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Old 09-29-2012, 09:09 PM   #1
fred763
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Member#: 304443
Join Date: Dec 2011
Location: st cloud, MN
Vehicle:
2004 wrx STI
blue

Default turbo suggestion

its been a long time seens ive been on here or even seen my sti but im work season will be done here soon and ill be able to finish up the car and have a few more things to buy. the turbo is still my big debate. this is 100% a play toy car, not a DD car.
engine mods are:
mahle forged pistons
eagle rods
new sti treated crank
alc race bearing
ported heads (stock size vavles)
ported intake manifold
ported throttle body
large TMIC
3 inch intake and maf
1200cc injectors on E85
300lh fuel pump
stage 4 clutchmaster
el headers with 2 inch up pipe
3 inch downpipe hks with 3 inch magnaflow exhaust
tgv delete
i maybe missing stuff but thats most of it.

ok so im trying to build just a super fun are to drive (car has many chassis and suspension upgrades aswell). im looking to make somewhere in the 400-450 whp out of her with the best response possilbe. im setup for a stock location turbo so that limites it alittle but this is really what im looking at.
atp gtx 3071
atp gt 3076
blouch 1.5xtr
blouch 2.5xtr
something else?

really i want to stay ball bearing. let me know what you think.
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Old 09-29-2012, 09:51 PM   #2
RoadKillDMD
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Join Date: Jun 2011
Chapter/Region: RMIC
Location: Vanilla Valley, CO
Vehicle:
2011 STI
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What does your tuner say?
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Old 09-29-2012, 11:14 PM   #3
xluben
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Member#: 261612
Join Date: Oct 2010
Location: Minneapolis, MN
Vehicle:
2002 WRX Sedan
10.9s @ 128mph

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Blouch 1.5XTR seems like the best option of those. It will be big enough to max out your fuel system on E85, so going to one of the other (bigger) options you listed will just be increased lag and no more power (unless you redo your fuel). I have a very similar setup except with a Blouch 20G XTR (slightly smaller than the Dom1.5). It did 460+ WHP and 490+ WTQ on MAP's Dynojet with stock headers and stock catback. I have since added EL headers and single exit can exhaust so I'd expect it to do a little more. It would do 400-something on RS Motors Mustang dyno.
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Old 09-29-2012, 11:50 PM   #4
fred763
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Location: st cloud, MN
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2004 wrx STI
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Quote:
Originally Posted by RoadKillDMD View Post
What does your tuner say?
dont have a particular one at the moment. may do all the tuning myself and just rent dyno time.
Quote:
Originally Posted by xluben View Post
Blouch 1.5XTR seems like the best option of those. It will be big enough to max out your fuel system on E85, so going to one of the other (bigger) options you listed will just be increased lag and no more power (unless you redo your fuel). I have a very similar setup except with a Blouch 20G XTR (slightly smaller than the Dom1.5). It did 460+ WHP and 490+ WTQ on MAP's Dynojet with stock headers and stock catback. I have since added EL headers and single exit can exhaust so I'd expect it to do a little more. It would do 400-something on RS Motors Mustang dyno.
you made 460 whp on a ball bearing 20g, that suprises me. i didnt think i could even get that out of a dom 1.5. how much boost you running then to make that?
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Old 09-29-2012, 11:57 PM   #5
WhatTurboLag?
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Join Date: Apr 2010
Chapter/Region: MWSOC
Location: Morton Grove, Illinois
Vehicle:
2006 WRX TR
WRB

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Fp 71 hta
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Old 09-30-2012, 12:18 AM   #6
fred763
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Location: st cloud, MN
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Quote:
Originally Posted by WhatTurboLag? View Post
Fp 71 hta
wow much be fairly new, havent seen it before but just looked on their website and looks about what im looking for. i really like the anti surge housing on the 3 inch cover.
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Old 09-30-2012, 09:55 PM   #7
xluben
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Join Date: Oct 2010
Location: Minneapolis, MN
Vehicle:
2002 WRX Sedan
10.9s @ 128mph

Default

Quote:
Originally Posted by fred763 View Post
you made 460 whp on a ball bearing 20g, that suprises me. i didnt think i could even get that out of a dom 1.5. how much boost you running then to make that?
20G XTR, 1.5XTR, 2.5XTR, etc are all based on 30R cartridges with smaller wheels on them. My 20G XTR is running at 27psi peak and about 25psi at redline. A Dom 1.5XTR will perform very similarly, with a tad more top end.
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Old 09-30-2012, 10:29 PM   #8
04ScoobyWtf
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Look into the kinugawa turbos. They are are brad of kamak and there turbos are top notch
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