N249 bypass

[evo2345]

Anyone have a guide on how to bypass the N249??. Im sure my N249 is causing my car to hold back at low revs.

 

[kriso]

This shows it pretty clearly:

All you need is a bit of extra vacuum hose, you can re-use the t-piece from elsewhere.

 

[Damoegan]

http://www.seatcupra.net/forums/showthread.php?t=200030

 

[evo2345]

what size vacum hose is needed? im going to change all the pipes while im at it

 

[kriso]

4mm

 

[evo2345]

does it make much difference bypassing the valve???

 

[kriso]

It makes the Forge 007P give a slighly louder noise. The N249 is a backup to the OEM recirc valve which can fail but not needed if you have an aftermarket one.

 

[evo2345]

cheers kriso

 

[cupra.al]

how much of this 4mm pipe do you need?
also is this backup not needed because the forge valve isnt likely to fail? unlike the oem one.

 

[kriso]

how much of this 4mm pipe do you need?
also is this backup not needed because the forge valve isnt likely to fail? unlike the oem one.

You need no more than 30cm. You should be able to see from the picture...just compare it to your engine bay. Yea the Forge valve isn't prone to failure.

 

[cupra.al]

cheers for that kriso will be doing this when my forge valve arrives.

 

[Ami-Jane]

Sorry guys still a bit confused by the pics

If I just want to bypass the n249 all I need is the vaccum hose - don't need blanking plates or extra T bit?

 

[kriso]

You can re-use the t-piece that you have already, and no blanking plates or anything needed.

 

[richardcupra]

Just done this yesterday and its really worth while, throttle response has greatly improved and the dump valve is agood bit louder now too. Well pleased.

 

[cupra.al]

in this image if it works this time. im wondering if its 1 thats connected to 3 or is it 2 thats connected to 3?
the pipe that isnt connected to 3 is that just left disconnected?
hope that makes sence and the picture shows thanks in advance.

 

[kriso]

1 is connected to 3. 2 is left disconnected.

 

[cupra.al]

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sorry for all the questoions just want to get it right without any problems.
is x connected to y?
also is there only one pipe left disconnected?

 

[cupra.al]

^does anybody have the answer to this question please^. i would just try it and hope for the best but i really dont want to create any problems that i dont need to create.
from what i can guess compareing that picture to my engine X is left disconnected.

 

[Gooner_Mike]

Sorry to drag up an old thread...

Well, I fancy giving this a go over the next couple of days and TBH I am getting a little confused... here is my engine bay as it stands now.

To bypass the N249...
Red circle (pipe to DV) should go to the T-piece in the green circle? What happens to the connection in the red circle now there is no pipe attached?
Pipe in blue circle needs to be capped off somehow. Is that right?

 

[Ric 2001]

Well, I fancy giving this a go over the next couple of days and TBH I am getting a little confused... here is my engine bay as it stands now.

To bypass the N249...
Red circle (pipe to DV) should go to the T-piece in the green circle? What happens to the connection in the red circle now there is no pipe attached?
Pipe in blue circle needs to be capped off somehow. Is that right?

What happens to the connection in the red circle now there is no pipe attached

Nothing leave it.

I've left the blue circle one unattached unbunged

Think your DV is the wrong way aswell