightly lower compression coz standard petrol there's 91RON as against our 95) Otherwise it's the same lump -- 2.0L tFSI -- as ours

I went with Superchips' remap via a roadside freelance a few years ago. My existing map was downloaded, sent to their head office. Modified there (the VW update for the inlet manifold flap issue was kept) and uploaded again. The flash counter didn't change. Last year had their free check and update offer (you had to go to their works for it, that included a sales push for Bluefin) but that time it did increase my counter by one.

Soon after had a dyno done and that produced 232bhp instead of stock 198

Don't often use it nowadays but occasionally do burn off an Audi who thinks my crabby looking estate couldn't even waddle let alone run.
Love the look on their faces. Must grow up sometime :Blush2:
Great advise. Thank you.

What about EGR? Do you know anything about that and whether it's dangerous to disable/blank it?

[RichardSEL]

TDi EGR blanking must be done as part of the re-map so the EGR is "mapped" out.
Can't comment on any "dangers" I'm afraid as that's more TDi info than I've got.
But it's been reported by those that've had it done that there's no ill effects AFAICR

[Gazwould]

No engine dangers , lol .

It works because the exhaust gasses being recycled should of been spooling the turbo so you wil get a more flexible lower rpm drive .

Better combustion as air is oxygenated .


Soot is no longer going back into the induction system ( silly idea as we have air filters to keep induction air clean ! )

Engine oil stays cleaner for longer from less abrasive soot particles and less of a Batman smoke screen out the back .

Egr out remap is usually £30-50 extra but worth it .

[WinDrop]

I thought that the remap only needs to be done so that EML doesn't appear.
People who aren't too bothered about the EML can blank it out and do the remap later on.
Isn't that true? Are there other things that are done during the EGR 'remap' ?

[Gazwould]

Number one reason for a remap is to get to Stage 1 .

[martin1810]

The diesel egr only works at steady state driving. At acceleration and idle it is off. Any remapper can set egr values so that the egr stays off 95% of the time. You don't need blanking plates.
Fitting a blanking plate will trigger error codes which can be mapped out but this is not ideal as you may want those codes to help diagnose another fault at a later date. EGR off makes engine run "cleaner" simply because it is pumping out more invisible air pollution (NOx) so if you don't mind helping to poison people, egr off is the way to go.

[WinDrop]

The diesel egr only works at steady state driving. At acceleration and idle it is off. Any remapper can set egr values so that the egr stays off 95% of the time. You don't need blanking plates.
Fitting a blanking plate will trigger error codes which can be mapped out but this is not ideal as you may want those codes to help diagnose another fault at a later date. EGR off makes engine run "cleaner" simply because it is pumping out more invisible air pollution (NOx) so if you don't mind helping to poison people, egr off is the way to go.
In that case I'm afraid that either VCDS isn't showing the correct data or my EGR is faulty.
I was monitoring EGR values in VCDS and at idle it was showing that 70% of air is being "recycled" when I revved the engine up to 3K RPM it went down to 20% but never to 0%
No matter what I did it never went to 0%, was averaging out to about 30-40% mostly

[Lockstock]

Hi.
Got A4 b7 2.0 tdi had a bigger turbo fitted with EGR & DPF delete, down pipe fitted,,,,,had no probs so far been a few months. However the EGR cooler pipe went (BIG TIME) letting water/coolant straight into the turbo.
Had to take my car back, replaced the turbo and had EGR cooler pipe removed. Through this experience GET IT REMOVED AT THE SAME TIME-pointless to have pipe work for something that has been removed.
Hope that helps.....!

[WinDrop]

Hi.
Got A4 b7 2.0 tdi had a bigger turbo fitted with EGR & DPF delete, down pipe fitted,,,,,had no probs so far been a few months. However the EGR cooler pipe went (BIG TIME) letting water/coolant straight into the turbo.
Had to take my car back, replaced the turbo and had EGR cooler pipe removed. Through this experience GET IT REMOVED AT THE SAME TIME-pointless to have pipe work for something that has been removed.
Hope that helps.....!
Can you say that your cars now runs smoother without the EGR compared to how it was with it?

Thanks

[Lockstock]

To be honest fella I bought the car this time last year and had all the work done within a couple of months of having it so I didn't have a 'feel' of how the car ran, so unable to honestly compare.
There's lots of lads who I've spoken to who are also saying it's worth doing.
It's been running fine!!
I also add a small (30ml) of 2stroke oil into the tank once a month with (only ever) performance diesel.
No sulpher in diesel that helped to lubricate.
Reduces smoke, noice/rattle, lube's the turbo and top of the engine.
Cleans DPF if you have one...loads of discusssions and diff of opinion, I like to do it and I love my machine!!!!
Regards
Lockstock

[WinDrop]

To be honest fella I bought the car this time last year and had all the work done within a couple of months of having it so I didn't have a 'feel' of how the car ran, so unable to honestly compare.
There's lots of lads who I've spoken to who are also saying it's worth doing.
It's been running fine!!
I also add a small (30ml) of 2stroke oil into the tank once a month with (only ever) performance diesel.
No sulpher in diesel that helped to lubricate.
Reduces smoke, noice/rattle, lube's the turbo and top of the engine.
Cleans DPF if you have one...loads of discusssions and diff of opinion, I like to do it and I love my machine!!!!
Regards
Lockstock
Good one, thanks bud.
Something I'm definitely looking into next year just need to find somebody who would be willing to code it out for me without having to do the remap as all I want is EGR delete but cannot seem to find anybody who would do it.

[Lockstock]

Which part of the country are you?
Won't you need remap if you have things like these deletes done?

[WinDrop]

Which part of the country are you?
Won't you need remap if you have things like these deletes done?
Northampton mate.
As far as I know EGR Software Delete can be done without having to do a remap.
Some companies will do the EGR delete for free if you do a remap but I just cannot spare £300 for a remap and would love to just do an EGR delete if it can be done for few £10's :)

[Lockstock]

Hi.
Have you tried Performance Torque in Wolverhampton?
Darkside development in Barnsley?

[WinDrop]

Hi.
Have you tried Performance Torque in Wolverhampton?
Darkside development in Barnsley?
Seen them mate but seem to be quite far for just an EGR delete.
Would be happy to travel that distance for a full remap though which I might consider maybe late next year but for now it's kind of a bit far away :(