Thread: 07 Wrx Vf48!!
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Old 05-21-2009, 02:56 PM   #18
arch4life
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Join Date: Feb 2008
Location: Ann Arbor, MI
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seems right on track for 17.5-18 psi. could he not push any more psi? was that why he was crushing the bpv?

as far as identical to vf39, it is, except the wastegate is sprung a bit stiffer, thats why people say it holds better to redline.

you can do the same thing with a vf39 with a wastegate helper spring, or even a vf30, 34, 43, etc. (mebbe the 43 is sprung heavier too) top end flow is exactly in line between my vf30 and my vf39, same flow. verified via logs.
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