I chucked my whole 3B airbox assembly out I'm afraid. I replaced the filter with a thwacking great big cone I got off ebay which bolts straight on to the MAF, for about £20. I kept the 3B heatshield to try and protect it against the heat of the turbo, and then bought a run of flexible air intake hosing from my local builders merchants for about £3 to try and force cold air in.
I also took the opportunity to clean the MAF with the usual "Soak in isopropyl alcohol overnight" technique, and while that was all out I was able to change the sidelight bulb which had blown, and was the whole reason I took the airbox off in the first place - once it was out I couldn't be bothered to put it all back in again!
Couple of things: with the big cone, I'm sure I get a quicker turbo-spool up, and I get funny burbling noises from the wastegate when I come off throttle.
The cone/MAF assembly does seem to move around in the engine bay a bit now, I guess because it's not mounted on the wing of the car, and the MAF hose is a flexible one.
All good fun anyway.
I also took the opportunity to clean the MAF with the usual "Soak in isopropyl alcohol overnight" technique, and while that was all out I was able to change the sidelight bulb which had blown, and was the whole reason I took the airbox off in the first place - once it was out I couldn't be bothered to put it all back in again!
Couple of things: with the big cone, I'm sure I get a quicker turbo-spool up, and I get funny burbling noises from the wastegate when I come off throttle.
The cone/MAF assembly does seem to move around in the engine bay a bit now, I guess because it's not mounted on the wing of the car, and the MAF hose is a flexible one.
All good fun anyway.
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