Well guys, I took my forge kit off today just to see since I had a spare 10mins and took it out for a drive...
I dont care what anyone says about the forge kit being crap but my one at least makes a big difference to my cars vroom. Its much, MUCH better with the induction kit. Less heatsoak too, first time ive noticed any this evening. Only way I can explain it is that the car's power is more muted.
So then... plus points to taking box off. £50 cheaper insurance.
PLus points for the induction kit. More power, More noise, less heatsoak and looks pretty kool.