Hi all,

Yesterday i noticed the car was quite down on boost, , pushing out .6 - .8 in 2nd and third, i thought it felt slower but in the back of my head thought i might be fooling myself and it might just be the Boost gauge reading.

I booked the car in for Thursday but in the meantime had a route around and found that a small pipe connected to the front Diverter Valve had a tear in it.....

Straight after i got the remap the car was boosting 1.2 consistantly, however has gradually dropped a bit to where it was boosting 1-1.1 before yesterday....so im hoping this is the problem.

Would this rip cause a loss in Boost pressure AND what exactly is this pipe???

Thanks in advance.

 

Yes it would! This is the hose going to the diverter valve (DV) to control the release of boost pressure.

 

Thanks, so if the hose is there to release boost, how would it cause boost loss?? Thanks for the info

Hopefully when its sorted il be back to 1.1/1.2

 

Well, that hose is a pressure hose that pushes the diaphragm on the DV when the pressure becomes too great. Most likely, it was leaking causing lower boost and probably a higher surge when you let off because the DV would not be pushed as much.

 

That makes sense as it was surging when i let off the accelerator more thn usual......

Thanks alot bud

 

No problem - have them boost leak check it once they replace the hose! So many things that could leak - best have them check it while they are in there!