87uk944t

Just got my car back together but have discovered that my car is boosting to the 18psi i have set it at then it is dumping boost and dropping from 18 down to 10 psi in one go, no gradual roll off of boost, then picking up again to maybe 12-13psi before changing gear, any ideas how this could be happening and could this be related to me not getting any boost till 4000 rpm??
tia for any help

pikey7

leaky wastegate or wastegate line? The line maybe your vacuum source problem too????

87uk944t

a brand new tial has just been fitted, my line from reliaboost to wastegate does have a join in it tho, have a new bit of fuel hose lying around that i bought for replacing it with,will try changing that tomorrow

pikey7

Just trying to think if it's maybe a BOV issue too? Can't get my brain working today though.....

87uk944t

i have a lindsey bov with only a few thousand miles on it so hope it wouldnt be that