Just wondering what everyone with FI Rx-8's are running. I am looking to put a ifferent one on.

I kinda like the louder ones IMO. Like the Turboxs RFL or the Greddt Type RS....

Any other ideas?

The Tial 50mm is known to be one of the best.

+1 on the Tial, I've had it for about two years now and seems a perfect balance between performance and sound.

My neighbor had that RFL and it seems more for the ricers, although if you want sound...

I have the HKS SSQV and the Synchronic.

I've had the greddy type-s, turboxs rfl, and the synchronic (used it with filter, anti stall fitting, and in recirculating mode combination).

I don't care for greddy's bov's. the turboxs had a nice sound to it, but people online complain about having to oil it. The synchronic is really nice, but if you use the AP, you can't vent it.

The Tial 50mm is known to be one of the best.

Only problem is you can't recirculate it.

I am very happy with my Greddt Type RS. Not too loud but not quiet either.

I had the Greddy Type S, then switched to the HKS SSQV & liked it better.

Only problem is you can't recirculate it.

I am very happy with my Greddt Type RS. Not too loud but not quiet either.

They make a recurc fitting for the TiAL. It's expensive though.

The TiAL and HKS SSV are the best, but I don't care for the SSV "shudder" sound. It's still a solid BOV, though. Unless you're running massive boost, BOV's realyl come down to sound and reliability.

Only problem is you can't recirculate it.


You have to remember it's engineered that way, so it's like saying there's a problem with the GT4094R turbo, it doesn't have an internal wastegate...

I'm not sure he needs to recirculate, isn't he using the interceptor X?

They make a recurc fitting for the TiAL. It's expensive though..

Are you talking about their alpha bong series :D:
http://img89.imageshack.us/img89/5942/alphawhatfw9.jpg

Blow off valves must be recirculated when they are positioned behind the device which reads your airflow since your car has calculated that the air will be burned.

If your blow off valve is in front of your air sensor you can vent it till you turn blue in the face.

I've had the greddy type-s, turboxs rfl, and the synchronic (used it with filter, anti stall fitting, and in recirculating mode combination).

I don't care for greddy's bov's. the turboxs had a nice sound to it, but people online complain about having to oil it. The synchronic is really nice, but if you use the AP, you can't vent it.
How is it that MM doesn't have to recirculate his BOV?

How is it that MM doesn't have to recirculate his BOV?

Mysql meant you can vent when you using AP and synchronic together

^I thought he was using those together

yea, he is and its recirculated, not venting to atmosphere

I could've sworn MM said he wasn't recirculating...i'll look it up :)

http://www.rx8club.com/showthread.php?t=147041&page=3 post #69

I have a greddy type s with the rs spring and I also have a turbonetics raptor. I like both but the type s is louder than the raptor. And also the raptor sounds like a snake hissing, very quiet unless I blow off in boost.

I could've sworn MM said he wasn't recirculating...i'll look it up :)

Jeff isn't. I am. I don't know why people keep thinking we're the same person.



I have a greddy type s with the rs spring and I also have a turbonetics raptor. I like both but the type s is louder than the raptor. And also the raptor sounds like a snake hissing, very quiet unless I blow off in boost.


If your BOV is working well, it's not going to make a prolonged sound. That's one of the reasons why the synchronic works so well, the sound goes whoosh and doesn't squeal a half hour like the type-s does.

mysql:
not to thread jack but why does Jeff's work uncirculated and yours didn't care for it much? (other then the fact that Jeff is the evil mad scientist who can pretty much get anything to work...)

MazdaManiac is using the HKS it stays closed while in vacuum. Mysql is using the Syncronic and it stays open while in vacuum. This is why Mysql must recirculate his BOV and MazdaManiac doesn't have to even though they are both using the AccessPORT.

I have a thread about the synchronic if you search for it. It works the reverse of how a bov usually operates. That's one of the reasons why it works so well, but unless your fuel management is map based, you have to recirculate it.

mysql...I didn't think you and Jeff were the same person, I got confused on what BOV you where using. I thought Ray told me both you and Jeff were using the HKS

i am kinda lost guys...plz some1 to clear me up...does the hks sequential 2 bov has to be recirculated???????

i am kinda lost guys...plz some1 to clear me up...does the hks sequential 2 bov has to be recirculated???????



:banghead:

How about you point out the specific quote that made you think that, so we can explain it to you.

Its not the type of blow off vavle that you have which constitutes recirculation, it's the setup of your car. Read my post a few up. You don't want to starve your engine of that air.

some just don't understand blow-through applications, so most jump on the band wagon.

Are you talking about their alpha bong series :D:
http://img89.imageshack.us/img89/5942/alphawhatfw9.jpg

Haha, that's right, the Bong BOV!



You never have to recirculate your BOV, even if it's located after the MAF as in a draw-thru setup, all it does is create a momentary rich condition during decel which results in a small backfire (sometimes) and sometimes some flames, it doesn't hurt your motor.

You never have to recirculate your BOV, even if it's located after the MAF as in a draw-thru setup, all it does is create a momentary rich condition during decel which results in a small backfire (sometimes) and sometimes some flames, it doesn't hurt your motor.

From what I know, If your running a MAF based ecu then you should recirculate because the MAF already calculated the amount of air that passed by it and already calculated the amount of fuel to use with that air. When I had my emanage i had a bov and vented it to the atmosphere which did what you said and I hated it. But thats just me, some of you guys may like the gunshot backfires and the baby sparks lol.

ok then i am a noob...with mm/bhr kit and ap recirculation is needed or not???

If you use the accessport (maf system) recirculating is a good idea though it isn't required unless you run the synchronic bov (I tried it with the antistall fitting and it didnt work well)

That is as simple as I can put it.

From what I know, If your running a MAF based ecu then you should recirculate because the MAF already calculated the amount of air that passed by it and already calculated the amount of fuel to use with that air. When I had my emanage i had a bov and vented it to the atmosphere which did what you said and I hated it. But thats just me, some of you guys may like the gunshot backfires and the baby sparks lol.

All it does is create a momentary rich condition. The air was metered by the MAF, so the ECU figures the fuel needed for it's target Lambda. When the BOV vents, the air escapes, so not as much air is entering the motor as the MAF metered. That means the engine will run rich, just it's only for a second. Sometimes it will bog the motor slightly, but it usually just results in a backfire.

The point is you don't have to recirculate. Does it make the car run better? Sure. Do you have to do it? No.

My BOV was near silent when I recirculated it.

I don’t mind to hear a pop here and then on decel so I vent to atmosphere again. :)

^my car pops anyways on decel and its NA

I have the greddy rs recirculated and its still loud. I want the synchronic and will be swapping soon.

Haven't seen too many people with mine. I'm using a Go Fast Bits (GFB) hybrid recirc / blow off. It has 11 hybrid settings.

When I first put it on at full blow off, the car would run rich momentarily after venting, then hesitate, so I put it on 50/50. Car ran fine, but was eventually re-tuned to vent to atmosphere, so I don't recirc anymore unless I want the car quiet.

A more expensive version of my valve allows you do adjust the recirc/blowoff and thus the volume from inside the car.

There are also multiple trumpets you can get for sound, all woosh, woosh after normal throttle and whistle after WOT, and all whistle.

Sound is good but not as tight as the HKS IMO.

^Sounds a lot like the Dual Port BOV from TurboSmart.