boost pressure dropped

[Rossco]

i have just change the manifold and now the boost pressure has dropped does anyone know what the problem could be?!

 

[Big_Daddy]

you checked for leaks? all ic piping nicely tight? what manifold did you fit>

 

[Jay]

If you were upgrading to a more free flowing manifold then it's natural to see a slight drop in pressure. If you have just changed to an identical unit then a pipe may be loose/leaking slightly.

 

[Rossco]

i have changed it for a free flowing manifold and all the ic pipes are nice and tight, could it be the gauskets?

 

[Rory]

If you were upgrading to a more free flowing manifold then it's natural to see a slight drop in pressure.

See above...
Could also be gaskets, but you would know if they were not sealing properly

 

[pilgrim_fgau]

just fitted a free flow manifold myself and noticed a small decrease in boost pressure by about 2-3psi, after a while one of the gaskets blew, you would no if the gaskets were leaking by the sound coming from under the bonnet..

 

[addz]

Also noticed a small decrease in boost.

Time to fit my long awaited HKS actuator

 

[JasonGlanza]

gaskets should be changed whenever you replace something, thats the better way to do and be sure that everything is fine!