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Old 07-16-2009, 10:18 AM   #1
ohm
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Default 2007 STI 405whp / 339wtq - Dom3

Car is as follows:

2007 STI with 22000 miles
Dominator 3.0R Turbo 3" Inlet with IWG
Deatschworks 850cc Injectors
APS TMIC
APS 70mm CAI
APS Turbo Inlet
APS R1 3" TBE
APS BOV
TGV Deletes
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Old 07-16-2009, 11:47 AM   #2
Steve.804
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Rotated 35R Jorge Tuned

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Wow man what an interesting graph! The power is great but you shouldnt be hitting peak torque at 6k rpm. I'd expect it closer to 4k rpm and making 20-30ft/lbs more. But that top end looks great!
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Old 07-16-2009, 11:56 AM   #3
Slimsti
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Looks good nice numbers! 405whp is gross.Cleo always does a nice job.
Time for a ewg, Your torque will go way up. Mine did!
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Old 07-16-2009, 11:57 AM   #4
Clark_Kent
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Who tuned the car? How much boost and why are you only making 339wtq but making such high HP on W/I?
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Old 07-16-2009, 12:54 PM   #5
ohm
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Cleo at Precision tuned it, great guy.

I am making 19psi @ 3500 rpm and 23psi by 5000 rpm.

Torque is lower than expected, but I was told that an EWG would fix that right up. Is this common torque # for IWG Dom3's?
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Old 07-16-2009, 02:05 PM   #6
Jeremy05sti
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I seem to make much more torque with my dom 3.0r but labout 30 less whp then you either way looks good grats mate
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Old 07-16-2009, 02:08 PM   #7
ohm
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Quote:
Originally Posted by Jeremy05sti View Post
I seem to make much more torque with my dom 3.0r but labout 30 less whp then you either way looks good grats mate
Are you running meth?

Are you running an IWG or EWG?
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Old 07-16-2009, 02:13 PM   #8
Illusive
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Quote:
Originally Posted by ohm View Post
Cleo at Precision tuned it, great guy.

I am making 19psi @ 3500 rpm and 23psi by 5000 rpm.

Torque is lower than expected, but I was told that an EWG would fix that right up. Is this common torque # for IWG Dom3's?
it looks like steady boost creep to me from looking over your boost chart, especially considering you have a mbc.
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Old 07-16-2009, 02:16 PM   #9
ohm
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Quote:
Originally Posted by Illusive View Post
it looks like steady boost creep to me from looking over your boost chart, especially considering you have a mbc.
Explain, why would you say that? I am interested in hearing your theory.
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Old 07-16-2009, 02:20 PM   #10
Clark_Kent
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No, those tq numbers are not common. You should be making far more tq than that even especially with W/I. Those tq numbers look like Stage II tq figures. I know all dynos ready different blah, blah, but I'm just sayin.
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Old 07-16-2009, 02:29 PM   #11
ohm
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Quote:
Originally Posted by Clark_Kent View Post
No, those tq numbers are not common. You should be making far more tq than that even especially with W/I. Those tq numbers look like Stage II tq figures. I know all dynos ready different blah, blah, but I'm just sayin.
My Stage 2 setup net me 338wtrq, so I would agree. I did expect more torque considering the meth variable too, but what do I know.
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Old 07-16-2009, 02:34 PM   #12
GeneralTJI
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Your peak torque may be a little low, but look how long it holds a decently high torque number.. Doesn't drop off so fast, thats why you are making nice strong HP on the top end. I personally prefer this type of powerband.. some do, some don't depends on what your doing. Doesn't have quite the same mid range grunt, but I bet it pulls harder and harder as you rev it out.
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Old 07-16-2009, 02:38 PM   #13
Steve.804
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Well your stock turbo is going to make massive torque because it goes into boost at such an early rpm. You really cannot compare torque figures from a really small turbo and a much larger one. Making torque later in the RPM is more difficult than making torque earlier. That is why your vehicle still making 300ft/lbs at redline is a great sign. I wonder if there is something mechanical going on that is limiting your midrange. My guess would be you need to tighten your WG but you should probably talk to Cleo and see what he recommends. An EWG will certainly help but an IWG should still perform well.
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Old 07-16-2009, 02:44 PM   #14
Steve.804
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Quote:
Originally Posted by GeneralTJI View Post
Your peak torque may be a little low, but look how long it holds a decently high torque number.. Doesn't drop off so fast, thats why you are making nice strong HP on the top end. I personally prefer this type of powerband.. some do, some don't depends on what your doing. Doesn't have quite the same mid range grunt, but I bet it pulls harder and harder as you rev it out.
I agree, a flat torque curve is the ultimate goal, but that is assuming you're making proper torque to being with. This turbo should have much more of a slope to it while still making the same at redline as it does now.

If your turbo is capable of almost 24psi at redline and 19psi at 3500rpm, it shouldnt take 3000rpm to make up the difference.
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Old 07-16-2009, 02:51 PM   #15
ohm
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Steve, Rich actually wanted to tighten the WG to see if that was what was causing it. Would you think a leak of some sort maybe?



The car pulls like crazy all the way to redline, which is insane.
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Old 07-16-2009, 02:58 PM   #16
Jeremy05sti
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Quote:
Originally Posted by ohm View Post
Are you running meth?

Are you running an IWG or EWG?

no meth and I am running the IWG making about 380wtq with pretty much you same mods
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Old 07-16-2009, 03:09 PM   #17
kellygnsd
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Quote:
Originally Posted by ohm View Post
Explain, why would you say that? I am interested in hearing your theory.
Because if by 3500 rpm you're already at 19psi it shouldn't take 1500 more rpm to get to 23 psi. If you WG is wide open trying to limit boost but can't bypass enough gas boost will continue to still build slowly.
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Old 07-16-2009, 04:44 PM   #18
Steve.804
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^Exactly. As an example my previous 02 WRX w/ an 18G had a very loose actuator arm on the wastegate. The result was full boost at 5k rpm and it tapered hard to redline. After giving the bolt a few twists and putting it back on the dyno to make sure everything was happy I was making 21psi at 3700rpm.
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Old 07-16-2009, 05:03 PM   #19
ohm
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Quote:
Originally Posted by Steve.804 View Post
^Exactly. As an example my previous 02 WRX w/ an 18G had a very loose actuator arm on the wastegate. The result was full boost at 5k rpm and it tapered hard to redline. After giving the bolt a few twists and putting it back on the dyno to make sure everything was happy I was making 21psi at 3700rpm.
Interesting, similar to what I am seeing, 19psi then 23psi till redline.
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Old 07-16-2009, 05:48 PM   #20
Steve.804
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Well my graph looked much different than yours. Yours is still hitting hard in the early rpm but something is holding it back until you're high in the RPMs. My graph before tightening the wastegate looked like a 35R on a 2.0 WRX. It was just dead until about 5k RPM. With that said I cannot say for sure it is the WG but that is where I'd start.
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Old 07-16-2009, 10:46 PM   #21
OBPNUT
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Could you please PM me with some pics of that turbo blanket?

TIA
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Old 07-17-2009, 12:31 PM   #22
ohm
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Well, it turns out I discovered I had a meth leak from where the hose was connected to the hose fitting. Meth was not flowing correctly (overflow condition), and most likely air was escaping from here too.

The question is, would this impact my #'s? I am thinking yes, but a solid yes or no would be nice.
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Old 08-14-2009, 03:04 PM   #23
ohm
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Default 349whp / 329wtrq

After all the issues I was having with the IWG / boost creep, I went with the Grimmspeed EWG route.

Same setup I originally had, but I removed the APS BOV, and Turbosmart MBC. Using the stock BPV and stock boost solenoid.



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Old 08-14-2009, 03:37 PM   #24
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John at Akuma did a nice job!
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Old 08-14-2009, 03:49 PM   #25
AlxSti
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Nice choice on the GS EWG.
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