More on the EGR Bypass Valve....Modify or Leave alone

[Roverron]

Originally Posted by rovexCDTi

I dont think £50 spent on a bypass is good value.

Unless you have tried a bypass, then you cannot comment on the value of one.
There is a discerible difference between a clean, disabled one and a bypass.

However, its entirely up to the individual as to whether to do any mods but commenting on the value or effectiveness witout actually having tried the mod is unreasonable.

Ron

[rovexCDTi]

Fair enough, but how many people go straight from a dirty leaking EGR to a bypass? Thats obviously going to help. How many also fit a new MAF or Synergy? Do the intake mod? Going from anything but a clean working system to a bypass is not a fair test.

The only really sure fire way to tell is to dyno the car and recording boost pressure levels when booting the throttle at a number of engine speeds. Personal 'feeling' cannot be relied upon as a measure in a world where people swear adding redex to a car improves the power significantly within seconds (and people do say that).

[Roverron]

Originally Posted by rovexCDTi

Fair enough, but how many people go straight from a dirty leaking EGR to a bypass? Thats obviously going to help. How many also fit a new MAF or Synergy? Do the intake mod? Going from anything but a clean working system to a bypass is not a fair test.

The only really sure fire way to tell is to dyno the car and recording boost pressure levels when booting the throttle at a number of engine speeds. Personal 'feeling' cannot be relied upon as a measure in a world where people swear adding redex to a car improves the power significantly within seconds (and people do say that).

Many owners have gone from a clean egr to a bypass and have commented on the difference.
Its not realistic to expect everyone to stick their vehicle on a dyno everytime they do something to it.
Apart from which, a dyno is never used (nor is much use) for measuring turbo lag, part throttle torque or throttle response and these are very important factors in how a vehicle 'feels' in the way it drives since we do not use full throttle for much of the time.
The seat of the pants feel is extremely relevant - relevant enough for several manufacturers from Ferrari to Vauxhall to fit 'sport buttons' which do nothing more than sharpen the throttle response by in effect altering the accelerator pedal calibration. (ignoring effects on suspension etc)

I stand by my original assertion: if you want to criticise or pass judgement on something, try it first, otherwise you fit into the category of 'armchaior expert' and there's enough of these inhabiting the 'net already'!!

Ron

[Iceman]

Originally Posted by Roverron

Many owners have gone from a clean egr to a bypass and have commented on the difference.
Its not realistic to expect everyone to stick their vehicle on a dyno everytime they do something to it.
Apart from which, a dyno is never used (nor is much use) for measuring turbo lag, part throttle torque or throttle response and these are very important factors in how a vehicle 'feels' in the way it drives since we do not use full throttle for much of the time.
The seat of the pants feel is extremely relevant - relevant enough for several manufacturers from Ferrari to Vauxhall to fit 'sport buttons' which do nothing more than sharpen the throttle response by in effect altering the accelerator pedal calibration. (ignoring effects on suspension etc)

I stand by my original assertion: if you want to criticise or pass judgement on something, try it first, otherwise you fit into the category of 'armchaior expert' and there's enough of these inhabiting the 'net already'!!

Ron

i'm with Ron on this one, just fitted a synergy having already done a egr bypass and pcv filter replacement, the performance is outstanding even though i'm still not sure if my turbo is working correctly, gotta do the viton seals to...your right Ron it does make a difference....a BIG one

[Arctic]

Originally Posted by Jules

You will always get both answers to that, even if you read this whole thread!
I'm on the side of our resident senior Guru James!......
Keep it but disconnect the Vacuum hose and seal it with a shanked woodscrew, pop rivet, broken drill bit etc.
I've seen many blocked off with an ordinary wood screw with threads right up the head..................of course this won't seal the pipe as the air enters via the screw thread, with the possibility of reducing your brake servo vacuum !

Hi This is the ERG below and i have pointed out the part with a biro which i asume that is blocked off or pinched in some cases ? am i right as this is very new to me, of cause i first need to clean it, i purchased this as an extra to change with the one that is still in tact on my car in the thinking that i want to keep the car as and how it was produced, i can then always have a clean one if and when it needs to be changed, i dont mind doing the work please check out the photo below and as your ERG been cloged up more than this, cheers arctic.

[Dragrad]

Disclaimer:
You are responsible for any work or modifications carried out on your car and you undertake any such work at your own risk. The 75 and ZT Owners Club nor the original authors in this thread can be held liable for anything that may happen as a result of you following this thread's posts.
Any modifications should be reported to your insurance company.

It's a legal thing......

[Arctic]

Hi the cleaned ERG waiting to be fitted when i can fit it in with the jobs to be done, lt took 20mins used carb clean and detol descale will do the same with the one i take of then just change it if and when need be.

[Arctic]

Hi Are gaskets available for these if so were from please.

[scouseeric]

I recall a post stating that disabling the egr brings the mil light on mk2 only iirc.
well i cleaned the egr when i fitted the synergie2 last week and took off the vac hose and blocked it. the mil has come on 3 times since but gone off shortly afterwards?
My scanner finds no faults when its on. Has anybody else experienced this?


Eric.

[Jules]

Originally Posted by Arctic

Hi Are gaskets available for these if so were from please.

It's a square sectioned O ring which comes as part of the manifold.
Usually re seals fine, if not try Hylomar
Failing that straight forward enough to make your own with gasket paper.

Originally Posted by scouseeric

I recall a post stating that disabling the egr brings the mil light on mk2 only iirc.
well i cleaned the egr when i fitted the synergie2 last week and took off the vac hose and blocked it. the mil has come on 3 times since but gone off shortly afterwards?
My scanner finds no faults when its on. Has anybody else experienced this?


Eric.

News to me!
Ours is a MK11 with EGR disabled & vacuum blanked off, never seen MIL lamp on.