I think we all know your opinion is worth a bit more than 2p :wink:
This is true. Anyone wanting to see mega NA tuning should also look up Adam@Z1Auto's car. Headline figures arent massive for the amount he spent (320WHP IIRC) but he had eveything lightened and balanced. On a track it would be a beast and massive fun compared to an FI'd Zed.
NA cars will always have limited tunability. In FI cars, turning up the boost is effectively increasing the relative displacement of the car. The only way to get that NA is to get a stroker kit or similar to increase displacement.
Does my nutt in when peope say "but for £200 my old Evo/Scooby/other FI car I got 100HP extra, why cant I do that on a Zed", and yet claim to know how car mechanics, turbos, SC, etc work (not aimed at the OP BTW)
Trust me you wont notice the small difference you gain so much, but as Will says, once they are gone again and you are back to stock, you sure as hell notice