Here's some rolling roads graphs, one of an slightly tuned eaton G40 and one of a Tuned G40.
Here's the spec's of lreg's old eaton setup
induction> Large induction K&N cone air filter, port matched GT inlet manifold, 51mm throttle body.
Type of forced induction> Eaton
Intercooler> AW tracksport
Pulley> Toothed pulley kit
Cylindor head> Standard
Camshaft> Standard
Exhaust Manifold> Standard
Exhaust system> Stock decat downpipe and 63mm bastuck system, single silencer
Fuelling> Stock ECU, green injectors and a PSD remap with an sns stage V base code
Headgasket> Standard
Pistons> Standard cast 1272cc
Rods> standard
Crank> Standard
Flywheel> Lightened
189bhp and 162lb/ft of torque which was not bad considering the amount of standard parts still on the car
And here's the spec of a g40 engine:
nduction> Jetex cone filter, Jabba cold air box, dewedged TB, standard intercooler + chargecooler, GT inlet manifold
Type of forced induction> G40 R1
Pulley> 65mm toothies
Cylindor head> Standard
Camshaft> standard
Exhaust Manifold> 4 branch PSD
Exhaust system> 63mm bastuck, twin silencer
Fuelling> PSD chip not a custom map, standard injectors
Headgasket> Standard
Pistons> Standard cast 1272cc
Rods> standard
Crank> Standard
Flywheel> Standard