Milehighgti
New member
Hey!
My 07 GTI has been having issues recently with boost. When it's around 15 in-hg it fluctuates from 15 down to 10 over and over and you can feel it and hear it. It stops as soon as you push past 15 in-hg. also doesnt hit boost as fast and only gets up to 8-10 psi if I really step on it. Obviously a boost leak somewhere but unsure where. it's unlikely it's charge piping because it was completely fine until it sat for about a month while I was away. I have replaced my diverter valve with a Rev d yesterday, and no change and it now makes a slight hissing/whistling noise that wasn't there before when spooling up. I have a ton of parts for it as I put a new motor in it and most of the parts from the old motor are still good. Going to try to swap out the PCV after work and see if that changes anything
Just wanted some opinions and suggestions before I just start pulling piping and resealing/replacing.
New here btw
My 07 GTI has been having issues recently with boost. When it's around 15 in-hg it fluctuates from 15 down to 10 over and over and you can feel it and hear it. It stops as soon as you push past 15 in-hg. also doesnt hit boost as fast and only gets up to 8-10 psi if I really step on it. Obviously a boost leak somewhere but unsure where. it's unlikely it's charge piping because it was completely fine until it sat for about a month while I was away. I have replaced my diverter valve with a Rev d yesterday, and no change and it now makes a slight hissing/whistling noise that wasn't there before when spooling up. I have a ton of parts for it as I put a new motor in it and most of the parts from the old motor are still good. Going to try to swap out the PCV after work and see if that changes anything
Just wanted some opinions and suggestions before I just start pulling piping and resealing/replacing.
New here btw