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Old 05-07-2015, 03:47 AM   #1
Payu STI
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Default My quest for a 400whp Budget setup

I recently purchased a 2008 Impreza STI wagon
Here its the list of parts so far:
Cobb sf intake converted to CAI with a 90deg aluminum elbow!!
Ebay turbo intake silicone hose
Ebay TDO6D 20g Turbo
Tsudu catless Downpipe
Ebay catless non resonated SS midpipe to stock muffler
Ebay 2.25in up pipe setup to ewg with a 44mm Tial wg
Custom SS 2in Crosspipe
I got a 2008 Outback long runner intake manifold!! nice piece BTW
DW 65 fuel pump
Ebay drop in Bosh 1000cc injectors
Ebay no name front mount Intercooler kit 2.5in piping with a 28in x 9.5 x 3.5 core intercooler
I purchased a tactrix cable and downloaded all the necessary Rom Raider definitions and ecuflash stuff
I was able to tune the wagon with the KS airpump removal kit and at the begining with the KS tgiv delete kit and ported the tgiv no codes!!
Then I installed the Cobb SF with the table I found in Romraider forums
and the Bosch 1000cc injectors and and my AFR its runnin to a 11.5 target according to OL table so far so good
I had to modify the timing table by removing a bunch of timing all over the place since I could feel when drivinf the ecu was removing timin even on stock configuration.
I baselined the wagon on a AWD Dynojet I have very close and made 2 passes one with everything pretty much cold made 261awhp and the other with heat soaked TMIC made 251awhp with an 11.5 target afr on everything stock in the wagon @ 14psi on the VF39 on stock map
93oct E10 fuel was used
My setup will be able to reach at least close to 400whp on 93oct fuel???
Any advices are welcome I jus want to have a fun 400whp AWD wagon!!
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Old 05-07-2015, 08:13 AM   #2
blurple203
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probably going to need a larger MAF, an equal length header and a good protune wouldn't hurt either
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Old 05-07-2015, 08:44 AM   #3
Payu STI
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I will be doing my tuning I have been tuning Nissan stock ECU for the las 8 years I have tuned multiple Nissan platform but mostly SR20 DE,DET, VE and VE-T From 145whp to 550whp on turbo setups all on pump gas also my last build was a 2.1l ALL MOTOR SR20VE ad I built the motor and made 248whp on 93oct and 272whp on M5 I know that Subaru's are different but tuning procedures are pretty much the same on all 4 stroke motors!! I have been doing my research here!! we will see in a couple of weeks if they are doable or not
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Old 05-07-2015, 08:48 AM   #4
Payu STI
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Quote:
Originally Posted by blurple203 View Post
probably going to need a larger MAF, an equal length header and a good protune wouldn't hurt either
Cobb maf should be enough for 400awhp based on the maf scaling table they use!! I have considered an eqlh but at this point I want to see if I can reach my goal with the parts I have already!!
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Old 05-07-2015, 08:59 AM   #5
Uncle Scotty
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elh....yeah...just do it


and when ya blow it all sky high...then ya know ya got it right


and your tuning experience on other platforms is out the window with subarus....subarus blow up when ya try what works for other makes

you WILL blow it sky high.....that is a 1000% fact
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Old 05-07-2015, 09:11 AM   #6
passenger.in.his.STI
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Quote:
Originally Posted by Uncle Scotty View Post
elh....yeah...just do it





and when ya blow it all sky high...then ya know ya got it right





and your tuning experience on other platforms is out the window with subarus....subarus blow up when ya try what works for other makes



you WILL blow it sky high.....that is a 1000% fact

The asshat that just tuned our 15 STI can vouch for that. Getting compression testing done next weekend to see if we're going to be rebuilding with a forged motor.
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Old 05-07-2015, 11:40 AM   #7
Miggs1337
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I'm interested to see what happens. This should be good
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Old 05-07-2015, 11:46 AM   #8
Payu STI
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Quote:
Originally Posted by Uncle Scotty View Post
elh....yeah...just do it


and when ya blow it all sky high...then ya know ya got it right


and your tuning experience on other platforms is out the window with subarus....subarus blow up when ya try what works for other makes

you WILL blow it sky high.....that is a 1000% fact
Such an ignorant comment!! Have you tuned a car at all??
I have enough confidence in my knowledge to show you a thing or two about tuning!!!
I will prove myself when I do it!!
I made some research before started tuning my car and When I saw the timing table on a stock 2008 STI I instantly figure it out why they brake ring lands even STOCK!!!!
I could feel even 100% stock the ecu pulling timing to aid the knock from the stock timing map and that was the first problem I solved an My logs @ 19psi on the VF39 came up with minimal to none knock learned and solid 11.5-.6 AFR steady on the 4th gear pulls so I am good!!!

BTW my motor still in one piece!!!
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Old 05-07-2015, 11:50 AM   #9
Rexcision
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That Ebay terbo will come apart within a few weeks... you can bet on that.
Plus id listen to Scotty. He knows what he is on about...
Just approach your tuning very carefully... dont just throw a nissan tune at it and think it will work.
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Old 05-07-2015, 11:50 AM   #10
Payu STI
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Quote:
Originally Posted by Miggs1337 View Post
I'm interested to see what happens. This should be good
My case its different from most here on the forum I live in PR @ sea level My baseline 100% stock was 261awhp to 251 2nd pas heat soaked on a Dynojet
that its the same Dyno I will be using to tune!!
The Subaru ECU its a very powerful stock ecu compared to Nissan and let you make very good data logs
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Old 05-07-2015, 12:00 PM   #11
techguymaxc
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400WHP on a 20G with 93? Don't think so. Not unless your dyno reads super high. You might hit 350 on that setup.
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Old 05-07-2015, 12:17 PM   #12
Payu STI
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Quote:
Originally Posted by Rexcision View Post
That Ebay terbo will come apart within a few weeks... you can bet on that.
Plus id listen to Scotty. He knows what he is on about...
Just approach your tuning very carefully... dont just throw a nissan tune at it and think it will work.
I would listen him more carefully if his initial approach was more technical and respectful nobody here know me because I am new here but I will gain my respect with facts and proof!!
Dude its not even possible to throw a Nissan tune on a Subaru ecu I hope that was a joke jejeje!!
Never underestimate Puertoricans!!!
Home of some of the fastest compacts in the world jejeje
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Old 05-07-2015, 12:32 PM   #13
rallyweapon11
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Quote:
Originally Posted by techguymaxc View Post
400WHP on a 20G with 93? Don't think so. Not unless your dyno reads super high. You might hit 350 on that setup.
this...20G on 93 isnt going to make 400whp

go bigger, it will pop faster!
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Old 05-07-2015, 12:37 PM   #14
TriAxis 6
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Quote:
Originally Posted by Payu STI View Post
Such an ignorant comment!! Have you tuned a car at all??
I have enough confidence in my knowledge to show you a thing or two about tuning!!!
I will prove myself when I do it!!
I made some research before started tuning my car and When I saw the timing table on a stock 2008 STI I instantly figure it out why they brake ring lands even STOCK!!!!
I could feel even 100% stock the ecu pulling timing to aid the knock from the stock timing map and that was the first problem I solved an My logs @ 19psi on the VF39 came up with minimal to none knock learned and solid 11.5-.6 AFR steady on the 4th gear pulls so I am good!!!

BTW my motor still in one piece!!!

Compadre, tranquilízate un poco y escucha lo que dice Uncle Scotty que el conoce bastante pero muchas veces se porta como un pelotudo cuando hable..el pobre.
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Old 05-07-2015, 12:39 PM   #15
Rexcision
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Quote:
Originally Posted by Payu STI View Post
I would listen him more carefully if his initial approach was more technical and respectful nobody here know me because I am new here but I will gain my respect with facts and proof!!
Dude its not even possible to throw a Nissan tune on a Subaru ecu I hope that was a joke jejeje!!
Never underestimate Puertoricans!!!
Home of some of the fastest compacts in the world jejeje
I didn't mean it literally....
More like "don't tune it like it's a nissan".
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Old 05-07-2015, 12:47 PM   #16
Dave D.
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Quote:
Originally Posted by rallyweapon11 View Post
this...20G on 93 isnt going to make 400whp

go bigger, it will pop faster!
Agreed. Your VF whp ratings look comparable to Mustang dyno readings. You'll need to find a more generous dyno to get a 400whp rating.
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Old 05-07-2015, 12:59 PM   #17
boostdog
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Quote:
Originally Posted by Uncle Scotty View Post
elh....yeah...just do it


and when ya blow it all sky high...then ya know ya got it right


and your tuning experience on other platforms is out the window with subarus....subarus blow up when ya try what works for other makes

you WILL blow it sky high.....that is a 1000% fact
I heart u uncle scotty!
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Old 05-07-2015, 01:45 PM   #18
user1029
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Just strap a big turbo on the stock motor and run 9s ($6k total?)


C J doe.
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Old 05-07-2015, 01:53 PM   #19
powder8
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puerto rico home to some of the (insert racist epithet here)
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Old 05-07-2015, 02:15 PM   #20
Payu STI
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I knew shouldn't have post anything here!!! lollll same **** as any other car forum jejejejeje
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Old 05-07-2015, 02:18 PM   #21
Uncle Scotty
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hey...the OP d0000000000000d has a plan.....and that's good

its just the wrong plan

it is WELL known that these motors MIGHT make 360ish with all the mods and gods in order.....and good 93


but it wont make that for long

and my 06 has almost 150k on it at 20-21psi on 93....but it doesn't knock

the first couple hard knocks the OP gets at 20+psi and its gonna be all done

the op should get a good elh and wrap it .....and the up and the dp back to the end of the dp at least

the op should can the 400whp goal and just get the 20g going with all the mods....a 20g sti well tuned is one of the most fun cars to drive ever...even if it isn't 400whp

Last edited by Uncle Scotty; 05-07-2015 at 02:23 PM.
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Old 05-07-2015, 02:37 PM   #22
VladiWrX
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- overnight parts from Ebay
- Put it on Harry's tab
- Nissan t00ning skills
- 10 second car, but only with buster driving

I see success written all over this.
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Old 05-07-2015, 02:42 PM   #23
Miggs1337
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Quote:
Originally Posted by Payu STI View Post
I knew shouldn't have post anything here!!! lollll same **** as any other car forum jejejejeje
This forum is just more brutally honest than most. You have to look at your parts selection, fuel, and goals, and see that they aren't aligning, which is why everyone is responding the way they are.

I'm interested to see how long your car lasts using mostly ebay parts.
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Old 05-07-2015, 02:55 PM   #24
Uncle Scotty
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Quote:
Originally Posted by Payu STI View Post
I knew shouldn't have post anything here!!! lollll same **** as any other car forum jejejejeje
d0000000000000000d

chill.....its all good

we just been doin this for a L000000000ooooooooong time

we know what mistakes all the n000bs always make...you are nothing special

so don't get yer paties in a wad.....put the man pants on and buck up....

ya aint gunna make 4hhwhp on a 20g on 93 octane

and ya gonna blow it up.....the ALWAYS blow up....



almost always, anyway
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Old 05-07-2015, 03:11 PM   #25
VladiWrX
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just slap on Ebay 35R and run 9's

Pretty simple
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