It 'could' be your setup is too free flowing and the wastgate
cant release/flow enough of the exhaust gasses away
Hence the boost rising with the rpm

Just a theaory

Ben

so what would be a way of stopping that?

the down pipe is 2 and half into 3 inch in order to get the bend right!

me and you have simular specs benny so its got to be something silly! as yours works! lol

well... you could TEST it, by removing the wastegate completely, or forcing it to be open all the time. If it still did it then you've found the problem, I doubt it would be that though.

as part of a test i took the actuator arm off and left the wastegate closed (freely)and i had little or no boost up until 5.5-6k rpm then i had about 1.0bar!

if thats any relavence!?

Can you recap all the things you have tried and replaced?

yeah nearly all the boost signal pipes
the actuator
intercooler pipes
ran with and without different dumpvalves
taken actuator arm off
ran with pipes off
changed boost controllers
tried a prv
tried base boost set up


benny came down and had a look at it today


he seems to think that the system is too flowing and that not enough gasses are being realesed. might need an external wastegate or a ported internal wastegate!

anything you can help on there flea?

Ive tried most of the things you listed aswell Goose,Im out of ideas now Its probably something really stupid