what is the loudest dump valve, i have a bailey piston one at the mo, but is not as loud as i want it.

anyone help?

ian

 

Blitz and HKS do the loud blow off valves, instead of the Pishhhhh
it's more like a cross between a growl and a steam train setting off
I've got a Blitz, and it's certainly un-nerves walkers and cyclists
when out at the weekend
Not cheap though, around £250+ for the unit


CRAFT

 

I'd reckon it's a Turbosmart Supersonic.

www.turbosmart.com.au

I know someone who has bought one and it's huge. The trumpet is 2.75" diam.!!!!

It was £172 including shipping from Aus!!

Not heard it for real yet, but you can download the sound it makes from the website.

cheers
Rich

 

thanks guys! will have a look around, been offered a blitz bov.

thanks again

ian

 

Craft,

Have you had any problems since fitting your dump valve? I've been thinking about having one fitted to my scooby (UK MY97) but been put off by the warnings about it affecting my fueling.

Alex

 

Simple answer really, no!
As soon as we got the car had it fitted so haven't really experienced it without, so can't really comment. What exactly do you mean, problems with fueling btw?

CRAFT

 

Sard have just released a new bov, and it looks pretty mean
Might look into getting one, if Heather lets me of course

http://www.takakaira.com/php/template.php3?id=702&cat=2
sorry, don't know how to do the link/url thingy

CRAFT

 

Hi Craft,

Is that the one that looks like R2D2?

Rich

 

Craft,

I've read a few posts on here from people saying that fitting the "wrong" type of dump valve i.e. the ones that vent to atmosphere, can upset the running (especially idling?) of scoobys that haven't had the fueling modified.
As I understand this (I'm not very technical, so bear with me!) the ecu cannot adjust the fuel/air mixture correctly to take into account the air being vented, so unburnt fuel is being passed through the engine and into the exhaust, resulting in pops, bangs and flames. I appreciate that this adversely affects the fuel consumption (but would look and sound very nice ) but what effect would this have on engine and/or turbo relaibilty (if at all?)

If any of the above is wrong, please feel free to put me right as I am a novice when it comes to this sort of thing!

Alex

 

At idle, the scoob runs around 800rpm, which seems to be ok, get around 250 out of a full tank, but no flames etc, yet
I'm pretty sure HKS do a recirculating bov if after one of these?
Not that technical myself, but I think it's horses for courses, just get what you feel happy with, I did, and 30 months down the line, no probs (yet?).

Rich, yep, thats the one, and I think it's called the R2 D2 as well

See ya sunday m8!

CRAFT

 

Cheers Craft, looks like I'll be getting one fitted soon.

 

I think the loudest one with the best sound (which is adjustable) is the Apexi...

 

I had an adjustable APEXI sequential BoV on my UK94 ~ didn't think it sounded as good as the HKS sequentiual BoV. But it was **LOUD** if thats what blows your trumpet