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Old 08-21-2019, 11:41 PM   #1
Vokeen
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Member#: 504993
Join Date: Aug 2019
Chapter/Region: RMIC
Vehicle:
2002 WRX Wagon
Silver

Default Question about capabilities of EJ205

I bought a 2002 WRX Wagon, with a couple of bells and whistles on it. Got a great deal but need to know the engines mechanical limits.

It has upgraded parts, such as a slightly bigger turbo and TMIC. As well as the Cobb Accessport, with professionally done tunes.

I'm just curious as to the ej205s capabilities for boost. The tunes are as follows: 14psi, 16psi, and 17psi. If I were to guess, the tunes and mods were done ~50k mi ago. I'm wondering how safe they would still be under regular maintenance and fairly normal driving. (The car currently sits at 86k mi) I want to know if I should get entire new tunes done at a local reputable shop.

I'm not sure what other information you require, but here is the parts list for the current build. Please let me know if i'm being an idiot and leaving something out. Thank you so much for all the help!

(Stock suspension and body)
TD05 16g turbo
Cobb turbo heat shield
Perrin inlet tube
Grimmspeed TMIC
Grimmspeed 3 port boost controller
Grimmspeed up pipe with turbosmart 44mm wastegate
ID1000 1000cc injectors
DW200 fuel pump
3 inch turbo back exhaust (With at least Stromung dual tip muffler)
Koyorad Aluminum radiator
Cobb access port

Bonus pic!

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Old 08-22-2019, 02:06 AM   #2
D-Rodman
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Member#: 110078
Join Date: Mar 2006
Chapter/Region: Tri-State
Location: Long Island N.Y.
Vehicle:
05 Saabaru JDM STi
Black Ver 7 VF48 6sp RA

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Beautiful car, keep an eye on the oil level, be proactive on preventive maintenance, log it every couple of months to make sure everything is working properly, make sure the timing belt and related components have been replaced with good quality parts, enjoy!
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Old 08-24-2019, 03:46 PM   #3
PVNRT
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Member#: 483821
Join Date: Mar 2018
Vehicle:
2004 WRX 2.0 18g

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I have been making 350 whp on stock internals (same engine as you) for over a year now with a slightly larger turbo than yours.

As long as you have enough fuel, correct ignition timing and remove heat where ever you can, this engine seems happy enough to make 400 crank hp without any issues.

Depending on where you live it would be best to sell the AP, change over to opensource tuning and get a pro tune on a dyno for your specific setup. Make sure to have all your mods done before you get tuned, and do your homework on the tuner.

Don't do full boost runs back to back, don't use much boost in 5th gear, only use boost over 3k RPM, and check oil levels every time you get gas and it should live a long time. You will spin a rod bearing long before you crack a ringland or bend a rod with these ej engines.

Of course do a compression test before you do any of this to make sure you are starting with a healthy engine.

The tune is everything!
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Old 08-24-2019, 03:53 PM   #4
PVNRT
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Member#: 483821
Join Date: Mar 2018
Vehicle:
2004 WRX 2.0 18g

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Forgot to say....I am at 207K miles, OEM top mount intercooler and 91 pump gas.

If you don't already have them, get a boost gauge, wideband and an EGT gauge if you're feelin frisky.
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Old 08-25-2019, 02:59 AM   #5
sederholma
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Member#: 480049
Join Date: Jan 2018
Chapter/Region: MAIC
Location: Pittsburgh, PA
Vehicle:
2005 Subaru Impreza
Gray

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I have a jdm ej205, stock engine, avcs, vf48, bigger TMIC, and opensource tuned to 300 on 93 and 344whp on e85. It's been running like that for 5 years now with no problems. I track it, drag it, everything. It hit 90k on the motor and the head gasket finally blew (I had it at 20 pounds of boost) so while I had the motor out I got built internals and hesdstuds.
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Old 08-25-2019, 11:24 PM   #6
subaru_gc8
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Member#: 29292
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
Vehicle:
2004 WRX wagon
silver

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get rid of the accessport and get the jdm ecu. as far as limits, the 205 arent that much different than the 207. might be a little more strength but its hard to quanitfy. a 16g isnt really much as far as turbos go so you should be fine. our cars are ,pretty much more ocatane limited so yeah, dont go too crazy and make sure that the knock stays under control and you should fine
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Old 08-26-2019, 07:25 AM   #7
D-Rodman
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Member#: 110078
Join Date: Mar 2006
Chapter/Region: Tri-State
Location: Long Island N.Y.
Vehicle:
05 Saabaru JDM STi
Black Ver 7 VF48 6sp RA

Default Question about capabilities of EJ205

Why would you tell the op to get rid of his ecu and install a jdm ecu ?
Curious.
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Old 08-26-2019, 07:43 AM   #8
bdubblu
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Member#: 251046
Join Date: Jul 2010
Chapter/Region: MAIC
Location: Mostly at my home
Vehicle:
2004 WRX Wagon
Stage 5.1.2a.2

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Quote:
Originally Posted by D-Rodman View Post
Why would you tell the op to get rid of his ecu and install a jdm ecu ?
Curious.


Agree. Why do that?
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Old 08-26-2019, 07:54 AM   #9
bdubblu
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Member#: 251046
Join Date: Jul 2010
Chapter/Region: MAIC
Location: Mostly at my home
Vehicle:
2004 WRX Wagon
Stage 5.1.2a.2

Default Question about capabilities of EJ205

OP... ITS ALREADY SET UP PERFECTLY! You donít need to change a thing. First of all, the mods are modest and so are the tunes. Thatís says so much in the world of these cars and typical owners. The previous owner was probably interested in a fun car without running it on the ragged edge. The 18g is really the limit for a drivable turbo on the 205. The 16g is probably the better of the two in terms of daily driving and response.

The 5speed isnít the strongest transmission, but youíre well within what it can handle.

I donít know WHAT these people above are even thinking telling you to change anything. ???

Literally the ONLY thing you should do is get a full tank of gas, and send a couple logs to the local tuner. Make sure that the tunes are right for your gas and your altitude. THATS IT.

Otherwise drive it like it is. Get to know it. Have a blast. AND ONLY THEN... make any changes based on how YOU feel the car should be changed.
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Old 08-26-2019, 06:19 PM   #10
runner19
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Member#: 39562
Join Date: Jul 2003
Chapter/Region: MAIC
Vehicle:
My02 WRX Sedan 5MT
WR blue

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I have MY 2002 WRX sedan. I have had it since 2002.

1. check oil regularly.
2. I would recommend a tuner do a few logging runs to determine if all is well.
3. Feed it good gas.
4. Mine has TD05-20g on it. it had a VF34 and lots of mods.

I would recommend you keep an eye on the crankpulley. It has been known to fail on these cars, esp if you park it out side.
Radiator caps fail on these older cars.

The engine mods are a well put together package.

I highly recommend suspension mods and brake/tire/rim mods. They will make the engine more usable on the road. Imho, i found them more fun in a daily.

The engine mods can go wrong. The OEM sub assembly is very strong. I added 80 more kw to the unopened engine. It ran for 7 years and 45 0000 miles with out any issues.

Last edited by runner19; 08-26-2019 at 06:25 PM.
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