There are 3 different bolt-on options from K&N for your model MX5:
Part no./Kit name
1) 69-6000TP K&N Typhoon kit (as above has polished or other coloured intake pipe, pod air filter & removes airbox).
2) 57-0559 K&N 57i kit (Bolts straight onto your AFM, has a duct for cool air from below & removes your airbox).
3) 33-2676 K&N Replacement Panel filter (fits in standard airbox).
4) I also noticed this on MX5partsUK; IL Motorsport CAI kit, looks good on paper but has anyone have it in their ride?
http://www.mx5parts.co.uk/motorsport-cold-induction-mk225-p-2225.html
Extracted some of this info an old thread. Wanted to get some advice as I'm looking to getting my car breathing a little better and having a little bling under the hood. I'm not too concern with the swirling or noise factor, just thinking which system is more efficient in giving a bit more performance. Other suggestions of kits are appreciated too, preferably those that don't require me cutting through stuff.
Next question,
Mainly for items 1 & 4, Would it be advisable to just buy it online and fix it myself? or should I consider getting the experts like MX5 Centre or MX5 Factory to do it for me or buy the kit from them? (not really a grease monkey and don't really have any tools, but if its gonna save me heaps of $$ and straight forward, i'd attempt it). Thanks!