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Old 09-09-2009, 04:15 PM   #1
Scooby Newbie
Member#: 221511
Join Date: Aug 2009
Default 2004 sti build questions

New to the subaru game. I know that i want to get a turbo upgrade on the car. Just dont know which. i was wondering would it be better to max out a 20g with 390 awhp or do a bigger turbo like gt30r or gt35r at lower boost to do 390awhp. which will make the engine last longer. stock block sti perfect compression. Also will be running methanol injection and ewg with the setup
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Old 09-09-2009, 04:29 PM   #2
Scooby Guru
Member#: 140163
Join Date: Feb 2007
Chapter/Region: MAIC
Location: 3MI Racing
03 STi


doesn't matter which turbo you go with, it's all in the tune. i suggest getting drop-in pistons as well.
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Old 09-09-2009, 04:31 PM   #3
the suicidal eggroll
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region: RMIC
Location: Broomfield, CO
2005 STi
2012 WRX


20g will be hard pressed to hit 390 whp, even with meth. 30r would hit it without too much effort, 35r you're just loosing spool if that's the power you're interested in. Start saving up for a new engine as well...
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