The air filter is not easy to get to, its in the black box near the battery and has the meter head and fuel filter fitted to the top of it, there is 4 or 5 clips around the box which are not easy to reach. Un clip the clips and lift up the top, you can only just lift it enough to pull the filter out from the side of the air box facing the engine, when refitting becarful not to trap and wires going to the battery.
I fitted a K&N air filter as you don't have to change it every year and they come with a million mile warranty, you do need to clean and re oil it after 100,000 miles!
So you can just leave it in there and job done, I do remove mine, bang out any thing stuck to the filter and clean out the air box as leaves etc gets blow in there but I just check in there when replacing my fuel filter as it's easier with that out of the way.
The filter will pay for it self over time, I've had mine for 17 years so it's has paid for it self by now...
Places to get one. Make sure it's for a injection car as carb ones are smaller, Mk1 golf cabriolet and early Mk2 golf Gti with the DX engine all use the same air box and air filter.http://www.eurocarparts.com/ecp/c/Volks ... 424&000522
Cheapest place I found so far. https://www.amazon.co.uk/33-2002-Replac ... delId=1948
I believe the part number is 33-2002 from the K&N website but please double check.
Mk1 78 Scirocco GLS 1.6 FR, weekend toy.
Mk1 88 Golf GTi cabriolet 1.8 DX. Daily drive.
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