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Old 04-30-2013, 03:23 PM   #15
medamullet
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Member#: 99442
Join Date: Oct 2005
Chapter/Region: International
Location: Man of Mystery
Vehicle:
2006 SGM STI
I'm on CORN YO!

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Quote:
Originally Posted by Maxwell Power View Post
I picked up 40whp and spooled 250rpm faster when running 21psi on a GT35R from the factory header with Grimmspeed Crosspipe to this header. Most of my customers see similar results. That would tell me, no, it isn't hurting spool and yes, it is improving flow.
My experience is the same. The only time smaller runners help is for smaller turbos. There is a point when the runners become the choking hazard of the motor.
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