0.5 bar boost

Started by 907, October 09, 2008, 09:49:40 PM

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907

I think I\'ve probabbly done something stupid.  I have just replaced all the hoses in the rats nest and surrounding area, after having had one crack recently and another pop off at a trackday.  Having put it all back together the car runs fine except for that it won\'t hit more than 0.54 bar boost on either turbo.  I\'m guessing I got something wrong when I swapped all the hoses over, Anyone any ideas on where to start looking, I\'m thinking it could be the waste gate control.  
Cheers Neil

nikp

0.5 is what the wastegate spring pressure is, so sounds like you\'re running off just the wastegate.

m1tch

FC boost levels in an FD :) Im guessing perhaps a solenoid?

BenLewisMav

I\'m having a similar prob (perhaps), the boost pattern seems to go-
0.4 Bar, drops for a second around 4k, then 0.4 Bar again... Can only presume its running off wg pressure for both turbos, I guess at least it should make the engine last a bit longer and reduce the chance of it blowing!?

adib

hi neil are you got a fd or fc, if its a fd then 2 off the bigger pipes that open wastegate have pills in them if u have changed them or you just done rats nest

Clarky

Have a look at the check valves if you have removed them, could have put them back wrong way round, or gone faulty.
Lead me not into temptation, I can find it myself...
But i can always do with some help now due to, my advancing years!

fil_auto

That sounds about right for me too!! Something one needs to look into asap!

I took off all the induction setup and pipes over the weekend to have a look around / investigate..... and found the pipe to the first turbo ( from the induction kit ) was ( uing someone elses superb phrase ) \'flappin around like a prick in a sleeve\'!! #;o)...... so i thought sorting that / tightening would resolve..... unfortunately... no joy!! Boo hoo......... so after seeing your post I wonder if mine is suffering the same sypmtons?!

Phil

Quote from: BenLewisMav;544006I\'m having a similar prob (perhaps), the boost pattern seems to go-
0.4 Bar, drops for a second around 4k, then 0.4 Bar again... Can only presume its running off wg pressure for both turbos, I guess at least it should make the engine last a bit longer and reduce the chance of it blowing!?

907

Quote from: adib;544174hi neil are you got a fd or fc, if its a fd then 2 off the bigger pipes that open wastegate have pills in them if u have changed them or you just done rats nest
Yes its an FD and yes it was the two pipes that I replaced without realising that they had restrictors in them.  Knew it was something stupid I had done.
Cheers for the help.
Neil