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I know tekdeus has the SP valve on his setup, mentioned in this thread and as below http://www.supraforums.com/forum/showthread.php?t=530737&page=13

Bruce, on other forums such as DSM and Evo forums, there is a large following for the FP GT35r billet turbos. They seem to consistently show faster spool and more power than a regular GT35r. Have a look at the comparison dynos on this page: http://store.forcedperformance.net/...oduct_Code=NTGT3582HTA&Category_Code=Turbo-FP

A fellow with a 1JZ hit 600hp with one: http://www.supramania.com/forums/showthread.php?t=80581

I just installed mine (the HTA3586 bigger model), with the SP valve. I'll post up some dynos soon!


 

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1994 Toyota Supra Turbo 6spd
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How much spool will be gained with this valve on a 67mm or a 71mm?
a 67 or 71 would be a perfect turbo on the road course with this set up!

i had a 67 (t04r) with a 0.84 dual port housing and i felt that was a great set up but was lacking ~500ish RPM spool... with this valve, hopefully it helps get at least 500 rpm spool up!
 

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Cool.....I'm just concerned because every wastegate actuator I have ever seen was bolted to the cold side.

If it is possible to re-clock the tang on the shaft, I would try to put it on the cold side.


You can mount the valve any way that you want. SO yes you can mount it with the actuator near the cold side if you want.... the question is will it clear the compressor housing on your setup!!
 
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