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Old 02-10-2013, 12:40 PM   #14
Scooby Newbie
Member#: 161812
Join Date: Oct 2007
Chapter/Region: NWIC
Location: Salem, Oregon
06 Wrx STi


I'm sure a 3" inlet wouldn't hurt. It seems on some turbos it makes a big difference in spool. There is a thread of here from the guy that ran Deadbolt Turbos. He did some testing on the 2.4 vs 3" inlet on an Sti and concluded the gains in spool they saw had more to do with having to do tgv deletes to get the compressor cover to fit than having a 3" cover. I don't have empirical evidence but I bet it would make a difference on 60 lb/ min turbos in a rotated setup.
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