Thanks Mark
I think my car is just more on the limit than others and needs the intercooling air to work efficiently.
On the road and track, it has nooooo problems
Granby 336bhp / 315ft-lbs
STi panel filter
VF34 turbo
STi intercooler
Forge dump-valve
Full Decat
Ninja backbox
Remap by Bob Rawle
Pele 291bhp / 284ft-lbs
PP 281bhp / 246ft-lbs,
Full de-cat
VF30 turbo,
HKS yellow filter,
blitz dumpvalve,
Standard ECU, map and intercooler
Padtwo 271bhp / 265lb/ft.