Loss Of Power Over 10psi Boost?

[Drakey]

Hey peeps,

Bit of trouble im still having trouble pin pointing. I have a r32 with a r34 turbo, cooler, adjustable cam gears, all tuned etc.

The car used to run 14psi quite happily. But all of a sudden it started playing up and now i cant run over 10psi without losing a heap of power!

It boosts up to 14psi no worries but it loses power strqight away. It still revs up but definatly not as quick as normal. It also makes a weird running sound when doing it. Almost like the car cant get enough Air.

I have checked all piping and airbox, connections etc and i cant find an issue.

Has any body else had a similar problem or would know what is causing this problem?

Thanks heaps!

[QWK32]

could be maxing out your AFM. or if you have the stock rubber pipe from the AFM to the turbo, that can suck closed causing a restriction.

[R31Nismoid]

Get it on a dyno and see whats going on.

The AFR's might tell a story. Fuel pump might not be right?

Maybe slightly leaky cooler piping (just cause you checked doesnt mean you found it) etc.

Either way its very hard to tell without seeing the car.

Go have a chat to a workshop

[Al]

May also be coil packs breaking down, etc.

As Ash has stated could be a whole range of issues, causing this type of fault, a knowledgeable mechanic will be able to sus it out quick enough.

[dmr]

in most cases it would be cooler piping, but it might even be a stuck actuator?