not really heard any good things about magnex on 182s TBH.
Groupbuy price still available for Blueflame, they designed the system to be unobtrusive at motorway speeds, havent got mine yet so cant really comment. But pics and vids below... price £231 + £15 delivery with lifetime warranty, it's 3" pipe from the cat back and 3.5" slash cut tailpipes.
feedback from owners:
"At idle it sounds meatier than the original but not obtrusive and when your just normally driveing/motorway it isn't obtrusive or 'boomy' but when you put your foot down it sounds really good and gradually starts to 'whistle' as you get to around 7k."
"bit boomier than standard at 80, around no overly loud, you don't get any unwanted attention so not gonna scare old dears. find a tunnel and you won't care. mate of mine was set on a ctr, took him thru some of the queensway tunnels in brum, he's gettin 182 in july."
"Blueflame exhausts are designed for the enthuiasts i.e. they are a bit meatier than standard but not obtrusive and as quiet as possible at motorway speeds. Its more a quality thing than a noise thing."
"i bought mine about 2 months ago for around the £300 mark and its worth every penny. Any one wondering if its worth it or arnt sure just do it you wont regret it! it can be loud between 3-4k but its bloody good fun."