Dump valve fitment

Discussion of technical issues and ideas (engine, chassis)

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Sokar
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Post by Sokar »

OK, it does kinda help with that... but it also adds some negatives.

If mr Driftmeister hasnt bought the valve yet, why not look at fitting a diverter valve? Basically the same as a dump valve, but it will push the air from after the IC back into the pipe after the MAF, before the turbo...?

This will keep the engine management very happy. However there will be no dump sound at all, but if thats the reason you're fitting it, its the wrong reason!
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HancoB
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Post by HancoB »

Now whats the fun in that????? Thats y the man wants a BOV! To go tsssshhhh next a hot babe in her golf or something!! :lol: :lol: :lol:

Ja Sokar is right! You tend to run rich when fitting a lucky packet BOV! That can be sorted tho!!!
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rat
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Post by rat »

Is there any difference before after the IC?

Why is it not a good idea on a stock setup and what about a modded setup?
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mario_200sx
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Post by mario_200sx »

Sokar is correct,

There are some negatives involved with using a dump valve or BOV.

Like ero said, fuel consumption, because your car runs richer on the time you change gears. Your airflow sensor is fooled so it runs richer. Wiki BOV and it gives a good explination.

If you use a recurculating BOV that would not be a problem. But you will not have that sound. As Sokar said, if you are doing it for the sound, it the wrong reason.

Im boosting just ova 1bar, and it is far too high, and I run a hybrid turbo, so I put on a BOV (Hanco's one for now, till my new one is fitted).

You can feel the difference between shifts, doesnt make your car make more power, but makes you utelise(spelling???) your power better.

What type of cons are you also reffering to Sokar?
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HancoB
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Post by HancoB »

Only that you are gonna dump hot air before the IC or cold air after the IC!
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mario_200sx
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Post by mario_200sx »

I agree with hanco there. Thats why mine is being changed. There is people that feel different, but the top okes say before the intercooler, so then I put it there! :wink:
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HancoB
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Post by HancoB »

So I'm a top oke????

Awwww thanks Mario!!! :lol: :lol: :lol:
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mario_200sx
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Post by mario_200sx »

:roll:
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Driftmeister
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eish

Post by Driftmeister »

heres a pic of the one i got

Image
HancoB
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Post by HancoB »

Oh gosh!!!!

I see a leak comming!
Driftmeister
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E

Post by Driftmeister »

HUH ?
HancoB
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Post by HancoB »

Well ask Mario, we had one of those on his car! And it sounds awseome but it leaks! Doesn't close properly on idle!
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mario_200sx
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Post by mario_200sx »

Hanco, dont be an ass! He's might work!

Look, ive had one of those and it leaked, thats why he said that! But im boosting way too much, so maybe it wont leak with yours...
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Driftmeister
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Post by Driftmeister »

if i blow through the bottom section it should seal right ?
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Sokar
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Post by Sokar »

The cons have pretty much been covered... Glad to see you guys are starting to think :P
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