After going on about how they didnt improve performance etc etc Iv gone & fitted one just now at work!! Quite simple, took about 45mins & no disasters along the way, quite unusual!
Points to note:
Fuel comsumption will go down as I have suddenly developed an intermittent led weighted foot especially in 2nd & 3rd gear!!
The noise is fantastic! Though the downside is that I cant hear my Fujitsubo exhaust as much, which I used to really like the sound of before
The air filter cone itself does seem to get quite warm afetr a drive, I dont know whether the old air box would have got as warm from the inside! Heat soak was one of my concerns before fitting. So has anyone used some kind of extra heatshield / heat proof material to either cover top of filter or stick to underside of bonnet?
The engine at the moment does seem more free to rev & less constrained by engine (gear) braking. In fact it seems to be slightly more responsive when I blip the throttle. Whether this will stay the same after ECU has adapted, I dont know?
All in all £67 well spent
I used the fitting instructions supplied for final fitting of intake, but more usefully used video below for removing old filter which it made so easy
http://350zroadsterclub.com/images/mods/popCharger/PopChargerSmall.mpeg