Your bov is sticking shut or something is jamming it from opening, so instead of it letting the air out its causing it to go back through the turbo and out the intake causing a flutter noise.
This is the noise you would hear if you had no bov at all.
Ive heard of people being defected for a bov when all it was was flutter, doesnt matter, once you get to regency they will get you for ever single other thing thats wrong with it. Leaks, old susp, worn mounts everything.
The dark shed is a good way to tell, warm the car up and run it in a dark shed with the valley cover off, spray some water mist over the top, if they are cracked you should see small blue arcing. Go easy on the water though.
Here are some good threads discussing it, but yes you basically block off or tighten your bov so much that it barely lets any air out.
http://www.skylinesaustralia.com/forums/in...&hl=flutter
http://ausrotary.dntinternet.com/forums/vi...bov&start=0
Did it flutter when he throttled off? or just the whoosh of a plumback?
If you want the flutter block off your bov.
Since when do rb25s sound like a v8? they have that distinct skyline roar.
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You weld the spider gears together (read on www.howstuffworks.com what these are).
This basically means each wheel will always spin the same speed, when cornering the inside wheel has to turn less then the outside wheel, so basically the inside one will lock or the outside wheel will have to spin. Basically it means you'll go sideways all day long.
Normal street driving itll be a pain in the ass, tight u turns will just make the car understeer and be impossible unless you get the wheels spinning slightly. Hard turns will give the car a tendancy to understeer unless you power on and then it will oversteer. Car parks will be alot of chirping and noise.
Basically if its a daily driver it wont be much fun unless you like to get sideways everywhere. Wet weather driving will be even more fun/dangerous.
For drifting its pretty awesome for the cost compared to a 1.5/2 way mechanical LSD/locker
I think we would all like to hear it. Whats it like on the street, does it just burst into wheel spin as soon as you get on boost? looks like it would be a handful to drive fast.