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THE OFFICIAL 350wtq+ 5EAT thread


ClimberDHexMods

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My goal is for this thread to contain summary case studies on the small handful of 05-09 5EAT LGT/OBXT cars, in order to see what does work and what does not work. This way people planning on going >350wtq will have some centralized data to help them draw their own conclusions.

 

Why 350wtq+? Because <350 has been shown to work just fine. There is not, however, compelling data on the 350+ guys.

 

Hopefully the following members and many others will list their setups and detail any transmission issues or failures, as well as successes. I'll try to keep the first few posts current. My setup will eventually take me past 350 as well, in which case I will post my results.

 

FRKevin

Goyim

mikeyan

iamboon

etc

 

Member statements:

 

--------------------------------------------------------------------------------------------------------

 

Rick:

 

Ok, I'll play.

 

2006 LGT

FP68HTA on E85

IPT VB

Tranny Cooler

The car has 68k on it.

The IPT VB was at 55k miles.

Results: I destroyed the center diff with a 3200rpm launch, and my IPT fully built tranny should be here tomorrow.

Technically the transmission was fine, but Subaru would not sell me the parts to repair the center diff.

 

--------------------------------------------------------------------------------------------------------

 

iamboon:

 

fp red

meth

pro tuned

tgv deletes

fmic

conservative tune 418 whp

 

current state: rebuliding the motor with the help of ShockerGt, Rallispec, KSTech and Scott Siegel

 

--------------------------------------------------------------------------------------------------------

 

FRKevin:

 

Soon we can start fresh on mine with a lot more specs lol.

 

When I went stage 2 i did the VB mod and trans cooler to begin with at 65k miles.. at 75k miles switched to an FP green and supporting mods.. then at 85k miles i did the red and more supporting mods.. currently sitting at 99k

 

Had no issues until a recent trans flush.. there was a mishap and trans fluid was put into my front diff.. so i drove home with very low fluid in the trans.. brought it back and it was corrected and worked fine.. about a week later i accelerated hard to get into traffic.. everything was fine. i noticed a problem trying to slow down.. the trans would not downshift out of 4th into 3rd.. it was stuck only in 4th/5th. drove it home having to start out in 4th gear.. right before i pulled into my driveway the trans clunked and shifted down into 1st like it should. drove the car around and it seemed fine.. but shortly after that 4th/5th starting to go rapidly. now they are gone .. if it goes into 4th/5th the sport mode will start flashing and you can no longer shift manually.. but it will hold the gears from 1-3 and sometimes hit 4th downhill

 

setup in the works..

 

fully built IPT 5EAT

 

Block

 

LA Iron Sleeves

Bored 100mm

100mm Wisco pistons

Pauter Rods

Knife balanced crank

Pinned mains

BC 280 cams

BC titanium springs/retainers

Port and Polish

GReddy Header

UR Up + Tial 44mm wastegate

GT4088r (debating on which a/r i want to change this to since its in the closet)

 

plus all other supporting mods

 

also tossing the idea of doing 2000/2200cc injectors and E85 for some crazy numbers

 

--------------------------------------------------------------------------------------------------------

 

Here is what I have from memory(It may no be correct):

 

Goyim

year??? LGT

AVO380, EWG, meth injection

350whp

Past Results: Blew prior transmission when VDC activated in a turn.

Status: Vehicle parted out (Mustang GT now).

 

 

Pierce88

2005 LGT

HTA Green, EWG

400+whp??? tbd

No transmission modifications

Results: Pending

 

 

Mikeyan

Blouch Dominator 3.0 w/ meth, CA 91 crap gas

390whp now??? http://www.legacygt.com/forums/showthread.php?t=61070&highlight=aquamist+install

IPT Valve Body modification???

Status: Unknown, no failures or issues posted.

 

 

iamboon

400whp

IPT Built Transmission

Status: Unknown

[CENTER][B][I] Front Limited Slip Racing Differentials for the 5EAT now available for $1895 shipped, please inquire for details! [/I][/B][/CENTER]
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you have to remember that a dyno can give you any number.

For example, on my stage 2 setup, I hit 254whp and 388wtq on a Dyno Dynamics dyno with my 5EAT. My torque curve was crazy looking due to how the dyno loads the 5EAT.

Result a couple of years later: new tranny

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you have to remember that a dyno can give you any number.

For example, on my stage 2 setup, I hit 254whp and 388wtq on a Dyno Dynamics dyno with my 5EAT. My torque curve was crazy looking due to how the dyno loads the 5EAT.

Result a couple of years later: new tranny

 

thank you for your report, and sorry for your loss (trans). as for the numbers being inflated, that's why I list power mods too. people can throw out any numbers they want, but I only report what's realistic, as you can see above, the 3 cases stated are realistic. There is a debate about the high AT early tq numbers being realistic on specific dynos, but that doesn't apply here too much because even the early-boosting HTA68 clears most of the stall rpm window. You are right, a stage 2 setup can beat the piss out of a 5eat, especially without upgraded the shifting, but that's not what this thread is about (since it's already been covered, and I've written about it at length).

 

For the record. I'm not reporting anything smaller than a AVO380/20g/FP68HTA, and even all of these requiring some meth/E85/ewg element(s) to make 350. The ONLY reason I put wtq instead of whp is so I don't have to listen to people telling me that whp doesn't matter, wtq does. You proved that idea to be a catch-22.

 

Everyone please submit more data!

[CENTER][B][I] Front Limited Slip Racing Differentials for the 5EAT now available for $1895 shipped, please inquire for details! [/I][/B][/CENTER]
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OpenSource Infamous1 Tube

Weisco Pistons

Forged Rods

Cometic Headgasket

ARP Studs

Port and Polished Heads with Gasket match

Forced Performance HTA Green with 2.4" Inlet and Welded for EWG(Freshly Rebuilt)

K&N Typhoon Intake

Perrin 2 Piece Catted Downpipe(Front and Rear Sections)

XO2 Mid+Y-pipes with Stock Mufflers

WBR Front Mount Intercooler

Coated Grimmspeed Up-pipe with 44mm EWG Flange

Coated UR Dump Tube

Tial 44mm EWG

TGV Deletes

Perrin 816cc Injectors

Gimmick Motor Sports Inlet

Innovate LC1 with Red Gauge

Walbro 255

Tein S-Tech Springs(I know they are garbage but I got them for $50)

Racing Brake Rotors

Stainless Steel Brake Lines

Hawk HPS Pads

 

Tranny Mods: None so far

 

Condition: Motor getting built and we shall find out when its done...

 

-Pierce

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Ok, I'll play.

 

2006 LGT

FP68HTA on E85

IPT VB

Tranny Cooler

The car has 68k on it.

The IPT VB was at 55k miles.

Results: I destroyed the center diff with a 3200rpm launch, and my IPT fully built tranny should be here tomorrow.

Technically the transmission was fine, but Subaru would not sell me the parts to repair the center diff.

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OpenSource Infamous1 Tube

Weisco Pistons

Forged Rods

Cometic Headgasket

ARP Studs

Port and Polished Heads with Gasket match

Forced Performance HTA Green with 2.4" Inlet and Welded for EWG(Freshly Rebuilt)

K&N Typhoon Intake

Perrin 2 Piece Catted Downpipe(Front and Rear Sections)

XO2 Mid+Y-pipes with Stock Mufflers

WBR Front Mount Intercooler

Coated Grimmspeed Up-pipe with 44mm EWG Flange

Coated UR Dump Tube

Tial 44mm EWG

TGV Deletes

Perrin 816cc Injectors

Gimmick Motor Sports Inlet

Innovate LC1 with Red Gauge

Walbro 255

Tein S-Tech Springs(I know they are garbage but I got them for $50)

Racing Brake Rotors

Stainless Steel Brake Lines

Hawk HPS Pads

 

Tranny Mods: None so far

 

Condition: Motor getting built and we shall find out when its done...

 

-Pierce

 

Pierce would you mind telling me how many miles have you put on the car with your current setup?

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uuuhhhh, I think that would be 'zero' miles, as he stated that it is currently being built.

 

Pierce would you mind telling me how many miles have you put on the car with your current setup?

 

I put about 15 miles on it before it blew... Was doing logs for Infamous1 who is tuning my car when the boost reference line to my fuel pressure regulator popped off... Caused the car to run lean... fried 2 pistons and all the ringlands...

 

-Pierce

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^^^^^ It pops off more easily than most of my lines after being on-off-on-off. I am of the school that every hose must be clamped. I'm $5 deep in clamps. I don't remember which came unclamped anymore.
[CENTER][B][I] Front Limited Slip Racing Differentials for the 5EAT now available for $1895 shipped, please inquire for details! [/I][/B][/CENTER]
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No one has got the torque converter from IPT? I will be putting one on Dec 7. I already have the valvebody and tranny cooler.

 

My new IPT tranny I'm in the process of installing included the 4krpm stall torque convertor. I'll let you know in a few days how it drives.

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My new IPT tranny I'm in the process of installing included the 4krpm stall torque convertor. I'll let you know in a few days how it drives.

 

Holy dang that is a lot of stall... Since your turbo is making power way the heck before 4000k, you are going to be able to WOT straight into power all the time, anywhere... :)

 

Also, I want to know how it cruises on the highway at 50mph... how far/much it slips and whether you lose and mpg doing so... please.

[CENTER][B][I] Front Limited Slip Racing Differentials for the 5EAT now available for $1895 shipped, please inquire for details! [/I][/B][/CENTER]
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Ummm.. i dunno if I qualify but 2005 5eat w/cooler,

VF 39 @20psi @ 3200 rpm

Catless Header back

FMIC

DW 740cc Walbro FP

Infamous tune

 

I don't know how much I put down but if feels good and tranny is holding up fine.

 

Great setup, glad to see you rockin' it, but the numbers just aren't there with a VF39. You would be a great example for the early torque crowd, but not in this analysis.

[CENTER][B][I] Front Limited Slip Racing Differentials for the 5EAT now available for $1895 shipped, please inquire for details! [/I][/B][/CENTER]
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Holy dang that is a lot of stall... Since your turbo is making power way the heck before 4000k, you are going to be able to WOT straight into power all the time, anywhere... :)

 

Also, I want to know how it cruises on the highway at 50mph... how far/much it slips and whether you lose and mpg doing so... please.

 

 

At first I was concerned with having such a high stall, but Ty at IPT talked me into it. I was told that it should feel the same when driving normal and just allow me to launch at a higher rpm. I hope that's how it works.

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