Car is running fine with no issues-

but the turbo is only working on spring pressure. 1 bar@3500-4000rpm then 0.8 bar 5000-7500rpm

Any ideas before it goes to the garage?

 

What is the car?
Sounds like normal boost pressure to me.

Tony

 

Sounds like standard boost levels to me to.

 

The car is an 02 sti ppp. The only mods are tubular manifold, no cat, ecutek, 20g, 3" nur spec. When the car was mapped last time it would not budge beyond 1 bar. the car made 320bhp but the torque was down to 220nm. In other words my clutch is having an easy time at the moment.

The only other thing is when i release the excellerator i get compressor stall before the blow off valve gets chance to work!!!