are you not getting heat soak with that filter, as turbo engine's run very very hot. my astra turbo lost around 6bhp on the rollers with a open cone filter on over the standard air box
__________________
Astra GSi turbo
Regal Autosport Astra GSI Turbo 304 bhp 356 lb/ft
Thorney motorsport Vectra vxr 305bhp 398lbft
Now its time to build a big turbo MG ZS
|