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plz read this if u have a bleed valve

WazR32GTSt
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2rismo Grand Master

2rismo

Posted
Posted

bleed valves will always always always spike then return. manufacturers can argue this point till they're blue in the face but they're shifting the truth sideways... :(

dna make the best one that I have seen in practice with a significantly smaller, (but still there) level of spiking. boost leveles also remained steadier than the turbosmart ones they had there too...

i think they wanted 80 bux for the ones they had at the dyno day.

** I have no assocition with dna whatsoever. just calling it how i saw it **

Sime Contributor

Sime

Posted
Posted
Originally posted by Nizmo

yeah i have dodgy homemade one on my car .... it was like that when i bought it - does do the job but not as good as a proper one - lets just say its as open as it will go on my car :(

I had to drill my homemade one out a bit to let more air through. Now I can adjust between 7 and 15 psi. It hits 12 psi at about 3500rpm and stays on it all the way to the redline.

DennisRB30 Community Regular

DennisRB30

Posted
Posted

"does it bring on boost earlier"

Originally posted by 2fardown  

This is a very debatable subject.  I personaly did experience an earlier spool up but there are some experts on here that will prove otherwise.

No expert can prove that they won't bring on boost earlier for the simple reason that they do! OK, before anyone gets all emotional, they can never do as good of a gob as a EBC but they WILL help.

Read this, It is explained how bleed valves do it.

http://www.skylinesaustralia.com/forums/sh...ght=bleed+valve

If your going to muck around with bleed valve systems this is a good thread to read as well.

http://www.skylinesaustralia.com/forums/sh...ght=bleed+valve

Cubes Grand Master

Cubes

Posted
Posted

My R32 holds 10.9PSI all the way to 7500rpm if I take it there.

With the Bleeder no matter what I set it to it would drop down to around 12psi. With the stock IC it would drop to around 12psi and with the fmic it would drop to 12psi. It is the turbo running out of puff.

The max I could get out of the bleeder (rwkw) was 155rwkw.

When I fitted the FMIC a lighter tune with less timing and holding 1 bar of boost to redline made 164rwkw.

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