Amd OneClick and EGR valve

Basil · 13-04-2006, 19:52

I have been pleased with my Amd OneClick in my fabia vRS.

Pre-map I had turned the EGR down to its minimum (almost OFF) using VAG-COM, to prevent the crud build-up in the pipes mentioned elsewhere, and to make sure that the engine is not breathing 15% exhaust fumes.

I wondered later if this had been adjusted by the OneClick map at all. Two emails to both the technicians and the customer support went unanswered.

I connected VAG-COM to check on the EGR valve and found that in the modified map, it had been turned back on.

Surely speaking from a performance only point of view, this can't be right?

I plan to turn it back to barely on in short order.

any comments anyone?

Cheers,
Bas

Lummox · 13-04-2006, 20:08

Im sure the map has been written with it set in the factory position.

EGR only runs a very small amount of the time, whist crusing usually on very light throttle at a sustained speed. As soon as you accelerate its turned off anyhow.

And most of the crud in the intake system comes from the crankcase breather system. The EGR ports directly from the exhaust manifold into the inlet manifold so doesnt actually go around the inlet system anyhow.

delroy · 13-04-2006, 20:36

When I had a digital tuning box I had the EGR turned down but the car smoked a lot more than normal. It doesn't smoke now I had it turned back to normal and took the tuning box off.

Does the EGR really make any noticeable difference from a performance POV?

HellFire · 13-04-2006, 20:42

Interesting! mine smokes a lot less with the EGR turned down.

delroy · 13-04-2006, 20:45

I think it may have been down to the tuning box. I was like Jason's car with it on!

I haven't tried it turned down with the tuning box off as the car doesn't smoke at all!

Lummox · 13-04-2006, 20:47

Quote:

Originally Posted by delroy

Does the EGR really make any noticeable difference from a performance POV?

It shouldnt really. It designed not to as it only works in certain conditions.

It effectively reduces the volumetric capacity of an engine by 20% (i.e a 2000cc engine becomes a 1600 cc engine) with EGR on, but its programmed to work when you dont need power.

Tom_vRS · 13-04-2006, 22:37

Quote:

Originally Posted by Lummox

It shouldnt really. It designed not to as it only works in certain conditions.

It effectively reduces the volumetric capacity of an engine by 20% (i.e a 2000cc engine becomes a 1800 cc engine) with EGR on, but its programmed to work when you dont need power.

2000cc - 20% = 1600cc

Lummox · 13-04-2006, 22:42

You really ought to stop miss quoting people

Basil · 14-04-2006, 10:26

so, if I get this right - EGR on = no problems, EGR off =no problems.
How come I felt that the standard-setting engine was ever so slightly more responsive with the EGR off?

Emissions POV ignored here - surely more pure intake air = better for engine and recirculating some used air= better for emissions?

Oh well...
Cheers for the further info
Bas

Basil · 14-04-2006, 18:10

With the EGR Off - i notice that the light throttle surging has gone - before you had to be pretty precise with the accel. pedal to avoid a certain spot. Off seems better.
Oh well...
Bas

WW_VRS · 15-04-2006, 08:37

Just turn it down on the remap as well

13-04-2006, 19:52	#1
Basil Hardcore Join Date: Feb 2006 Location: Bahrain Posts: 3,255 Members Car: Fabia vRS Thanks: 200 Thanked 194 Times in 151 Posts	Amd OneClick and EGR valve I have been pleased with my Amd OneClick in my fabia vRS. Pre-map I had turned the EGR down to its minimum (almost OFF) using VAG-COM, to prevent the crud build-up in the pipes mentioned elsewhere, and to make sure that the engine is not breathing 15% exhaust fumes. I wondered later if this had been adjusted by the OneClick map at all. Two emails to both the technicians and the customer support went unanswered. I connected VAG-COM to check on the EGR valve and found that in the modified map, it had been turned back on. Surely speaking from a performance only point of view, this can't be right? I plan to turn it back to barely on in short order. any comments anyone? Cheers, Bas

13-04-2006, 20:08	#2
Lummox Cupra Bush King Join Date: Sep 2003 Location: Newport Pagnell Posts: 22,461 Members Car: Mk2 Golf GTi 16v and building a 20VT MK2. Images: 2 Thanks: 22 Thanked 755 Times in 634 Posts	Re: Amd OneClick and EGR valve Im sure the map has been written with it set in the factory position. EGR only runs a very small amount of the time, whist crusing usually on very light throttle at a sustained speed. As soon as you accelerate its turned off anyhow. And most of the crud in the intake system comes from the crankcase breather system. The EGR ports directly from the exhaust manifold into the inlet manifold so doesnt actually go around the inlet system anyhow. __________________ www.unit18.co.uk Remapping Service now available, PM for details.

13-04-2006, 20:36	#3
delroy Briskodian Join Date: Apr 2004 Location: Kent Posts: 596 Members Car: Fabia vRS Thanks: 0 Thanked 5 Times in 3 Posts	Re: Amd OneClick and EGR valve When I had a digital tuning box I had the EGR turned down but the car smoked a lot more than normal. It doesn't smoke now I had it turned back to normal and took the tuning box off. Does the EGR really make any noticeable difference from a performance POV? __________________ You've been Skoda'taken!

13-04-2006, 20:42	#4
HellFire Briskodian Join Date: Jun 2004 Location: Leeds, West Yorkshire Posts: 3,174 Members Car: Skoda Fabia vRS Thanks: 0 Thanked 3 Times in 2 Posts	Re: Amd OneClick and EGR valve Interesting! mine smokes a lot less with the EGR turned down. __________________ Metro Blue '06' 5 Door Astra 1.8 SRi

13-04-2006, 20:45	#5
delroy Briskodian Join Date: Apr 2004 Location: Kent Posts: 596 Members Car: Fabia vRS Thanks: 0 Thanked 5 Times in 3 Posts	Re: Amd OneClick and EGR valve I think it may have been down to the tuning box. I was like Jason's car with it on! I haven't tried it turned down with the tuning box off as the car doesn't smoke at all! __________________ You've been Skoda'taken!

13-04-2006, 22:42	#8
Lummox Cupra Bush King Join Date: Sep 2003 Location: Newport Pagnell Posts: 22,461 Members Car: Mk2 Golf GTi 16v and building a 20VT MK2. Images: 2 Thanks: 22 Thanked 755 Times in 634 Posts	Re: Amd OneClick and EGR valve You really ought to stop miss quoting people __________________ www.unit18.co.uk Remapping Service now available, PM for details.

14-04-2006, 10:26	#9
Basil Hardcore Join Date: Feb 2006 Location: Bahrain Posts: 3,255 Members Car: Fabia vRS Thanks: 200 Thanked 194 Times in 151 Posts	Re: Amd OneClick and EGR valve so, if I get this right - EGR on = no problems, EGR off =no problems. How come I felt that the standard-setting engine was ever so slightly more responsive with the EGR off? Emissions POV ignored here - surely more pure intake air = better for engine and recirculating some used air= better for emissions? Oh well... Cheers for the further info Bas

14-04-2006, 18:10	#10
Basil Hardcore Join Date: Feb 2006 Location: Bahrain Posts: 3,255 Members Car: Fabia vRS Thanks: 200 Thanked 194 Times in 151 Posts	Re: Amd OneClick and EGR valve With the EGR Off - i notice that the light throttle surging has gone - before you had to be pretty precise with the accel. pedal to avoid a certain spot. Off seems better. Oh well... Bas

15-04-2006, 08:37	#11
WW_VRS Escorted Estate Join Date: Nov 2004 Location: Oxfordshire/Berkshire Posts: 9,864 Members Car: Ford Escort 1.6LX + Fab Estate Thanks: 46 Thanked 85 Times in 75 Posts	Re: Amd OneClick and EGR valve Just turn it down on the remap as well __________________ WW --->> Project Journal (pic links in first post there) Lummox'/Ross thread on Unit18 Automotive progress on my car: here

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