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Leon FR 170 tdi egr valve
- Thread starter Welby88
- Start date
as far as I'm aware a blank just covers the port up. A delete physically replaces the egr with a pipe. People normally recommend a delete as the pipe will offer a smoother air track ( as their are no components inside it)
But i think you need to get the car 'remapped' to let the car know it no longer has an egr
But i think you need to get the car 'remapped' to let the car know it no longer has an egr
Also wondering if I can just blank it off as a diagnostic method? I know it'll throw a dash light, but would it actually do anything bad/dangerous - apart from upping emissions?
BTW removing it without a delete pipe means no... ASR (??) thingy that chokes the engine and stops an unwanted overrun... That should make sense to someone
BTW removing it without a delete pipe means no... ASR (??) thingy that chokes the engine and stops an unwanted overrun... That should make sense to someone
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don't know if vag com has anything you can change but it will still run with the egr blanked. and as said prob engine light will be on.
Some delete pipes are designed to leave the asv there to prevent any embarrassing judder when turning car off etc XD
Some delete pipes are designed to leave the asv there to prevent any embarrassing judder when turning car off etc XD
If you blocked the egr on the exhaust side n left a Tiney hole it would still have the asv so shud be fine yeah basically my car keeps hesitating due to egr so wanna blank it DIY
Forgive my ignorance, but I though EGR issues were / can be caused by the clogged valves which leads to too much gas being fed back in, hence dips/lags/stutters. I though a full blank would be effectively the same as jamming the EGR valve shut, rather than it sticking open intermittently.
Again, forgive my ignorance, I really don't know much if anything about these systems.
Did you fit the delete pipe yourself?
cheers
Again, forgive my ignorance, I really don't know much if anything about these systems.
Did you fit the delete pipe yourself?
cheers
the blank is usually to stop the exhaust gasses entering the egr/inlet . which is where the soot comes from. Obv if you blank it and not clean the egr out then there will still be deposits in the egr
Yeh even though you have blanked it, the valve itself will still be in the pipe and will still clogg
Best thing to do is fit EGR delete pipe, keep the ASV, remove the egr return pipe and fit the blank at the back of the engine.
Best thing to do is fit EGR delete pipe, keep the ASV, remove the egr return pipe and fit the blank at the back of the engine.
Just to add i have fitted a blank at the turbo end and next the egr had it mapped out by shark and all is well, the black crap can not get to the egr valve now as its blanked off yes the egr vavle is still there but only fresh air is going thought so no way it can block up???
Also it looked stock too which is better, as the way mots are going it wont be long untill they are part of it i bet!!
Also it looked stock too which is better, as the way mots are going it wont be long untill they are part of it i bet!!
Tried to explain by drawing some simple diagrams lol
Below is a diagram of the EGR "Pipe", The pipe coming off it goes to the back of the engine. Basically you are saying you have blocked it at points 1 & 2 so that pipe no longer flows.
The problem is inside the EGR pipe the "guts" of the actual valve are still there (as seen below). The circle diagram shows how it looks if you look down the EGR pipe.
So basically its still going to clogg up eventually, when i took mine out it was quite clogged after about 2 years.
Now i might be wrong, but my understanding of the EGR system is that the valve guts will still clogg hence why we all fitted delete pipes (Removing the guts also allows a better flow)
Below is a diagram of the EGR "Pipe", The pipe coming off it goes to the back of the engine. Basically you are saying you have blocked it at points 1 & 2 so that pipe no longer flows.
The problem is inside the EGR pipe the "guts" of the actual valve are still there (as seen below). The circle diagram shows how it looks if you look down the EGR pipe.
So basically its still going to clogg up eventually, when i took mine out it was quite clogged after about 2 years.
Now i might be wrong, but my understanding of the EGR system is that the valve guts will still clogg hence why we all fitted delete pipes (Removing the guts also allows a better flow)
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