10-26-2011, 11:56 AM
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#11 (permalink)
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A True Z Fanatic
Join Date: Aug 2009
Location: San Diego
Posts: 1,235
Drives: 15 GT-R / 11 Prius
Rep Power: 27
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Quote:
Originally Posted by car8oy281
opposite. 2.5 inch to 3 inch. pressure drop and loss of velocity is minimal. might make a difference in spool by 100 to 150 rpm but nothing crazy. car makes full boost right around 4200 to 4300. gate is being pushed open prematurely due to wastegate location. i would rather it hold boost solid then spike then come back down.
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What's the rough area of the opening of a T4 flange? Assuming a 3" ID pipe has 7.06 square inches of opening.
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Car Sold! Pleasure being a part of the Z community. 
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)
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