Just fixed a boost leak on my turbo 2000, but it one seems to be boosting at just over 1.5bar, but before was boosting at1.2 bar, the car is standard with the exception of a 3inch decat exhaust? Any ideas would be greatly appreciated.

Oh yeh it's a td04 turbo cheers wiggy1

 

bump anyone

 

I take it it was boosting below 1.2 when it started leaking? What was the leak?

 

leak turned out to be the plastic y piece so swopped it for an sti metal one i had, but now im scared to drive it as i dont want to blow it up

 

has it been mapped?

 

no hasnt been mapped waiting for my esl daughterboard to turn up

 

are you sure it wasnt mapped before you had the car?

 

i dont believe so ive checked the ecu and it looks standard, was running just under 1.2bar before i had this problem, now its running silly boost, all ive done is change the intercooler y pipe!

 

In that case you can assume the plastic Y piece has had a small leak for a while stopping it from running 1.5 BAR. Maybe it got worse recently for you to notice.

There must be another reason its running such high boost, and as has been suggested it must have been mapped for it to be happy at that level.

Your actuator should open before it reaches 1.5 BAR, so maybe it has a problem and isn't opening fully, or at the right time. Or the pipework around the actuator isn't plumbed in right?

 

Il have a check around and a play with the actuator, see if it jammed cheers wiggy1

 

found the problem, turned out to be a split vaccum hose to the actuator, acting as a bleed valve boosting properly again, cheers for the help guys