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Old 02-21-2010, 12:09 PM   #1
crashtke
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Default Dyno Tune: 170k 2.5L + Sargent Power S256 Borg Warner kit makes 394awhp

I am posting up for the customer, Amonsta. This one was pretty surprising. I was a little apprehensive when I saw the odometer at 160k, but it has been very well maintained by the owner. We put the kit on the car and did a little street tune a little while ago at over 160k miles on this motor. The original (yes 160k on that too) OEM clutch went out shortly after putting the Borg Warner on and we had to get that taken care of before we could turn it up much. Andy Mullins put in an Exedy HD organic clutch which holds great and fabricated the intercooler piping to make everything a little more stream lined. After life getting in the way we were finally able to get together to get it on the dyno and finish this thing. The original motor now has over 170,000 miles on it. Who says Subarus are not reliable?!?

Event: dyno pull
Location: Mainstream dyno in Dallas, GA
Ambient Temp: 64 degrees +-
Elevation: 1,043 FT above sea level
Weather: mostly sunny
Car: 2004 STI
Tuner: Mike Sargent
Dyno Info: Dynojet
Peak HP at RPM: 394 @6250 Standard correction, 390 SAE corrected
Peak Torque at RPM: 365 @4800 Standard Correction, 362 SAE corrected
Transmission: 04 Sti 6 speed
Dyno Gear: 3rd
Baseline hp/tq for a stock on same dyno: 220? Never worked on this particular one before
Target Boost: 22
Target AFR: 10.8-11.1
Fuel: 93 octane unleaded
Engine/Power Modifications:
-Bone stock 170,000 longblock and intake manifold
-Sargent Power S256 Borg Warner turbo kit
-OEM Subaru wrx tgv's (flap removed) and fuel rails
-Injector dynamics 1000cc injectors
-SSAC Front mount intercooler-Modified piping
-Hallman pro boost controller
-Walbro 255 fuel pump
-Catback exhaust

Driveline Modifications:
-Exedy HD organic clutch
Suspension Modifications: Unknown
Other Modifications: Wheels...I do not recall the brand

3rd gear pull.


I went ultra conservative on this one with the timing and air fuels. Every little bit of boost kept making more and more power, but I decided to stop where we were. The Injector Dynamics bosch 1000's worked great. They are really very consistent and help not only with smooth power, but also with great drivability on the car. But with 170k on the engine I just started to get uncomfortable going any higher.

The funny part is the shop owner came over and cranked down on the straps about mid way through the runs and we saw a 12 hp and around 10 lbft of torque loss...same timing, air fuels, everything. That was the first time I had experienced that. The above run was with them cranked down. Loosened up where the tires were not pushed flat on the rollers it probably would have been over 400, but either way, the car feels great and pulls strong. This dyno was an above ground dyno, so gotta keep it tight I guess, lol. Would not want a car shooting off the dyno.

But hopefully he will be doing a built motor here in the next 6 months or so and we can turn it up more for him and see what this little Borg Warner S256 is capable of! At that time we will probably increase the intake size as well since it is close to maxing out the 3" inlet. Congrats Amonsta!
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Last edited by crashtke; 04-13-2010 at 09:19 PM.
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Old 02-21-2010, 02:11 PM   #2
STi Mikey
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Nice graph and holy milage!!

Perhaps the highest milage STi??

Definately the highest milage STi on the stock motor, haha.

I hope he enjoys it for another 170K!!
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Old 02-21-2010, 08:03 PM   #3
KB'izzle
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+1, highest Ive seen or heard of is like 90-100, maybe 120, thats where when you sell it, those sti's only get like $14k or less for them
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Old 02-21-2010, 08:43 PM   #4
modaddict
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sold to a good bud
awaiting next car

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wow, my 04 only has 42k!

what's the matter, don't want to rev that one out to 7500?
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Old 02-21-2010, 08:44 PM   #5
Csquared33
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ive got 96k on mine



nice numbers! still goin strong eh?
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Old 02-21-2010, 09:19 PM   #6
robbieshonda
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Nice tune Mike. thats going to be a fun car.
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Old 02-22-2010, 05:14 PM   #7
ZenMotors
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Congrats!
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Old 02-22-2010, 08:58 PM   #8
SubieFiesta
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and 2005 Subaru STi

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nice!

pics or ban!
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Old 02-23-2010, 09:10 PM   #9
crashtke
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I told Amonsta that you are awaiting pics. The ones I have would not do it justice!
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Old 02-24-2010, 04:10 PM   #10
ZenMotors
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Just another reason why we use Mike to Tune the Subarus that come to our shop.
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Old 02-24-2010, 05:49 PM   #11
TDagen
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FNF LSX Swap,E85 and more

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Looks solid , leave it to a bw to make 400 whp on a damn near 200,000 mile ride !!! Does the boost come back really fast in between shfts? This has me just itching for spring, I've got a bw 91-79 twin scroll (around 40r sized) waiting to meet some Bosch 2000cc's and a Garrett cored front mount....
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Old 02-24-2010, 09:07 PM   #12
amonsta727
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^^^Man this thing is bad ass! It has like no lag! Thats right 170k and counting. Hell I just put the first clutch in 5k ago. Picts to come as soon as I wash it! lol
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Old 02-24-2010, 09:41 PM   #13
TDagen
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FNF LSX Swap,E85 and more

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Nice work crashtke tuning all these borg warner rides , Btw I think most tuners would sweat big time trying to tune someones 170,000 mile ride looks like you handled it pretty damn well
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Old 02-24-2010, 09:43 PM   #14
amonsta727
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OOOOO he was nervous and even sweated a bit! Mike is an amazing tuner an awesome guy!
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Old 02-24-2010, 09:50 PM   #15
TDagen
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Quote:
Originally Posted by amonsta727 View Post
OOOOO he was nervous and even sweated a bit! Mike is an amazing tuner an awesome guy!
I would have been sweating too , When your tuning someone elses car its a different ball game than just tuning your own, you get on a mission to get everything done right with no errors b/c nobody wants to F up another mans ride...Looks good keep the borgs coming crashtke
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Old 02-24-2010, 10:01 PM   #16
crashtke
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Ya it got me a bit nervous, but the car seems to be taking it well. It just liked it richer than normal for some reason. Had it been on a fresh motor I would have taken it up a bit more, but I was NOT going to push this one.

We got 3 more coming. Sargent Power S366 twin scroll kit, S256 twin scroll kit and not sure exactly what the third one is going to be yet. The 366 will have 2200 cc injectors and be run on E85 with 9.5:1 compression
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Old 02-24-2010, 10:34 PM   #17
crashtke
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Quote:
Originally Posted by TDagen View Post
Looks solid , leave it to a bw to make 400 whp on a damn near 200,000 mile ride !!! Does the boost come back really fast in between shfts? This has me just itching for spring, I've got a bw 91-79 twin scroll (around 40r sized) waiting to meet some Bosch 2000cc's and a Garrett cored front mount....
As for this, yes, they do come back into boost amazingly fast...as fast as any ball bearing I have seen.
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Old 02-26-2010, 06:45 PM   #18
ZenMotors
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Can't wait to see those results!
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Old 02-28-2010, 10:09 AM   #19
crashtke
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Quote:
Originally Posted by TDagen View Post
Nice work crashtke tuning all these borg warner rides , Btw I think most tuners would sweat big time trying to tune someones 170,000 mile ride looks like you handled it pretty damn well
Well, Andy and I fab up the kits too. Andy does some amazing welding! We are looking at going into production with it, but it is a matter of getting the money or investors first.

Quote:
Originally Posted by ZenMotors View Post
Can't wait to see those results!
Mine should be interesting with the TS 366. I am going to see how far I can push the stock ECU. This one will be pretty decent too when we get the block rebuilt and turn it up!
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Old 02-28-2010, 11:26 AM   #20
GundamFan
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Wow, that's impressive, i love seeing stuff like this, im at 136k miles on my ej20 270whp for some time now, not as much as that STI but i'm content
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Old 02-28-2010, 11:34 AM   #21
amonsta727
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Ok guys sun is out gonna try and wash my car and get some picts up!!!
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Old 02-28-2010, 01:20 PM   #22
TDagen
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Quote:
Originally Posted by crashtke View Post

Mine should be interesting with the TS 366. I am going to see how far I can push the stock ECU. This one will be pretty decent too when we get the block rebuilt and turn it up!

Nice How big is the TS s366? The 366 will scream on spool up a local around here has one TS and it sounds sick! I picked up the BW Airwerks 91-79 TS (around 40R Sized) this spring for my car on E85 with 9.5:1 compression , I am using the Id 2000cc injectors too! I had the ID 1000cc last year and loved them!.... I am tuning using the stock computer too , I am going with the grp N rom so I can use SD ect ect ... Spring is aproaching fast ! Should get interesting around here...
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Old 03-01-2010, 03:15 PM   #23
crashtke
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Quote:
Originally Posted by TDagen View Post
Nice How big is the TS s366? The 366 will scream on spool up a local around here has one TS and it sounds sick! I picked up the BW Airwerks 91-79 TS (around 40R Sized) this spring for my car on E85 with 9.5:1 compression , I am using the Id 2000cc injectors too! I had the ID 1000cc last year and loved them!.... I am tuning using the stock computer too , I am going with the grp N rom so I can use SD ect ect ... Spring is aproaching fast ! Should get interesting around here...
Yeah, if I can get funds up to finish the car, spring will be a lot of fun. I think I am going to cheap out for now and just get a front mount and no dry sump. I can always add those in later. The custom intercooler is going to take some time to fabricate everything, so fmic is just cheap and easy. 366 is the same as what you have. S300sx, 91-79, 366, whatever name you want to call it. Funny, our builds will be very similar.
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Old 03-01-2010, 03:41 PM   #24
TDagen
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Nice I thought it may be around the same but it is the same , lol ... can't wait to see our results lol !
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Old 03-01-2010, 03:46 PM   #25
ZenMotors
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mispost.

Last edited by ZenMotors; 03-01-2010 at 03:57 PM.
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