Is the S4 or S5 UIM better for a Ported Motor
#1
Is the S4 or S5 UIM better for a Ported Motor
I have been looking at doing an S5 UIM swap recently, but the last few posts I read (thread is from 2001) said that the S4 UIM is better on a ported motor.
On my next motor I plan to do a medium to large streetport so I am wondering if anyone has more information then, "I heard the S4 UIM is better for a ported motor"
Thanks
On my next motor I plan to do a medium to large streetport so I am wondering if anyone has more information then, "I heard the S4 UIM is better for a ported motor"
Thanks
#2
No rotary, no problems?
Join Date: Nov 2004
Location: Dubuque, IA
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I've never heard of this. As far as I've known, the S5 upper intake manifold flows better. I know this is for sure true for the N/A, but I'm not sure about the turbo. Apparently the S4 lower intake manifold flows better than the S5 one though.
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