Greddy Type S BOV Problems
 

Well i finally got my 'used' Greddy Type S BOV.

Ist impressions are that it is huge. Well bigger than my HKS SSQV.

First snag I came across was connecting the thing to my IC pipes. So managed to get the appropriate.

Anyway second and BIG problem is I fitted it and tried to VTA on idle. It would not and all I could hear was what sounded like wastegate chater/turkey gobble.

As you can tell by the pics below both outlets from the bov are teed to one hose which is then connected to the nipple on the inlet manifold.

I also tried it with only one outlet conencted but still no joy.

I left the adjustment screw as it was when I rec'd it. From the pic you can see it is wound out quite a bit.

I took it for a drive and it would not VTA at all.

I am very dissapointed as I was soo looking forward to hearing it sound like the greddy type s bov clips on youtube.

Any ideas what if anthing I am doing wrong?:vash:

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connect the lower port pre-TB (so compressor outlet) and the top port POST TB, so the two ports on behind in on the intake manifold.

with my hks I just run one port from the throtte body!

What two ports are there on the throttle body and where the hell is the one on the compressor housing.

Pics would really help dude. URGENTLY:confused:

just use the top only then. leave the bottom open.


the purpose of the lower port is to help push open the valve faster, so you dump open fast and im my case, without boost....

https://www.miataturbo.net/braineack...uumlinebov.jpg

cheers bud.

Sorry about all the dumb questions.

How the hell did you get the greddy to fit where it does on your set-up? does it not rub against the top radiator hose? Mine does.

Also On my greddy compresser outlet I only have one outlet. This is compressor outlet to wastegate. How do I connect my bov to this?

Also why did I hear compresser surge? Do I need to tighten or loosen the bov?

If it helps the bov was on a Pulsar before my car.

mine's mounted low enough that it doesn't rub, I can stick my finger between it and the hose.

tee off the wastegate tee, pre MBC

loosen the valve all the way....then drive away, tighten untill you start to flutter, then back it off a bit so it doesnt flutter. In my experience, with both ports hooked post TB, you'll flutter down low (1-5psi)...you're probably just hearing flutter and not surge....surge and loud and skreechy. Flutter will sound like like wings flapping.

[QUOTE=Braineack;123285]

loosen the valve all the way....


[QUOTE]

....in or out!

When I was 'test' fitting it was half way.

I have screwed it all the way in and will have to wait till it gets light tomoz now to test.

Also I really aprreciate your help and reply.

Just want to clear up somthing.

The top tee on the Greddy BOV goes to the nipple on the throttle boddle.

The lower tee hose goes to the compressor housing.

Please confirm the above are correct please.

yeah, lines are correct.


IN means valve is tight....so won't blow off very easily, if it does, it will open and close rapidly and flutter. So adjust it all the way OUT to start, slowly adjusting it in untill you have a good balance of tightness and no-flutter.


then you'll sound all badass like me:
http://www.youtube.com/watch?v=IxSSi80Lv8s

00:35, 00:45, 00:58sec

nice one. much appreciated.

I wil do this tomoz now and hopefully will have a little vid to post up.

Cant hear the greddy bov 'shriek' in that vid. I want mine to be insanely loud (ricer!!) whats the best way to achieve this?

Two words. Whistle Tip.

http://www.dailymotion.com/video/x1r...tips-bubb-rubb

It's louder than you think....more of a whoosh....when it was recirculated it was a loud ass whistle....see my passes evo on track vid.

Tabs if you want insanely loud BOV noise,just get the Turbosmart supersonic,or you car remove the tri-blade fin in your old HKS valve to achieve the loud wooosh sound,instead of the high pitched squeel.

Spike,

I had the TS before I had an intercooler and it was too quiet for me. I have heard the megasonic on a friends car and dont like it.

I like the squeels and chirps you hear from BOV. Really hope I can ge this Greddy to work and sound correctly.

I am a bit concerned as it used one from ebay.

I have the supersonic and I love it! I'm not a fan of the ones that chirp.

anyways....Tabs have you taken the valve apart and cleaned it?

yes I took it apart and it is very clean inside already.

listen here same BOV: http://www.youtube.com/watch?v=6oP0A...elated&search=

If you hook both lines up correctly it will function fine. If you can pull the intake manifold an drill and tap it for a bit larger vacuum ports then all the better.

UPDATE!

Right got the Greddy BOV fitted this morning. All vacum Lines all correctly attached and it makes the tell tale greddy shriek.

However, as soon as the revs drop the idle drops and it stalls.

I have played with the adjustment screw winding it all the way out and then in. but no matter what so far when reved whether it be on idle or pulling up to stop when driving it stalls.

I have tightned up clamps and checked hoses. Sounds like a vacum leak to me or the BOV could be fucked.

Any suggestions would be greatly appreciated as this is turning into a headache.

I am tempted to put my HKS back on which gave me no problems and sell the greddy on ebay.

pics if it helps:

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whao lots of bling maybe your engine is unhappy with it not being chromed and refusing to run :rofl: My gues is it is a leak with your connection hose.

That would be the AFM's fault. when you lift off the throttle, the air the AFM measured nicely exits the intake but the ECU provides fuel for it anyway. Car goes extra-rich and drowns itself.

i'm sure someone else will chime in saying they run a type S and AFM :)

Yeah i forgot about that IF the AFM is still seeing the flow you need to recirc that shit for real. VTA+AFM is not the best combo

Damn...Not happy.

If i Recirc..it wont make that lovely sound...Right.

Forgot that Braineack dont use a AFM!:vash:

I have been doing some research on the net and it seems to be a common problem with Eclipse and Mazdaspeed Protege Guys.

I think it just takes some finer adjustment with the adjustment screw..

I took it out for a drive and got a real good video to doemonstrate the devine sound that BOV makes. The drive is not as smooth than it was with my HKS and I feel the car is runnign rich as it is popping.

Anyway the vid now!:bigtu:

My mate who has a RX7 took some footage earlier and now wants the same BOV. His car is the white rex parked on the right on the third pass in the clip.

Hope you like it cus I do. I keep annoying my girlfriend with the greddy bov sound.

http://www.youtube.com/watch?v=IPOEjAnQIlI

sounds good. I couldn't get my BOV to not leak at idle with my AFM, so I was recirculated. I ran a 3/4" brass check vavle on it for a while, but just decided to recirc. it.

you could try this....not sure it the RS and Type-S have the same threading, they should:
http://www.atpturbo.com/Merchant2/me...egory_Code=BCS

Very F&TF man i like it. i want mine to be alot basier though still great job.

Does sound good. Cant get enough of it.

I will look into the anti-stall module but the greddy type s is rare in the uk so dont know what hope I have of getting it

Whats a check valve and what does it look like? Where does it go?

Also how do i recirc it? If I recirc it will it sound the same?

Sorry about all the questions. I will get there in the end.

Unfortunately its causing the car to run crap. The air/fuel guage has gone crazee and I have VERY BAD gas mileage.

I dont want to remove it cus of the lovely soun it makes. However I have removed it for now and put back my HKS SSQV. Runs fine now. Now idle dip. No Staling. Nowt.

There is no use me recircing this bov. If I could find out what a check valve is and what it does ...that would be great?

The check valve goes on the BOV outlet. It keeps it from leaking at idle and at normal driving. That way all the air that is metered by the AFM gets to the motor so you don't run so rich. That ATP item looks nice, real clean install, it opens that rubber flap when under boost but stays closed under vac.

some valves do a better job of sealing closed at idle than other....the HKS is one of them, the Type-S is not.

while it's idling, you can see the valve....take a look in at it and see what it's doing.

try it without the bottom port connected and see how it reacts then.

tighten the valve upa bit and see as well.

you shoudl be able to get it to a spot where the valve is sealed at idle. I figured it was just easier to recirculate....and for me, it was just as loud.

My HKS is pretty much perfect. On the car now. No stalling problems or richness. But am BORED of the sound it makes.

Upon doing loads of research on the net. Its seems like the leaking at idle is a common problem with the greddy type s. People just end up recricing them or live with running rich and stalling.

I will try some testing later in the week by tightening it amd testing.

I already have an interested buyer in it too!

Also, I was thinking of taking out one of the springs. When I took it apart to clean it there were 2 springs inside. If I take one out would it not seal shut better on vacum?

I believe I removed the soft spring.

Ahh cheers. I will give this a go.

I will also take it apart tonite again and check the diaphram thorouhly for tears or hoels as resarch has shown this is a common cause of leakage at idle.

Also the greddy vendors in the UK sell these for like £60.oo. Now to me they would not be selling them is the membrrane splits and as the bov is used this is a possibility.

Found somthing on the net on the 'single spring mod'.

http://www.evomoto.com/tech_info.php?tPath=1&tech_id=7

May be of help to others with stalling problems.

I did exactly that (removed the center spring) with the cheap knockoff Greddy unit that I recently replaced by ailing FM BOV with. It causes the valve to be slightly open at idle, so I lathed a small adaptor to replace the whistle-horn that it came with and stuck a filter on it. Won't work for the AFM crowd, but in this condition the valve is very smooth and responsive, no flutter, no chirp, just a nice quiet *psssshhhhh* when I shift.