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Old 02-23-2013, 05:48 PM   #1
baisesti
Scooby Newbie
 
Member#: 348051
Join Date: Feb 2013
Default 2007 STi FP Green HTA Dyno

Just did a dyno tune for my 2007 STi. Result quite disappointing as only obtained peak torque at about 4800rpm. Was targeting peak torque at 4000rpm.

List of mods:
FP Green HTA
APS Top mount intercooler
DW 650cc injector
walbro fuel pump
HKS suction reloaded
Perrin Crank Pulley
Perrin 3" turbo inlet hose
3" downpipe
Apexi muffler
Ecutek RaceRom
boost 22psi on pump gas

Any idea how can I bring forward the torque band to around 4000rpm?

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Old 02-23-2013, 06:15 PM   #2
A-man07
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Member#: 271525
Join Date: Jan 2011
Location: BagEnd
Vehicle:
07 STi
424whp/382wtq GT3076

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2 things to question: the quality of the tune and the size of the injectors.
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Old 02-23-2013, 06:20 PM   #3
Slimsti
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Member#: 155696
Join Date: Aug 2007
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2007 BLK STI Dom3XTR
415/405 Precision Tuning

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U should have atleast 800cc injectors. Those 650 are way undersized for wanting 400. Besides that though the tune is off or u have a boost leak because you should be spoiling 22 prior to 4
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Old 02-23-2013, 10:18 PM   #4
project_skyline
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Member#: 153880
Join Date: Jul 2007
Chapter/Region: RMIC
Location: Western Slope, Colorado
Vehicle:
03 Evo VIII
2011 STI

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Ewww. What kinda dyno is that? Power looks like a honda.
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Old 02-23-2013, 10:24 PM   #5
Slimsti
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Member#: 155696
Join Date: Aug 2007
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2007 BLK STI Dom3XTR
415/405 Precision Tuning

Default

Quote:
Originally Posted by project_skyline View Post
Ewww. What kinda dyno is that? Power looks like a honda.
His vtec cross over is tuned correctly
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Old 02-23-2013, 11:16 PM   #6
bboylocob
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Member#: 151809
Join Date: Jun 2007
Chapter/Region: South East
Location: New Orleans
Vehicle:
2007 WRX
Black

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Who tuned it?

What were they thinking?

Bigger injectors asap and a better tuner
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Old 02-24-2013, 04:10 PM   #7
bjohnson_55
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Member#: 216580
Join Date: Jul 2009
Chapter/Region: MWSOC
Location: INDY
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loving that boost curve lol
definitely maxed out injectors at 22psi.
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Old 02-25-2013, 03:11 AM   #8
armyssoldierboy
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Member#: 109424
Join Date: Mar 2006
Chapter/Region: South East
Location: Deridder, LA
Vehicle:
06 AW STI
TS HTA 3076r 436hp/426tq

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My peak tq was 4800 with my 30r. I got cams and now I peak ~4100 and power goes to 6600rpm. Cams made a HUGE difference. I'm running Kelford 264/264's btw.
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Old 02-25-2013, 08:57 AM   #9
be0tch
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Member#: 66206
Join Date: Jul 2004
Chapter/Region: Tri-State
Location: Brooklyn, NY
Vehicle:
2005 WRX STi
FP HTA Green Turbo

Default

I feel that bigger injectors, electronic boost controller and external wastegate are all things that could improve this setup.
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