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Old 04-21-2014, 11:37 PM   #1
Masters84
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Does anyone have a 18g on a 2.0 4eat or know someone that has?
I am currently stage 2 right now my tranny had 70k and my engine has 15k (stock internals) 93 pump gas

I am wanting to know how the 18g preforms on the 2.0 4eat and what kind of power to expect wanting between 300whp-350whp and try and keep the torque around 300. This is my DD so I will get a safe mid grade tune.

Mod list as of today

2005 WRX 4eat Mods List
SPT high flow intake
STI hood splitter
Invidia catless downpipe
STI hood scoop
Invidia catless uppipe
STI TMIC
SRS catback exhuast
TurboXS BOV
Port n Polished exhuast manifolds
CNT high flow crosspipe
Mishimoto ancillary hoses
Mishimoto y pipe
EGT delete
NGK one step colder spark plugs
Mishimoto Y pipe
Perrin master cylinder support
Perrin end links

Parts i have to be installed
Zerolift TGV deletes
AMR turbo inlet 3inch
Stoptech brake lines F&R
Stock Modded 820cc injectors (blue)
Grimmspeed throttle body gasket
Perrin V1 fuel rails
Grimmspeed intake manifold gasket
Grimmspeed PnP intake manifold*
Grimmspeed PnP throttle body*
Mishimoto radiator hoses*
Walbro 255 fuel pump
Grimmspeed Ebcs
Fast motor sports tmic (black)
Cobb ap self map stage 2

This is what I'm am wanting to buy

(blouch td05 18g) and 50/50 methanol/water injection
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Last edited by Masters84; 04-28-2014 at 01:59 PM.
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Old 04-21-2014, 11:48 PM   #2
MassBugeye
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300-350WHP is possible but you would be pushing the limits of your stock EJ205. Most stock 4EAT EJ205s dyno at 150WHP. Your transmission is stronger than your motor so that shouldn't be an issue. As far as catless DP and up pipe, it should help you spool up much quicker on the 18G and of course you have the supporting larger injectors and fuel pump.

Get a tune ASAP for the existing mods though.
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Old 04-22-2014, 01:18 AM   #3
rexblake
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You want a larger turbo. A 40+ lb/min turbo would be the minimum, especially running pump gas and water/meth. So, basically,20g or larger (plus supporting mods) if you are serious about your whp goals.

Actually, I do believe Bouch's 18gxtr is close to 40lb/min, but I'd have to double check to be sure. Anyway, they list all the lb/min of their turbos, check them out.
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Old 04-22-2014, 01:33 AM   #4
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18g is sufficient, wouldn't go any bigger.
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Old 04-22-2014, 02:46 AM   #5
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Buy some good injectors and upgrade the trans.

My friend is running 20g ewg on a 4eat with high stall converter and it rips. He his full boost 22psi by 3400rpm in 3rd.


Whats a egt delete? The sensor on the uppipe?

And dont get worried about whp. Some dynos read high where a stage 2 2004 sti hit 350whp..... some read low where a gt30r on 24psi only hit 350whp.... dyno numbers are played out
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Old 04-22-2014, 05:27 AM   #6
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Egt delete? And why are you running colder plugs?

There have been 18g autos, go read proven power bragging.
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Old 04-22-2014, 07:18 AM   #7
Masters84
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Quote:
Originally Posted by Toys-N-Joys View Post
Buy some good injectors and upgrade the trans.

My friend is running 20g ewg on a 4eat with high stall converter and it rips. He his full boost 22psi by 3400rpm in 3rd.

Whats a egt delete? The sensor on the uppipe?

And dont get worried about whp. Some dynos read high where a stage 2 2004 sti hit 350whp..... some read low where a gt30r on 24psi only hit 350whp.... dyno numbers are played out
Yes it's the sensor on the uppipe I re located it to the downpipe
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Old 04-22-2014, 07:20 AM   #8
Masters84
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Quote:
Originally Posted by MassBugeye View Post
300-350WHP is possible but you would be pushing the limits of your stock EJ205. Most stock 4EAT EJ205s dyno at 150WHP. Your transmission is stronger than your motor so that shouldn't be an issue. As far as catless DP and up pipe, it should help you spool up much quicker on the 18G and of course you have the supporting larger injectors and fuel pump.

Get a tune ASAP for the existing mods though.
I'm running the Cobb self map for stage 2 right now. I will be tuned on the heartbreaking awd Mustang dyno after all my parts that I have are on I'm getting it all done at one time.
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Old 04-22-2014, 07:39 AM   #9
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Quote:
Originally Posted by Masters84 View Post
I'm running the Cobb self map for stage 2 right now. I will be tuned on the heartbreaking awd Mustang dyno after all my parts that I have are on I'm getting it all done at one time.
Then you definitely want a bigger turbo...
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Old 04-22-2014, 07:56 AM   #10
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Quote:
Originally Posted by Masters84 View Post
I'm running the Cobb self map for stage 2 right now. I will be tuned on the heartbreaking awd Mustang dyno after all my parts that I have are on I'm getting it all done at one time.
You MAY see 300whp if the turbo is maxed out with an EWG. Bigger turbo, a 20g may suit your power needs/wants better.
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Old 04-22-2014, 12:56 PM   #11
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I'm not sure if you've seen this but this guy made 312whp/277tq with a 2.0L and 18g-xt running 93 octane on a mustang dyno:
http://forums.nasioc.com/forums/show...ghlight=18g-xt

It was a 5spd though so I'm not sure what the difference would be for you.
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Old 04-22-2014, 01:24 PM   #12
Masters84
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My tuner just suggested to do a shift kit on my 4eat he said it would be worth it in the long run. Any input on this?
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Old 04-22-2014, 06:34 PM   #13
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Shift kit is basically the valve body modded. You will NOT be able to get 350WHP on a 4eat 2.0 with an 18G. Unless that dyno is dialing in crazy high numbers. Depending on what you want to accomplish with your car, you will have to do more research and mods. I would say at most realistically, with an 18g ewg setup, you'll be close to 270WHP and about 300lbs of torque on pump gas. If you tune for E85 you'll get a bit more.

Regardless of what you go with, it is a GREAT idea to go with a huge and good transmission cooler, modded valve body and a high stall torque converter.

Good Luck.
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Old 04-22-2014, 07:27 PM   #14
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A 18g xt is basically a 20g...

On e on a non auto car in theory I made close to if not 350whp based on traps and virtual dyno.

That was pushing the car of course...tried to kill the ej205 but it wouldn't die
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Old 04-22-2014, 10:31 PM   #15
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Quote:
Originally Posted by Shortpersonbk View Post
A 18g xt is basically a 20g...

On e on a non auto car in theory I made close to if not 350whp based on traps and virtual dyno.

That was pushing the car of course...tried to kill the ej205 but it wouldn't die
Yep. Just double checked, 18gxt and 18gxtr are both 43lb/min turbo. 20g are usually considered about 44 lb/min depending slightly on brand.
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Old 04-23-2014, 10:53 AM   #16
Masters84
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i forgot to put in the 38mm grimmspeed ewg kit i think i will be in the 300s for both whp and wtq or pretty close to it.
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Old 04-23-2014, 12:38 PM   #17
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You dont and wont need one step colder plugs
and dont bother with the modded 820cc injectors.
i always see people saying how they are a pain in the ass to tune and the spray pattern is horrendous.

just get a set of dw750's if you plan on staying 93 or id 1000's if you plan on going e85.

i have a 4eat also with a hybrid setup. before going to more power i highly suggest getting your valvebody getting modified. i got mine done at level 10 and the difference is amazing.
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Old 04-23-2014, 12:43 PM   #18
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I would highly recommend ID1000s versus DW750's if your gonna go that route. OP either way, you have to factor in drivetrain loss. You will not make anything close to what a manual will make with the same setup. The car will still be perform great, but just don't expect crazy awesome results. Either way, get your transmission ready for the new added power. IPT is also another awesome company to look into, if you have money go with Tony Rigoli!
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Old 04-23-2014, 12:45 PM   #19
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I'd do a 16g or vf48 ... And tune eventually
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Old 04-23-2014, 02:35 PM   #20
Masters84
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i am gonna do the valve body upgrade to have the quicker smoother shifts. I am very confident that i will see 300whp with my setup we will see i will post up dyno sheets when its all done in a couple of weeks

But i found this video BrenTuning 2002 Subaru Impreza WRX VF39 4eat 290whp/260wtq
https://www.youtube.com/watch?v=E1RNulrC-WA
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Old 04-23-2014, 02:43 PM   #21
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Quote:
Originally Posted by andrewkpt View Post
I'd do a 16g or vf48 ... And tune eventually
Dont take this persons advice
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Old 04-23-2014, 03:04 PM   #22
Masters84
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Originally Posted by SlverEJ20 View Post
Dont take this persons advice
i am sticking with the blouch td05 18g xt-r
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Old 04-23-2014, 03:15 PM   #23
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Quote:
Originally Posted by rexblake View Post
You want a larger turbo. A 40+ lb/min turbo would be the minimum, especially running pump gas and water/meth. So, basically,20g or larger (plus supporting mods) if you are serious about your whp goals.

Actually, I do believe Bouch's 18gxtr is close to 40lb/min, but I'd have to double check to be sure. Anyway, they list all the lb/min of their turbos, check them out.
its acutally a 43, but also you might want to look at steamspeed stx67 it based off the Garrett gtx 2867 which flows like 49lbs. that is my next turbo.
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Old 04-23-2014, 03:34 PM   #24
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This is a video of a Evo 3 16G PnP with pretty much the same mods as the op, tuned on crappy CA 91 and yes it is a 4eat.
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Old 04-23-2014, 03:44 PM   #25
Masters84
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Quote:
Originally Posted by Strider327 View Post
Light Launch with Subie WRX STI - YouTube

This is a video of a Evo 3 16G PnP with pretty much the same mods as the op, tuned on crappy CA 91 and yes it is a 4eat.
this is a STI mine is just a WRX 2.0
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