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Old 09-26-2007, 11:43 AM   #1
akira02rex
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Default WRX 2.0L 20G Dyno w/ Ecuedit

To some this may not seem "official" but supposedly ecuedit does a fairly good job of plotting power/torque within 5% of what a typical load bearing dyno would report. But hey, all these tuners are using correction factors anyways to skew results.

The numbers seem to be on-par with my datalogs and what boost pressure I'm running so here it is:


^- 335whp & 298wtq

Details:
'02 WRX
Stock block and stock 5mt
Blouch td05-20G 7cm^2
STI tmic
Silicone inlet
3in tbe
modded stock injectors
Perrin drop-in filter w/ stock airbox


A/F is 10.8:1 at peak boost and 11.2:1 at redline.
Boost is 22.5psi.
Running 93oct pump gas.

Enjoy
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Old 09-26-2007, 12:12 PM   #2
crazymikie
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Would you mind sharing a log with your boost and engine load numbers?

I'm curious to see how well they correlate to the torque curve.


Thanks!
Mike
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Old 09-26-2007, 12:57 PM   #3
akira02rex
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Quote:
Originally Posted by crazymikie View Post
Would you mind sharing a log with your boost and engine load numbers?

I'm curious to see how well they correlate to the torque curve.


Thanks!
Mike
There is a log posted in Enginuity. But I must warn you, do not compare to your own vehicle's logs because my MAF table is scaled to 400g/sec.

The boost curve is also posted there. I can sum it up by saying it hits 22.5psi by 3800rpm and tapers to 20.5psi by 6500rpm.
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Old 09-26-2007, 01:02 PM   #4
Master2192
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Why does it taper? A 18G could hold 23 psi until about 6800 rpm and put down identical numbers. Maybe a pressure drop across the intercooler?
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Old 09-26-2007, 01:14 PM   #5
robbieshonda
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Quote:
Originally Posted by Master2192 View Post
Why does it taper? A 18G could hold 23 psi until about 6800 rpm and put down identical numbers. Maybe a pressure drop across the intercooler?

Cam roll off no need to push more boost when it doesnt want it. Most people drop the boost towards redline
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Old 09-26-2007, 01:24 PM   #6
Master2192
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Quote:
Originally Posted by robbieshonda
Cam roll off no need to push more boost when it doesnt want it. Most people drop the boost towards redline
Most of the time the boost drops off toward redline because the turbo can't keep up. In this case I believe the intercooler is showing some amount of restriction possibly from its small size. Other reason to drop boost toward redline, excessive back pressure causing detonation (too small exhaust side on turbo, needs external wastegate).
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Old 09-26-2007, 02:06 PM   #7
lawn boy
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stock clutch too? hows it holding up?
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Old 09-26-2007, 03:48 PM   #8
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Quote:
Originally Posted by Master2192 View Post
Why does it taper? A 18G could hold 23 psi until about 6800 rpm and put down identical numbers. Maybe a pressure drop across the intercooler?
Quote:
Originally Posted by Master2192 View Post
Most of the time the boost drops off toward redline because the turbo can't keep up. In this case I believe the intercooler is showing some amount of restriction possibly from its small size. Other reason to drop boost toward redline, excessive back pressure causing detonation (too small exhaust side on turbo, needs external wastegate).

Ehhh, nevermind.
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Old 09-26-2007, 04:12 PM   #9
Master2192
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Quote:
Originally Posted by SnoCoWRX
Ehhh, nevermind.
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Old 09-27-2007, 10:32 AM   #10
akira02rex
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Quote:
Originally Posted by Master2192 View Post
Why does it taper? A 18G could hold 23 psi until about 6800 rpm and put down identical numbers. Maybe a pressure drop across the intercooler?
It is the intercooler holding me back and possibly because the stock headers as well. But, the numbers are pretty good considering it's an sti tmic, if you will.

I have never seen an 18g hold 23psi past 6000rpm either. It is tapered because of the limits of the entire system. I did not taper it myself because I'm using an mbc if that proves anything.

Testes is running very similar numbers, actually almost identical, to mine using a big tmic.
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Old 09-27-2007, 10:36 AM   #11
saab-on-the-cobb
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NEAT!

Time to take it to the track!



SOTC
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Old 09-27-2007, 10:57 AM   #12
drewwrxrogers
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EWG!!!! It will make a world of dif. Hope your savin money for a new tranny, it wont hold long!
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Old 09-27-2007, 12:17 PM   #13
Master2192
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Quote:
Originally Posted by akira02rex
It is the intercooler holding me back and possibly because the stock headers as well. But, the numbers are pretty good considering it's an sti tmic, if you will.

I have never seen an 18g hold 23psi past 6000rpm either. It is tapered because of the limits of the entire system. I did not taper it myself because I'm using an mbc if that proves anything.

Testes is running very similar numbers, actually almost identical, to mine using a big tmic.
Ohh I wasn't saying the numbers were bad Its just you have a restriction and untapped power. You've got the car tuned very good, I would have gone a bit leaner with less timing but thats personal preference.
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Old 09-27-2007, 01:16 PM   #14
eqlized_aero
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Quote:
Originally Posted by akira02rex View Post
It is the intercooler holding me back and possibly because the stock headers as well. But, the numbers are pretty good considering it's an sti tmic, if you will.

I have never seen an 18g hold 23psi past 6000rpm either. It is tapered because of the limits of the entire system. I did not taper it myself because I'm using an mbc if that proves anything.

Testes is running very similar numbers, actually almost identical, to mine using a big tmic.
My 18G will hold 24 PSI to 7K RPM.
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Old 09-27-2007, 01:19 PM   #15
TheShad0w
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Quote:
Originally Posted by eqlized_aero View Post
My 18G will hold 24 PSI to 7K RPM.
still running a stock motor?
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Old 09-27-2007, 01:25 PM   #16
eqlized_aero
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Quote:
Originally Posted by TheShad0w View Post
still running a stock motor?
Yep, stock 2.0L block, stock heads. Everything else is not stock.

Boost gauge reads 24 PSI all the way to redline.
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Old 09-27-2007, 01:26 PM   #17
eqlized_aero
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Nice 20g setup btw.

Bringing it to the shootout on Saturday?
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Old 09-27-2007, 01:29 PM   #18
testes1010
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Quote:
Originally Posted by akira02rex View Post
Testes is running very similar numbers, actually almost identical, to mine using a big tmic.
very similar numbers, I am running a Hyperflow TMIC, Crucial P&P&C'd Manifolds & an UR/Tial 38mm EWG setup, Hallman PRO for boost control. I hold 23psi to redline, no problem.

this was last dyno I have on file.

Last edited by testes1010; 09-27-2007 at 01:34 PM.
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Old 09-27-2007, 02:53 PM   #19
TheShad0w
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Quote:
Originally Posted by eqlized_aero View Post
Yep, stock 2.0L block, stock heads. Everything else is not stock.

Boost gauge reads 24 PSI all the way to redline.
Not to go OT or anything - but I'm interested in what type of MAF housing and what type of measurements (if any) you have had as far as g/s and engine load.

Pretty impressive that these engines are holding up so well considering the design and all.
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Old 09-28-2007, 02:05 AM   #20
eqlized_aero
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I'm using a perrin blow thru maf, which is 3" in diameter where the maf sits. Not sure what I'm scaled to, so whatever g/s I get wouldn't mean much.
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Old 09-28-2007, 02:34 AM   #21
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great #'s..
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Old 09-28-2007, 03:07 AM   #22
Suberman
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Quote:
Originally Posted by akira02rex View Post
There is a log posted in Enginuity. But I must warn you, do not compare to your own vehicle's logs because my MAF table is scaled to 400g/sec.

The boost curve is also posted there. I can sum it up by saying it hits 22.5psi by 3800rpm and tapers to 20.5psi by 6500rpm.
what gear did it hit 22.5psi by 3800rpm? That seems really early as compared to my crap tuned 18g only hitting 22psi by 4500+rpm in 3rd with my STI RA ratios with 4.444 final drive. Its probably not loading the engine enough.
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Old 09-28-2007, 03:11 AM   #23
Master2192
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^^^That also depends on your boost control. He is using a MBC which usually has the fastest spool up possible.
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Old 09-28-2007, 03:22 AM   #24
Suberman
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I'm running AVCR
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Old 09-28-2007, 09:29 AM   #25
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Quote:
Originally Posted by Suberman View Post
I'm running AVCR
you need to retune it OR get a different BC.
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