When i owned a my00 uk turbo.It had a full hayward and scott decat system ,jr panel filter tek3 remap by Andy f and the tdo4 would hit 21psi when the exhaust gas temp was 800deg from second gear onwards .Before it reached that temp it would go up to 16.5psi .Still the standard fuel pump and regulator.Never had it on the rollers .So don't now what power it had