Dyno only shows full throttle dyno pull it doesn't show part throttle response, The Uprev main gain is the lower gear throttle response as well as the fueling and Ignition maps set up for the mods added.
Running the HFC's always makes the car loose a little torque at under 2000rpm on full throttle but how many times do you drive a car like that , full throttle 4th gear under 2000rpm?
Running without the plenum spacer will lose the normal gain in Mid range torque as well.
Also the dyno plots isn't your car stock versus you car after fitting the Abbey Motorsport performance package, we fit the parts then run the car on the dyno with the stock car ECU map then remap the car. So it is a before and after remap dyno plots NOT stock versus APP ( Abbey Performance Package)