Not for me the idea of taking out half the trumpet and saying I've gained 30 BHP at a stroke , a better idea would be to add another air intake to the airbox, especially useful given that my 2.0T has been remapped.
The first thing I considered using was 32mm plumbing waste pipe fittings, so I bought a couple of metres of pipe and enough elbows and angled joints to start WWIII, but soon realised it was all too bulky and the pipe just wouldn't be able to wend it's way past all the hoses, cables and A/C plumbing that blocked the route from the grill to airbox. Even if I could find a convoluted route, the only way it would have been able to connect to the airbox would have been from the front side, where it would have made it impossible to change any of the O/S headlight bulbs in the future.
Then, whilst idly looking through a hardware store I happened upon some flexible plastic pipe. Not a hose, which could kink, but an expandable pipe that can be bent in any direction and stays that shape, and it even looked the right length. If I was the patient sort I would have gone on the net and tracked down a black version, but I'm not so I bought it there and then, for the princely sum of £3.50.
The first thing to do was to remove the airbox and cut a hole in the corner which is nearest the grill, making sure the hole is such that the flexible pipe is a very tight fit.
Next, remove the pipe again so that the airbox can be refitted to the car, (there was no chance of the airbox going back in with the pipe still attached). Then, try to refit the pipe once the airbox is back in place. Then swear and kick some things when you see how awkward it is to manouvre the pipe into place and force the end into the hole that you purposefully made stupidly tight. After 10 minutes of trying, I realised that I had to try and move a lifting bracket on the engine that was in the way, but after undoing the bracket's bolt three quarters of the way, the head of the bolt was hitting the engine mount and wouldn't undo any further - clearly the bracket was bolted on before the engine lowered into the car. With the bolt loose, I was able to twist the bracket out of the way somewhat, which helped.
With the pipe fitted to the airbox, it was just a case of stretching it to the right length so that it wends snugly to the grill and sits beside the existing air inlet.
I haven't been for a test drive yet, as I forgot to fill up with petrol yesterday or today, so that will wait until tomorrow; but with the engine idling I could feel the air being sucked in through the new intake . In the morning I'll try and find out if it makes a difference.