Commonly referred to as the "Oily Mod", taking a screwdriver and soldering iron to your standard 48mm Rover throttle body is said to give 90% of the gains that swapping it out for a 52mm throttle body would give.

So, armed with a little knowledge dished out by the great man himself, I set about modifying my throttle body.

Removal was easy. Dismantling the throttle body was also quite easy. I'm good at taking things apart. The wedge was removed from the butterfly, leaving two gaping holes. With the edges chamfered, and the holes filled with far too much solder, I filed it flat and refitted everything.

For once, I managed to put everything back together ok! I reset the IACV and TPS (I think...) just for good measure, and guess what? It worked. I doubt it's gained any more power, but the response seems greatly improved. So for the grand total of an hour of my time and 6" of solder, I think it was well worth it.