Originally Posted by
pamdam
who is jano? I am new to the forum. I set the turbo on my volvo 850 t5 up my self it works great with an mbc set to 1 bar nice an safe very quick with 250 bhp. but the set up on this rs makes no sense to me and even with the mbc in place the boost goes all the way up.
i had a similiar problem with a bleed valve. in the end used the amal valve instead with no problem. just a thought, try changing the hoses that run from the hsg/bleed valve/actuator. a split here will cause overboosting.