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Old 12-03-2010, 04:30 AM   #1
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Default Remember the "twin scroll helper valve"?

If I remember correctly a while ago we were discussing these:


And as far as I know no one knew of any testing results with/without.

For those that don't remember, this little guy goes between a non twin scroll mani and twin scroll turbo.

Someone tested it:



Thought that was pretty damn nice gains for a cheap valve adapter thingie.
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Old 12-03-2010, 04:33 AM   #2
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moar
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Old 12-03-2010, 10:40 AM   #3
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I've done some reading into it lately but for my T70 that's going on my auto SC300. They def work and would be great for say a 35r on our cars
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Old 12-03-2010, 11:34 AM   #4
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Only thing I would be worried about is how secure that plate is. Looks pretty damn interesting though.

Additionally, I would LOOOOVE to see someone implement it with an EBC hooked to it so you can more accurately control when it opens and closes. My bet is that those dynos are with it just hooked up to the manifold/turbo, so its opening gradually. If you hold it shut longer I wonder if it could increase faster.
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Old 12-03-2010, 12:09 PM   #5
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Quote:
Originally Posted by 18psi View Post
If I remember correctly a while ago we were discussing these:


And as far as I know no one knew of any testing results with/without.

For those that don't remember, this little guy goes between a non twin scroll mani and twin scroll turbo.

Someone tested it:



Thought that was pretty damn nice gains for a cheap valve adapter thingie.
Impressive, but I wouldn't call a $500 product *cheap*. Although if you had the cash, it seems like a worthwhile investment.
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Old 12-03-2010, 12:16 PM   #6
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Holy ****, it costs $500? You could make one yourself for less then $200 pretty easily.
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Old 12-03-2010, 12:16 PM   #7
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They are 500?
For some reason I think I saw them for around 100 somewhere? Or maybe it was a knockoff that I saw of this for under 100?
Didn't know they were that 'spensive
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Old 12-03-2010, 12:36 PM   #8
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Quote:
Originally Posted by 18psi View Post
They are 500?
They're (allegedly) on sale for $500, from $650.

Plus $90 for the $40 solenoid to operate it. (So, to answer neogenesis2004, it already uses EBC, albeit most likely on VICS-style on/off mode.)

http://www.spracingonline.com/store/...ool_Valve/3659

Hell of a neat idea, though.
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Old 12-03-2010, 12:40 PM   #9
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Yeah, I was the one who brought that up...but I wouldn't recommend it because according to the Greek's Sound Performance dyno creates fake dyno numbers


On another note, I am debating switching turbos to the GTX35R w/Twin scroll so I can use this, because they're not going to make a twin scroll housing for my turbo, ever, unless I go way bigger. Seems like it helps a whole bunch with mid-range power.
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Old 12-03-2010, 12:54 PM   #10
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$500 for a 500 RPM drop in spool sounds a bit excessive. Those 50-75hp nitrous shots that the supra guys are using for improved spool up look like a little better deal at around half the cost. And the newer ECUs are set up to control them.
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Old 12-03-2010, 01:08 PM   #11
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You don't have to refill a valve
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Old 12-03-2010, 01:49 PM   #12
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Quote:
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You don't have to refill a valve
This.

I would rather have the valve. I would suspect that this would work great on a twin scroll Holset too. Hmm.....
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Old 12-03-2010, 02:33 PM   #13
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But for only 500 rpm? I was expecting much better than that when I first saw the product advertised.
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Old 12-03-2010, 02:35 PM   #14
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The componets to get that unit to work right are bit harder to make function properly than people think. A buddy of mine built something very similar and had HELL trying to get everything to seal right. If this one seals, and the shaft doesn't bind up... etc.... could see it as being worth it.
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Old 12-03-2010, 03:39 PM   #15
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Quote:
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But for only 500 rpm? I was expecting much better than that when I first saw the product advertised.
ONLY 500?

You say that like its nearly insignificant.
Both charts show 50+ whp increase in the midrange.


500 bux to move a 40r powerband 500rpm to the left is a damn decent improvement for the money.


I"m not saying this thing is the best thing since sliced bread, but c'mon now.
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Old 12-03-2010, 03:43 PM   #16
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I was optimistically expecting more than 500 when I first saw the design.
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Old 12-03-2010, 04:22 PM   #17
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It could be sold for ALOT cheaper but the majority of the markey is the supra crowd so they don't really care what they spend
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