im shark performance not revo
however my car is now on stage 1 after previously being stage 3, then as mods were removed downgraded to stage 2 and then woith all mods on i went back to stage 1.
the thing i noticed is from low revs the stage 1 pulls like a horse but tails off extremely quickly in comparison to stage 2 and especially stage 3(revo stage 2+).
the way i see it, the stage 1 gives you the feeling that your car is fast with its initial surge, however the stage 2 spreads that torque out over an even wider power band, meaning the car doesnt feel as quick initially however it is way more progressive and the torque doesnt tail off like stage 1 either so the car pulls stronger and for longer.
100% worth the 50 quid extra