Welcome to the North American Subaru Impreza Owners Club Monday October 26, 2020
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC General > Proven Power Bragging

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 03-28-2014, 03:18 PM   #1
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default 570whp, 93oct 50/50 Meth, 30psi, HTA86, IAG built, 105k daily driven,IMPOSSIBRU??????



My previous thread (http://forums.nasioc.com/forums/show....php?t=2594791) and now I only added the Cosworth Intake Manifold!

Performance shops can always put out big powered builds however they later turn out to be only mercurial and volatile setups that flicker and die away. What speaks resoundingly to a shop's expertise is churning out crazy builds that last and with a warranty that they stand by. IAG FTW!

IAG V-band rotated turbo kit
- Cosworth Intake Manifold
- HTA86 0.82 Tial V-band housing
- IAG FMIC kit with Spearco core and front bumper beam
- IAG 4" Intake
- IAG V-band Uppipe
- IAG V-band Catless Downpipe
- Tial 44mm External Wastegate with open dump
- GT Spec Equal Length Headers V-band with Uppipe
- Harman Motive Catback Exhaust
- Aquamist HFS-6 running Boost Juice (50% methanol/50% water)
- Injector Dynamics 2000cc injectors
- Aeromotive 340lph Fuel Pump
- Aeromotive Fuel Pressure Regulator
- IAG Fuel Rails
- IAG TGV Deletes
- Cosworth Phenolic Spacers
- Grimmspeed Electronic Boost Control Solenoid
- Grimmspeed Thermostat
- Mishimoto Radiator
- Tial Q BOV
- LFR7AIX Spark Plugs
- IAG Catchcan
- Stock Air Pump deleted
- IAT sensor and 4 Bar MAP sensor
- Cobb Accessport Speed Density protuned by Jorge

IAG Stage 2 Bottom End
- Manley Platinum Series 99.5mm Piston Set
- Manley H-Beam Rods
- ACL Main and Rod Bearings
- OEM Nitrided Crank, OEM headgasket
- Killer B Oil Pickup with Baffle
- Gates Racing Timing Belt Kit
- 12,000mile/1year warranty

IAG Stage V Heads
- ARP2000 Head Studs
- Manley Extreme Duty 33mm Exhaust Valve Set
- Manley Race Flow 37mm Intake Valve Set
- Manley Valve Spring and Retainer Kit
- IAG Stage V headwork with Multi Angle Valve Job/Port&Polish
- Kelford Dual AVCS 272/268 11.30/10.50mm Lift Street Cams

Stock STi baseline = 225whp
http://i.imgur.com/7GoG8ox.png

__________________________________________________ _________
Long term follow up 1/2015:

40,000 miles daily driven with this setup. Motor got hit with the fuel pump failure but the Manley components took it like a champ and recovered apparently

http://i.imgur.com/Wd4rNcx.png

Had the car strapped to the dyno as an annual cardiac stress test in November 2014:
http://i.imgur.com/4QcrVPB.jpg
Still pumpin' out great numbers

__________________________________________________ __________________________________________________
4/4/2015 - 45,000 miles
still pulls okay
:D

60k wear
* Registered users of the site do not see these ads.

Last edited by user1029; 02-25-2016 at 07:09 PM.
user1029 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 03-28-2014, 03:32 PM   #2
bmxhotsauce
Scooby Specialist
 
Member#: 127099
Join Date: Sep 2006
Chapter/Region: BAIC
Vehicle:
02 IMPERZA WRX
BLACK

Default

nice build
bmxhotsauce is offline   Reply With Quote
Old 03-28-2014, 04:18 PM   #3
toph
Scooby Specialist
 
Member#: 78640
Join Date: Jan 2005
Chapter/Region: NESIC
Vehicle:
19 Tundra
04 STi

Default

Nice man. IAG is a great shop. I'm at 440whp daily driving, it's a great feeling lol. Most people in the 400whp+ range aren't driving these cars every day.
toph is offline   Reply With Quote
Old 03-28-2014, 04:34 PM   #4
brandonswrx
Scooby Newbie
 
Member#: 186194
Join Date: Aug 2008
Chapter/Region: Tri-State
Location: Abbottstown, Pa
Vehicle:
04 PSM STI
:Agile Tuned 391hp/387tq:

Default

Nice build man!! I bet its a blast driving that everyday.
brandonswrx is offline   Reply With Quote
Old 03-28-2014, 04:50 PM   #5
08sedanwrx
Scooby Newbie
 
Member#: 247611
Join Date: May 2010
Chapter/Region: MAIC
Location: MD
Vehicle:
2011 Built Motor STI
SSM--410whp 475tq-MS109

Default

Sick car- I think i saw that last weekend when I had mine tuned!
08sedanwrx is offline   Reply With Quote
Old 03-28-2014, 05:17 PM   #6
Paul
Scooby Guru
 
Member#: 56203
Join Date: Feb 2004
Chapter/Region: Tri-State
Location: south nj
Vehicle:
00 RSTI Coupe
Twin Scroll 2.5XTR EJ207

Default

do you have a overlay of this tune and your last one perferably both at the same boost pressure?
Paul is offline   Reply With Quote
Old 03-28-2014, 05:20 PM   #7
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default

Quote:
Originally Posted by Paul View Post
do you have a overlay of this tune and your last one perferably both at the same boost pressure?
Not the ideal comparison

user1029 is offline   Reply With Quote
Old 03-28-2014, 05:21 PM   #8
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default

Thanks for the comments guys
user1029 is offline   Reply With Quote
Old 03-28-2014, 06:15 PM   #9
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default

Quote:
Originally Posted by user1029 View Post
Not the ideal comparison

This is the interesting graph on straight 93 octane, boost is the same but varied greatly on ambient temperatures.



Impressions:

1. Even at 25psi, the Cosworth IM is still not able to "wake up". There are huge losses of power down low and shifting of the curve to the right.

2. I wouldn't say I lost power with the Cosworth IM because you have to account for the temperatures differences in the tunes but certainly the benefits of the Cosworth IM on low boost are marginal at best.

3. The OEM STi manifold is fantastic and I would recommend keeping it if you are not building a drag/road racer.
user1029 is offline   Reply With Quote
Old 03-28-2014, 06:16 PM   #10
Bariga
Scooby Specialist
 
Member#: 179846
Join Date: May 2008
Chapter/Region: NWIC
Location: Renton, WA
Vehicle:
07 STi Limited
EFR 8374 TS EWG

Default

stage 5 heads, coool
Bariga is offline   Reply With Quote
Old 03-29-2014, 01:10 AM   #11
Paul
Scooby Guru
 
Member#: 56203
Join Date: Feb 2004
Chapter/Region: Tri-State
Location: south nj
Vehicle:
00 RSTI Coupe
Twin Scroll 2.5XTR EJ207

Default

thats exactly what I was looking for....surprised you lose that much down low. I guess you can you feel that on the street? If it picked up around 5-5.5k it wouldn't be so bad since thats where the shifts land...
Paul is offline   Reply With Quote
Old 03-29-2014, 01:31 AM   #12
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default

Quote:
Originally Posted by Paul View Post
thats exactly what I was looking for....surprised you lose that much down low. I guess you can you feel that on the street? If it picked up around 5-5.5k it wouldn't be so bad since thats where the shifts land...
Yup it takes awhile to fill up those huge runners at tip-in with low/mid rpms. I feel the lag if I just floor it at 4000rpms. However, I downshift or brake boost or left foot brake around turns to minimize the lag
user1029 is offline   Reply With Quote
Old 03-29-2014, 02:59 PM   #13
Scuby04STi
Scooby Specialist
 
Member#: 328635
Join Date: Aug 2012
Chapter/Region: NWIC
Location: Portland*
Vehicle:
2004 STi GTX3076R
Rally Blue

Default

Sure really ties the bay together well with that Cosworth in there.

Seeing the comparison for just the intake manifold is GREAT, I got the Cosworth IM as well on my car this makes me want to pull it off and see the difference. I don't need to spool sooner because my power band it as long as I need it to be to never shift out of it but this gets me curious to how soon my turbo would have picked up if I would have tested my OEM IM on it first.

Do you know what specifically was the reason that the power doesn't hold on this build to the upper rpm? I just keep looking over everything you did and nothing stands out as a clear choking point.
Scuby04STi is offline   Reply With Quote
Old 03-29-2014, 03:22 PM   #14
Mr.Chino
Scooby Newbie
 
Member#: 345840
Join Date: Feb 2013
Vehicle:
2006 STi

Default

Awesome build and good looking car! Too many built motors blowing up during break in or during the first tune.
Mr.Chino is offline   Reply With Quote
Old 03-29-2014, 03:26 PM   #15
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default

Quote:
Originally Posted by Scuby04STi View Post
Sure really ties the bay together well with that Cosworth in there.

Seeing the comparison for just the intake manifold is GREAT, I got the Cosworth IM as well on my car this makes me want to pull it off and see the difference. I don't need to spool sooner because my power band it as long as I need it to be to never shift out of it but this gets me curious to how soon my turbo would have picked up if I would have tested my OEM IM on it first.

Do you know what specifically was the reason that the power doesn't hold on this build to the upper rpm? I just keep looking over everything you did and nothing stands out as a clear choking point.
conservative tune up top for longevity

thanks guys
user1029 is offline   Reply With Quote
Old 03-29-2014, 06:54 PM   #16
Scuby04STi
Scooby Specialist
 
Member#: 328635
Join Date: Aug 2012
Chapter/Region: NWIC
Location: Portland*
Vehicle:
2004 STi GTX3076R
Rally Blue

Default

Quote:
Originally Posted by user1029 View Post
conservative tune up top for longevity

thanks guys
Thought so, smart to do on a DD. Hope she continues holding up well.
Scuby04STi is offline   Reply With Quote
Old 03-30-2014, 08:13 AM   #17
spoolinsti05
Scooby Guru
 
Member#: 108051
Join Date: Feb 2006
Chapter/Region: Tri-State
Location: NY
Vehicle:
2005 TickingTimeBomb
Jr tuned TT Sleeved

Default

I'd pull timing to if I was out if fuel flow
spoolinsti05 is offline   Reply With Quote
Old 03-30-2014, 05:24 PM   #18
manitou
Scooby Specialist
 
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
Vehicle:
2006 XTI Limited
OBP, Junior tuned 573WHP

Default

Something does not seem right here. That Cossie manifold should not hurt your spool like your graphs show and you should be making quite a bit more power at that boost even with moderate timing. You must have a or some boost leaks, somewhere! I would look it over vary carefully, pressurize the system start spraying some soapy water and find those leaks. You should be well over 600 on a Dynojet with that 75 lb. turbo! I'm making more power with less boost on PnL's Dynojet with a much smaller turbo.

My take on this is not a Cosworth manifold problem. I have buds with them on builds with similar power and I felt the response after the Cossie manis was overall improved, maybe not far left but everywhere else.
manitou is offline   Reply With Quote
Old 03-30-2014, 05:45 PM   #19
Paul
Scooby Guru
 
Member#: 56203
Join Date: Feb 2004
Chapter/Region: Tri-State
Location: south nj
Vehicle:
00 RSTI Coupe
Twin Scroll 2.5XTR EJ207

Default

Why don't you think it would hurt spool??

there was another thread with a review (wanna say it was perrin) but with the cossy mani on a 30r setup it lost some down low and only picked up about 5hp past 6k
Paul is offline   Reply With Quote
Old 03-30-2014, 06:44 PM   #20
manitou
Scooby Specialist
 
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
Vehicle:
2006 XTI Limited
OBP, Junior tuned 573WHP

Default

Friends of mine running them with positive results and the thread you're referring to Jeff/ sponagle's did not show it much later but showed midrange and upper end gains.
manitou is offline   Reply With Quote
Old 03-30-2014, 07:06 PM   #21
Paul
Scooby Guru
 
Member#: 56203
Join Date: Feb 2004
Chapter/Region: Tri-State
Location: south nj
Vehicle:
00 RSTI Coupe
Twin Scroll 2.5XTR EJ207

Default

I disagree with your comment about Jeffs thread


Quote:
Originally Posted by Cobb Tuning View Post
[size=3]
First the lower boost:



The dotted line represents the Cosworth manifold, while the solid line. Spoolup was a bit slower, but I would not read anything into that. The temperature of the exhaust manifold makes a huge difference in spool up, and it wasn’t possible to have the exact same exhaust temps each time. (although I tried).

However, midrange torque is lower with the new manifold. As you can see from the boost trace, boost was also a bit lower with the Cosworth manifold. I did several runs, and I suspect the upper limit of the wastegate duty was not enough to reach the same boost level with the newer manifold. As the car approached redline the power output was almost equal even with a bit more then 1psi less boost in the Cosworth setup. Based on this, it would seem power is to be gained only at higher boost and power levels, and perhaps at higher RPM levels as well.

Second the higher boost:





At the higher boost levels I had enough duty cycle to get to the target boost in both tests. Spool up differences are hard to measure, but it did seem like the Cosworth spoolup was a tad slower. Above 6500 RPM power was higher with the Cosworth manifold, and this gain was sustained across multiple runs. Peak HP with the stock manifold was 413whp, and with the Cosworth manifold it was 426, a gain of 13whp.
I was off about the 5hp tho
Paul is offline   Reply With Quote
Old 03-30-2014, 07:22 PM   #22
manitou
Scooby Specialist
 
Member#: 193757
Join Date: Nov 2008
Chapter/Region: MWSOC
Location: Cedar, MI HP Techs MPS-SSLR2.5
Vehicle:
2006 XTI Limited
OBP, Junior tuned 573WHP

Default

Quote:
Originally Posted by Paul View Post
I disagree with your comment about Jeffs thread I was off about the 5hp tho
That's still quite close especially with spool. Jeff's car has less boost with the Cossie as well

Bottom line is this build should be making way more power at 30psi and way sooner! This car had more boost with the Cosworth.

Last edited by manitou; 03-30-2014 at 07:31 PM.
manitou is offline   Reply With Quote
Old 03-30-2014, 10:36 PM   #23
spoolinsti05
Scooby Guru
 
Member#: 108051
Join Date: Feb 2006
Chapter/Region: Tri-State
Location: NY
Vehicle:
2005 TickingTimeBomb
Jr tuned TT Sleeved

Default

Not every car is the same get a grip.
spoolinsti05 is offline   Reply With Quote
Old 03-31-2014, 12:10 AM   #24
ckyguy68
Scooby Specialist
 
Member#: 316296
Join Date: Apr 2012
Location: Metro Detroit
Vehicle:
2006 STIROID
[email protected] on 29psi

Default

Very Clean engine bay! Hot side IC piping routed under the car?
ckyguy68 is offline   Reply With Quote
Old 03-31-2014, 02:18 PM   #25
user1029
Scooby Specialist
 
Member#: 57064
Join Date: Mar 2004
Vehicle:
2008 STi IAG built
HTA86 E85 Kel272s Cos IM

Default

^^Yup, thanks
user1029 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 09:09 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2020 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.