n249 problems

[ash_st]

i have a leon 180 with a k&n air filter, turbo smart recirc dump valve these mods where on the car when i brought it. i have had a diagonstics check and it shows
Boost Pressure Control Valve (N249): Mechanical Malfunction
Pressure Drop between Turbo and Throttle Valve (check D.V.!)
Charge Pressure Control: Negative Deviation
as anybody else had these problems or can any1 advise me? cheers
ash

 

[Vin-R]

Hi Ash, heres what I think those problems are, had same ones on my 1.8T golf some time ago:

Boost Pressure Control Valve (N249): Mechanical Malfunction

The N249 valve may need changing, or you could just do a search on here for the N249 by-pass which will take the N249 completely out of the equation, which will result in more response when you put your foot down, and should hold boost better, or you could change the valve if you prefer.

Pressure Drop between Turbo and Throttle Valve (check D.V.!)

This my friend is a "classic" fault that is quite common, try and change it for a Forge 007p Diverter Valve. Youll notice that ALOT of forum members will be running the forge. Its a re-circulating valve just like the standard one. but alot lot stronger, and holds boost better and gives you a faster response on gear change. Or you could try adjusting the turbosmart if poss ??

Charge Pressure Control: Negative Deviation

This one im not too sure of mate.. but im sure others will add to this thread. i hope the above helps though.

Vin

 

[ash_st]

Hi Ash, heres what I think those problems are, had same ones on my 1.8T golf some time ago:

Boost Pressure Control Valve (N249): Mechanical Malfunction

The N249 valve may need changing, or you could just do a search on here for the N249 by-pass which will take the N249 completely out of the equation, which will result in more response when you put your foot down, and should hold boost better, or you could change the valve if you prefer.

Pressure Drop between Turbo and Throttle Valve (check D.V.!)

This my friend is a "classic" fault that is quite common, try and change it for a Forge 007p Diverter Valve. Youll notice that ALOT of forum members will be running the forge. Its a re-circulating valve just like the standard one. but alot lot stronger, and holds boost better and gives you a faster response on gear change. Or you could try adjusting the turbosmart if poss ??

Charge Pressure Control: Negative Deviation

This one im not too sure of mate.. but im sure others will add to this thread. i hope the above helps though.

Vin

erm my dump valve is adjustable but im not sure on how hard or soft it shud be i think its a super sonic 1 from the pic off the website.i can upgrade the spring in the dump valve would that help with the pressure down? thanks for your help.