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Old 10-09-2012, 10:25 PM   #1
tigburns
Scooby Newbie
 
Member#: 305043
Join Date: Dec 2011
Default Dyno Tune: 2.5L + Blouch 20G XT-R makes 358whp

Event: dyno pull
Location: Mach V Motorsports for dyno pull Sterling, VA
Ambient Temp: 80.96 degrees Fahrenheit
Elevation: 300ft
Weather: cloudy, 29.64 in-HG, 27% Relative Humidity, SAE 1.0
Tires: Dunlop SP Sport 600 245/40R18

Car: 2012 STI
Tuner: Dan, Mach V
http://forums.nasioc.com/forums/member.php?u=12029
http://fastwrx.com/
Dyno Info: Dynojet Research
Transmission: 6spd stock gearset
Gear: 4th
Peak HP at RPM: 358.29 @ 6500rpm
Peak Torque at RPM: 360.77 @ 3750
Baseline hp/tq for a stock on same dyno: 243.86hp @ 6300, 245.21tq @ 3000
Target Boost: Max boost 21 psi, tapers to 20 psi.
Target AFR: AFRs are in the mid-11's. Around 11.1-11.2 at redline
Fuel: 93 octane

Engine/Power Modifications:
AEM Cold Air Intake for 08+ WRX/STi
Cobb Downpipe, fiberglass wrapped
Cobb Accessport, Mach V custom tune
SPT Catback 3" exhaust from factory
Invidia WRX/Sti Header, large tube, fiberglass wrapped
ETS top mount intercooler
Denso Iridium spark plugs, 1 range colder
Fuku Works turbo inlet pipe
Mach V 3-Port Boost Control Solenoid
Blouch 20G-XTR Turbo Upgrade Ceramic Coated
Deatschwerks Top-Feed Injectors 750cc
Grimmspeed Ported and Polished TGV Bypass, ceramic coated
Grimmspeed PNP Throttle Body, ceramic coated
Grimmspeed PNP intake manifold, ceramic coated
Grimmspeed 3mm phenolic spacers

Driveline Modifications:

Suspension Modifications:
Cartboy pitch stopper
cartboy short shifter and shift bearings
STI Type N Engine Mounts

Other Modifications:

Attachments:
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Last edited by tigburns; 10-10-2012 at 10:08 AM.
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Old 10-10-2012, 07:14 AM   #2
thisisntjared
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Member#: 177891
Join Date: Apr 2008
Chapter/Region: Tri-State
Location: south jersey
Vehicle:
06 wrx wagon
child seat/tow hitch cgm

Default

sweet numbers, but i think you got the rpms mixed up...
Quote:
Originally Posted by tigburns View Post
Peak HP at RPM: 358.29 @ 3750rpm
Peak Torque at RPM: 360.77 @ 6500
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Old 10-10-2012, 08:20 AM   #3
spintheground
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Member#: 239638
Join Date: Feb 2010
Chapter/Region: MAIC
Location: VA Beach
Vehicle:
2007 WRX TR UGM
02 MR2 EGM

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^Yeah I'd say so.


Did you ask for a "high number" tune? Because that graph looks like it. Haven't seen a lot of 20g-XTR graphs so maybe I'm wrong.. but I'd assume you could get a flatter torque curve.
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Old 10-10-2012, 09:29 AM   #4
tigburns
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Default

Quote:
Originally Posted by thisisntjared View Post
sweet numbers, but i think you got the rpms mixed up...
fixed, thanks
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Old 10-10-2012, 09:36 AM   #5
Steve.804
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Member#: 68647
Join Date: Aug 2004
Chapter/Region: MAIC
Location: Richmond, VA
Vehicle:
07 STI
Rotated 35R Jorge Tuned

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Congrats OP! And great job Dan!! 11 sec street car making peak torque under 4k.

Quote:
Originally Posted by spintheground View Post
^Yeah I'd say so.


Did you ask for a "high number" tune? Because that graph looks like it. Haven't seen a lot of 20g-XTR graphs so maybe I'm wrong.. but I'd assume you could get a flatter torque curve.
^it's rare you see an uncorrected chart posted in PPB. For reference I made about 285whp on Dan's dynojet when I was stage 2 (can't remember the correction factor but probably the same) and trapped 108mph in the 1/4.

I think the torque drop is an illusion due to the RPM's on the chart being so close together. Horsepower doesn't start to drop until 6500rpm which tells me the torque is fairly flat. Perhaps the high peak torque is due to an initial boost spike?
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Old 10-10-2012, 09:48 AM   #6
spintheground
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Join Date: Feb 2010
Chapter/Region: MAIC
Location: VA Beach
Vehicle:
2007 WRX TR UGM
02 MR2 EGM

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I wasn't refering to the correction factor or the number's being 'high'. Just that the graph shows high peak numbers vs a tune with less peak power but more usable power.

Maybe it's just how the turbo performs, I don't know.

I'd like to see the boost plot.
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Old 10-10-2012, 10:27 AM   #7
tigburns
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Default

Quote:
Originally Posted by Steve.804 View Post
Congrats OP! And great job Dan!! 11 sec street car making peak torque under 4k.
Thanks! Keeping the peak tq low was a goal, along with maintaining good throttle response. This is my DD, so wanted to keep it drive-able with a fairly wide power band. Dan & Matt @ Mach V were very helpful in guiding me along and making final "adjustments".
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Old 10-10-2012, 10:48 AM   #8
MrTbrew8
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Default

Sounding good
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Old 11-07-2012, 12:34 PM   #9
mrjcotten
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Member#: 241953
Join Date: Mar 2010
Chapter/Region: MAIC
Location: CVILLE, VA
Vehicle:
02 hybrid/6speed
01 2.5 RS sedan

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Nice setup man. i just got tuned with a 20gxt by dan and also had almost identical numbers as you.
i bet its fun.!
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Old 11-08-2012, 01:18 PM   #10
MMY MSL
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Member#: 335135
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Chapter/Region: NWIC
Location: PDX
Vehicle:
2004 WRX
Silver

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Congrats on the power, nice chunk over stock! What inlet size and hotside does that XTR have?
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Old 11-08-2012, 01:40 PM   #11
Badler
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Location: Orange
Default

Quote:
Originally Posted by spintheground View Post
I wasn't refering to the correction factor or the number's being 'high'. Just that the graph shows high peak numbers vs a tune with less peak power but more usable power.

Maybe it's just how the turbo performs, I don't know.

I'd like to see the boost plot.
I think it's throwing you off because it's not stretched like most of them.

Nice setup OP. Looks like stock spool until 3500rpm and then it just takes off! Great street setup IMO. This thing would wail on e85.
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Old 11-11-2012, 05:13 PM   #12
tigburns
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Member#: 305043
Join Date: Dec 2011
Default

Quote:
Originally Posted by MMY MSL
Congrats on the power, nice chunk over stock! What inlet size and hotside does that XTR have?
8cm inlet, not sure about hot side. Whatever it is off the shelf, I didn't make any changes.
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Old 11-11-2012, 10:44 PM   #13
xluben
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Location: Minneapolis, MN
Vehicle:
2002 WRX Sedan
10.9s @ 126mph

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Quote:
Originally Posted by spintheground View Post
I wasn't refering to the correction factor or the number's being 'high'. Just that the graph shows high peak numbers vs a tune with less peak power but more usable power.

Maybe it's just how the turbo performs, I don't know.

I'd like to see the boost plot.
Most people would rather have a faster car than purposely give up power in search of a flatter torque curve.

Quote:
Originally Posted by Badler View Post
I think it's throwing you off because it's not stretched like most of them.

Nice setup OP. Looks like stock spool until 3500rpm and then it just takes off! Great street setup IMO. This thing would wail on e85.
I run this turbo on E85 and it's a lot of fun!

Quote:
Originally Posted by tigburns View Post
8cm inlet, not sure about hot side. Whatever it is off the shelf, I didn't make any changes.
8cm is the hot side. The inlet is either stock (2.4") or 3". I think turbo is usually a 2.4" inlet.
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Old 11-12-2012, 11:48 PM   #14
roger280zx
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Location: GA
Default

I'm no subbie guy, but sense when does peak tq at 3750 equate to a "high numbers tune"? Tq curve looks pretty grunty to me. I'm sure it drives like a beast of a DD.
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