Help to identify part on Mk4 1.8T

[SLAJ]

Hey Guys,

I was hoping that somebody could help me identify this part and what it's purpose is. It's on a friend's recently purchased Mk4 Gti. He is running a N75J valve and it is connected to the pipe running down from that towards the turbo.

Sorry if this has been covered before, but i can't seem to find anything on it.

Thanks,
Slaj

[Lito]

That's definitely not stock. Is that the line going from the n75 to the waste gate? Could be a bleeder valve?

[SLAJ]

That's definitely not stock. Is that the line going from the n75 to the waste gate? Could be a bleeder valve?

Yeah from the n75 to the wastegate, i've never seen it before. The only thing i could think of is that it might be there to block boost spikes from the N75???

[h100vw]

Shouldn't be any boost spikes if it's tuned right and definitely not on a std car. It is a bleed valve though.

[gazzmo]

Looks very much like a anti-hammer device similar to domestic water application.

[SLAJ]

Shouldn't be any boost spikes if it's tuned right and definitely not on a std car. It is a bleed valve though.

Thank's Gav, The car hasn't been tuned yet, the only mods so far are 3" TBE, N75J valve and this thing all done by the previous owner

[Lito]

He probably put that bleed valve in for extra boost. I say take it out and get a proper tune. More boost without more fuel is not a good thing

[SLAJ]

He probably put that bleed valve in for extra boost. I say take it out and get a proper tune. More boost without more fuel is not a good thing

Thank you man, and yeah it boosts about 10psi on a stock tune... So that sounds right. He is planning to tune soon so i'll make sure he takes it out then.

Thanks for the help