Hi i have a XR2 which is concerted to run S2 MFI, the engine has a stage 3 Hybrid would this turbo explain why the car only starts to boost after 4K or is there another reason for this? Actuator spring, just needing setting up??? etc. I am booking the car in for a RR session but would hate to take it there and pay the money only to be told that if i had fixed this they could of set it up better. Thanks for your help in advance