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Model specific boards => Golf mk4 => Topic started by: KCP on 01 December 2013, 12:28

Title: lossing boost
Post by: KCP on 01 December 2013, 12:28

hi can anyone help I keep losing turbo boost on my car first time it happened it was a hole in a pipe then it was the n75 valve that I replaced with a new one now its doing it again im thinking of replacing all the pipes with silicon ones and hoping that will sort it does anyone know if it could be anything else 

Title: Re: lossing boost
Post by: davidgtrr34 on 11 December 2013, 19:30

is it hitting good boost and then dropping very fast or does it drop slow.
14 psi is all the map sensor will let you get and then it will drop boost to around 3-5 psi

Title: Re: lossing boost
Post by: joshstanvw on 11 December 2013, 21:52

just for your piece of mind check check and check again all your boost piped i had a hideous issue when my charge pipe disconnected itself whilst overtaking a lorry it just sounded like a massive whooshing when it wanted to boost and when you sat still and gave it a small rev it sounded like it had a badboy blow off valve lol (embarrassingly it took me 45 minutes to find a pipe that was completely disconnected)

Title: Re: lossing boost
Post by: Wazzzer on 11 December 2013, 22:14

Actuator?

Title: Re: lossing boost
Post by: KCP on 05 January 2014, 11:44

hi
 some days it works fine other days it just was not there I have changed my pipes for silicon ones and I think it has done the trick
 :smiley:

Title: Re: lossing boost
Post by: KCP on 05 January 2014, 11:46

how can I tell how much psi I am getting?

Title: Re: lossing boost
Post by: Wazzzer on 05 January 2014, 12:17

what engine code do you have? Easiest way is a boost gauge although on the models with a MAP sensor you can read it off VAG COM

Title: Re: lossing boost
Post by: KCP on 07 January 2014, 14:27

its a AGU is that what you mean ?