Help,

Car loosing boost around 5000rpm and have tried everything ie, changed turbos, boost control valve(blitz), conzult and simple things like loose pipes etc.

We have a show this weekend and cant quite figure this one out.

Any help much appricated

thanks. :cry:

Have you done a boost leak test?

 

Do you have a boost controller or just a valve? A valve will not give you a steady boost. They usually peak and then settle down.