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Begi S2 Blow off valve

Old 03-20-2009, 06:03 PM
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Default Begi S2 Blow off valve

What options do I have to convert the recirculation valve to a BOV (to the atmosphere)

I like the noise, some dont, I do.

What is involved on an 03 with a MAF/Xede

Can it be done with out messing up my tune?

I tried it with the Begi recirculation valve just for fun but the thing leaks to back to keep the car idling.
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Old 03-23-2009, 05:45 PM
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It can be converted. Ask Hustler.... I saw it done on his car. It should not affect the tune too much.
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Old 03-23-2009, 05:58 PM
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Hustler is using an MSPNP which is MAP based. If the Xede uses the MAF to read airflow instead of a MAP sensor, you shouldn't vent the BOV to atmosphere.
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Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
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Old 03-23-2009, 07:17 PM
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Originally Posted by Savington View Post
Hustler is using an MSPNP which is MAP based. If the Xede uses the MAF to read airflow instead of a MAP sensor, you shouldn't vent the BOV to atmosphere.
I've never understood this, so apologies, but why?

When you in a 'venting' state you're not at WOT so who cares if the air vented isn't metered by the MAF?
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Old 03-23-2009, 07:25 PM
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still creates fuel spikes since it thinks all that air went into the engine and it didn't. It's probably not that bad, but if it's finely tuned, it could cause problems. It'll just be rich and possibly bog.
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Old 03-23-2009, 07:35 PM
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but you're not accelerating when you VTA, so what's to bog?
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Old 03-23-2009, 07:56 PM
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If you shift quick enough you can feel it bog, if it leaks at all at idle it will screw with your A/F ratio. If you rev the car at all it will go pig rich and want to die, unless you have a hard spring in it.
My car was VTA with a MAF for about 9 months.. loved/hated it. you have to tap the gas ever so slightly every time you let off the gas when slowing down to keep it from wanting to die/dying.
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Old 04-06-2009, 12:31 AM
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my new FIC will allow me to remove the MAF... Im not sure that I want to do this event if i Can. I might start with a cheap EBAY BOV and see what it does, if I dont like it Im sure that there is a turbo miata in the club that will want it.
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Old 04-06-2009, 12:31 AM
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Thanks for the info!!
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