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Flutterdump?

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Benzino33 Experienced

Benzino33

Posted
Posted
What is flutter dump? the otherday a r33 blew past me and did this i wana know how to do this

thanks :)

Are you referring to the blow off valve noise or "turbo dose" noise?

If so here's a thread all about it.

http://www.skylinesaustralia.com/forums/st...Tu-t276031.html

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lineskee 33 Community Regular

lineskee 33

Posted
Posted

i didnt think it was even possible to get wastegate flutter. I think you may be meaning an external wastegate? if the car was really loud going past while on boost, it would be that. its a screamer pipe that goes onto the wastegate. this is illegal to have, but on the right setup it sounds good.

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bradsm87 Proficient

bradsm87

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Flutterdump is when the BOV is a cheap POS or the spring in the BOV is too stiff and U back off and it starts fluttering then the BOV vents. It's considered a problem and can be fixed with a much softer spring. As long as the BOV is plumbed back like it should be, it can be soft enough to stay open on idle without and probs. As soon as U give it the tinyest bit of throttle, it slams shut.

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