('03-'05) 4EAT drivetrain losses

Thebikeninja · 01-28-2013, 11:32 AM

So, I'm getting my car built:

- EJ 25 Block is getting built, forged parts
- Tomei 7960 turbo
- Tomei equal length headers
- Tomei up pipe
- Cobb intake
- Koyo radiator
- Cobb catless down pipe, STi cat back

That's pretty much the long and the short of it. At least from the performance standpoint! A previous tune with a VF34 turbo, Cobb downpipe and STi cat back saw 240 whp and 280 wtq on 91.

So, I'm hoping this time around to get 350 whp on 94 instead of 91. Any guesses what I should see? I hear some pretty wildly varying guesses for drivetrain losses on the 4EAT!

Philistine · 01-29-2013, 05:40 AM

stock tranny?

350awhp/tq will be pushing it

Thebikeninja · 01-29-2013, 06:35 AM

Yeah, it will be. But I'm not launching or anything. Most of the fun will be had at speed. Until my tranny gets built this summer. My main question was whether my goal is attainable with the parts I have going in!

Thebikeninja · 01-29-2013, 06:43 AM

Flow rate on the turbo is about 50 lbs/min as well.

guroove · 01-29-2013, 06:56 AM

I have a 43 lbs/min turbo, and I have a very conservative 17psi tune, and I'm getting 305 - 310 whp. My tuner thinks on a 19-20 psi tune, I could put down 320whp, so 350 whp should be attainable with a 50 lbs/min turbo.

Thebikeninja · 01-29-2013, 08:07 AM

Awesome, I know I'll be satisfied regardless. Got some BC racing coilovers with swift springs, white line sways, STi seats and a few other things going in as well to go with my STi bumper. Updates to follow!

Thebikeninja · 01-29-2013, 09:58 AM

What fuel are you running?

guroove · 01-29-2013, 10:22 AM

93 Octane

voodoolord · 01-29-2013, 08:51 PM

How much did that turbo run you?

Thebikeninja · 01-29-2013, 11:01 PM

I got it for 1300.00 new!

93 eh? Awesome.

01-28-2013, 11:32 AM	#1 (permalink)
Thebikeninja Forum Member Join Date: Dec 2010 Posts: 88 Location: Edmonton Car Year: 2004 Car Model: Forester Transmission: 4EAT Gallery: 0 Feedback Score: 0 reviews	4EAT drivetrain losses So, I'm getting my car built: - EJ 25 Block is getting built, forged parts - Tomei 7960 turbo - Tomei equal length headers - Tomei up pipe - Cobb intake - Koyo radiator - Cobb catless down pipe, STi cat back That's pretty much the long and the short of it. At least from the performance standpoint! A previous tune with a VF34 turbo, Cobb downpipe and STi cat back saw 240 whp and 280 wtq on 91. So, I'm hoping this time around to get 350 whp on 94 instead of 91. Any guesses what I should see? I hear some pretty wildly varying guesses for drivetrain losses on the 4EAT!

01-29-2013, 05:40 AM	#2 (permalink)
Philistine Contributing Member Join Date: Jan 2006 Posts: 386 Location: Boise, IdaHO Car Year: 2009 Car Model: Fozzie XT Ltd Transmission: 4EAT Gallery: 0 Feedback Score: 1 reviews	stock tranny? 350awhp/tq will be pushing it __________________ 2009 FXT LTD - OBP, Stg 2 2011 Ferd Ranger 4x4 2013 FXT Touring 99 EZGO TXT Freedom

01-29-2013, 06:35 AM	#3 (permalink)
Thebikeninja Forum Member Thread Starter Join Date: Dec 2010 Posts: 88 Location: Edmonton Car Year: 2004 Car Model: Forester Transmission: 4EAT Gallery: 0 Feedback Score: 0 reviews	4EAT drivetrain losses Yeah, it will be. But I'm not launching or anything. Most of the fun will be had at speed. Until my tranny gets built this summer. My main question was whether my goal is attainable with the parts I have going in!

01-29-2013, 06:43 AM	#4 (permalink)
Thebikeninja Forum Member Thread Starter Join Date: Dec 2010 Posts: 88 Location: Edmonton Car Year: 2004 Car Model: Forester Transmission: 4EAT Gallery: 0 Feedback Score: 0 reviews	4EAT drivetrain losses Flow rate on the turbo is about 50 lbs/min as well.

01-29-2013, 06:56 AM	#5 (permalink)
guroove Forum Member Join Date: Jun 2007 Posts: 4,335 Location: Staten Island, NY Car Year: 2005 Car Model: Forester XT Gallery: 0 Feedback Score: 12 reviews	I have a 43 lbs/min turbo, and I have a very conservative 17psi tune, and I'm getting 305 - 310 whp. My tuner thinks on a 19-20 psi tune, I could put down 320whp, so 350 whp should be attainable with a 50 lbs/min turbo. __________________ 2005 Obsidian Black Pearl XT w/4eat

01-29-2013, 08:07 AM	#6 (permalink)
Thebikeninja Forum Member Thread Starter Join Date: Dec 2010 Posts: 88 Location: Edmonton Car Year: 2004 Car Model: Forester Transmission: 4EAT Gallery: 0 Feedback Score: 0 reviews	4EAT drivetrain losses Awesome, I know I'll be satisfied regardless. Got some BC racing coilovers with swift springs, white line sways, STi seats and a few other things going in as well to go with my STi bumper. Updates to follow!

01-29-2013, 09:58 AM	#7 (permalink)
Thebikeninja Forum Member Thread Starter Join Date: Dec 2010 Posts: 88 Location: Edmonton Car Year: 2004 Car Model: Forester Transmission: 4EAT Gallery: 0 Feedback Score: 0 reviews	4EAT drivetrain losses What fuel are you running?

01-29-2013, 10:22 AM	#8 (permalink)
guroove Forum Member Join Date: Jun 2007 Posts: 4,335 Location: Staten Island, NY Car Year: 2005 Car Model: Forester XT Gallery: 0 Feedback Score: 12 reviews	93 Octane __________________ 2005 Obsidian Black Pearl XT w/4eat

01-29-2013, 08:51 PM	#9 (permalink)
voodoolord Forum Member Join Date: Dec 2011 Posts: 409 Location: Southern Oregon Car Year: 08 Car Model: FXT Sports Transmission: 5 speed Gallery: 0 Feedback Score: 0 reviews	How much did that turbo run you? __________________ I carry a gun because a cop is too heavy

01-29-2013, 11:01 PM	#10 (permalink)
Thebikeninja Forum Member Thread Starter Join Date: Dec 2010 Posts: 88 Location: Edmonton Car Year: 2004 Car Model: Forester Transmission: 4EAT Gallery: 0 Feedback Score: 0 reviews	4EAT drivetrain losses I got it for 1300.00 new! 93 eh? Awesome.

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