Hi, just got a great little copen for my wife, its the big 40. Its sat in the garage waiting for the big day, ive sorted the paint work, got afew nice leather bits with red trim from ebay, red floor mats and a nice chrome and wood boot rack. But id like to improve the performance alittle, or at least make it sound quicker. Ive seen lots of info on here regarding different air filters, the best looking like the hks mushroom, ive been on ebay, but there are many different sizes and i could find a kit. Does anyono know the size hks filter i need along with any other parts?
Hi Fraz, HKS filter will surely give it a bit of a oomph to your car. I've installed it few months ago and certainly it's noticeable. But the problem with HKS filters is that it makes weird scratchy noise when the air is sucking in. Maybe it's just me but when I take it off, I get none of that sound.
Hi, i had seen that the hks filter were the ones to go for,but wasnt sure whether i needed the 80mm or 100mm neck? Also do these fit directly onto the intake or do i need to purchase some hosing? Cheerd
changing filter doesn't add much, if any, extra power. especially just on its own. I don't know if turbo cars are affected more or less than naturally aspirated. You can get better throttle response. But that also comes from improving the flow with in the inlet system.
Its a 2004 turbo version, not overly worried about getting loads more power, but if i could get it to sound abit more meaty that be be great, its already got a sports exhaust which helps, but i know when ive fitted induction kits to car in the past you can really hear it when you hit the loud pedel. Other than that the car is great, my wife loves it and i got loads of extras off ebay to make it bespoke, black leather trim part with red sti'ing, red fllor mat, a front spoiler, red wheel nuts and a great chrome and wood boot rack, bit of a pain to fit but found some very useful tips on this site. I also got some red carbon wrap and did the plastic radio and heat control surround.
adding a induction will help the car breath better, all the 659cc turbos daihatsu engines fitted in the miras,moves, copens are all restricted big time by the exhausts,air filters and intercoolers, swap all these bits over for aftermarket more free flowing parts wil realises a lot more power, a de-cat also makes a massive difference, with these mods it will realise a lot of power, and with a bit of boost increase to 1bar you will be running around 80-85bhp once ive got my new copen home i will making most the bits myself as ive done my avanzatos and will post up how to guides wand links to the parts as i refuse to pay £120 or what every it costs for a copen specific induction when one can be made for £30/40 and a couple of hours of spanner time
the scratchy noise is the turbo spooling up and boosting, as the compressor blades spin at crazy rpm, like a food blender blade but the turbo is mixing air which creates the sound you are talking about MRcopen
ive just gotta get the roof working first then will make a start, if its any thin glike the avanzatos it will be easy and very cheap
