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Old 12-11-2007, 01:28 AM   #1
PERRINJeff
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Default PERRIN 2008 STI Dyno Results........

There is not much to brag about, but, now that i have your attention, lets see what these new STI's put down!



The first couple runs showed about what we would expect to see. Most STI's put down about 230-240WHP, and we were right there. Same with torque, we were pretty close to what everyone sees.

Few things to note, redline is 6500, not 7000. What?? Well that is simple, Subaru only needed to make the 305HP mark and it doesn't need to go the extra 500 RPM to get there. If you look at other peoples dyno plots on a stock car they peak around 6000RPM. I am not saying that it can get some more power, or better shift points raising the redline, but that is my guess why Subaru did that.

We have 92 octane here, and as many know the stock ECU programing loves race fuel, higher octanes, and water injection. Water injection is definitely something we are incorporating in our futures plans with this car. You will notice on the graphs that there are 2 lines. 11 of the 15 runs were just like the lower HP line. This is what we are using as our base power and tq numbers. The other 4 runs were where the ECU was happy, and was running zero knock retard and adding a couple degrees. These runs only happend right after we turned the ignition off, and did a run.

With the 15 runs we did, we tested the I-drive stuff out. Like in the LGT spec-b, it does effect how the car feels, but does it effect power?? Not a single bit! I expected differences in low end power, but nothing! Boost was the same, power, tq, boring!! The only thing I-drive does is change the Thottle position vs. the accelerator position. Which does effect low end power, but only in normal driving conditions. When it comes time to tune these, being able to change maps with the poke and twist of a button will be very cool.

We tried Deltadash to see if we could log some data, and to my surprise it worked, and showed the one thing i was most interested in. The Exhaust AVCS! Not that everyone knows, but the new 2008 STI has AVCS on both the intake and Exhaust cams. The intake is advaced at lower RPM and load, but turned off at higher RPM and load. The AVCS for the Exhaust cam is a little different, it is not advanced, but retarded. Under load, the Ext cam is retard the whole time, ranging from 20 at low and increases to 30 in the midrange, then back to 20. The only time it goes to zero is under normal driving. The question is, when we can tune this, where will it help make more power?

Just to make things clear, this is totally stock with a whopping 40 miles on the clock. We went from the dealer, took an hour drive, and rolled right up to the dyno. A little history on the Dynapack and how it is setup. Many people run the cars in 4th gear, at for 12 seconds. Because of our big plans with this car, we started in 5th gear, and run it for 14 seconds. Both of these factors play into the actual HP and TQ numbers by lowering them. We could have made the dyno read a bit higher, by changing to 4th gear, or making the run shorter, but for tuning purposes, and future part comparos, this is what we decided on.

I know you all are thinking, shut up and give us more data and pictures! We just got the car a few hours ago! What more can you expect!

Look for lots of info tommorow!
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Last edited by PERRINJeff; 12-12-2007 at 11:05 AM.
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Old 12-11-2007, 01:31 AM   #2
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Pics of the car?
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Old 12-11-2007, 01:37 AM   #3
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Tomorrow, just not enough time to get that all done today. Its White, which is a great color. It really makes the black grill and exits pop! We will be working diligently to get pics and a whole write up done by tomorrow.
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Old 12-11-2007, 01:46 AM   #4
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Sweet thanks for the info, i cant wait to see photos too.


cant wait to see what you guys are going to do to the ride
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Old 12-11-2007, 01:48 AM   #5
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Here is a photo a local took at the dealer, but wait until tomorrow!
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Old 12-11-2007, 02:10 AM   #6
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meh, looks so plain on the outside, but it seems like Subaru new what they were doing with the motor this time. As for exterior, no, Subaru still fails at that.

Awesome that you guys got an 08 sti already since they just came out and already having plans for tuning/parts? Props to you guys.
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Old 12-11-2007, 02:10 AM   #7
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SWEET! Man I look forward to seeing what these cars are capable of... I love the fac that it can be possible to swich maps so easily by using the i-drive feature... I still dunno if I like the looks of these things, but I'm sure it will grow on me...

One question: Do you think that the newer sti's will be able to unlock more power than say an 07 sti, by just a simple tune and TBE? From what I've heard this version sti had slower track times at tsukuba than the previous models, although still faster than the EVO X
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Old 12-11-2007, 03:27 AM   #8
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Congrats on the new car.
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Old 12-11-2007, 03:29 AM   #9
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gah double post
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Old 12-11-2007, 03:30 AM   #10
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I know I am being lazy when I ask but, what does a stock STi of other years put down on YOUR dyno?
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Old 12-11-2007, 04:12 AM   #11
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thanks for posting your results on the new sti!
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Old 12-11-2007, 04:16 AM   #12
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what does stock 04 05 06 STi put down on this dyno..
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Old 12-11-2007, 04:30 AM   #13
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Quote:
Originally Posted by PERRINJeff View Post
There is not much to brag about, but, now that i have your attention, lets see what these new STI's put down!

The first couple runs showed about what we would expect to see. Most STI's put down about 230-240WHP, and we were right there. Same with torque, we were pretty close to what everyone sees.
Fools need to learn how to read.
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Old 12-11-2007, 04:36 AM   #14
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scribe
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Old 12-11-2007, 04:52 AM   #15
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Quote:
Originally Posted by darksc00by View Post
I know I am being lazy when I ask but, what does a stock STi of other years put down on YOUR dyno?
I would like to know stock STi of other years on your dyno using the same 5th gear 14second pull, 92 octane gas etc...

Last edited by bcarm; 12-11-2007 at 05:17 AM.
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Old 12-11-2007, 05:10 AM   #16
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Quote:
Originally Posted by marrenr813 View Post
Fools need to learn how to read.
hahaha..
i just didnt read it at all..
even a long time member can make a mistake..

so dont call anyone " fools "
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Old 12-11-2007, 06:11 AM   #17
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thanks for the info on the dyno Jeff.
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Old 12-11-2007, 06:22 AM   #18
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er...do a quick pull against a previous model STi? that's "real world" power right there from 40mph-120mph on a closed track of course.
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Old 12-11-2007, 08:56 AM   #19
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JEFF,

it has the same long gears as the 07's right?

-sf
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Old 12-11-2007, 08:56 AM   #20
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Can't wait to see what a difference the exhaust AVCS makes....
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Old 12-11-2007, 09:14 AM   #21
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can you post a log?
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Old 12-11-2007, 09:16 AM   #22
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On board...

Patrick
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Old 12-11-2007, 10:18 AM   #23
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Jeff,

I know it's really early to ask this. But just from looking at the layout in person, any feel for which existing aftermarket parts might work and which ones definately will not bolt up (headers, fuel rails, up-pipe, downpipe, catbacks, etc)?
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Old 12-11-2007, 10:51 AM   #24
PERRINJeff
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Quote:
Originally Posted by spoolindc2 View Post
SWEET! Man I look forward to seeing what these cars are capable of... I love the fac that it can be possible to swich maps so easily by using the i-drive feature... I still dunno if I like the looks of these things, but I'm sure it will grow on me...

One question: Do you think that the newer sti's will be able to unlock more power than say an 07 sti, by just a simple tune and TBE? From what I've heard this version sti had slower track times at tsukuba than the previous models, although still faster than the EVO X
We will find out soon, when we can tune it with the AccessPORT, but they mentioned the I-drive could be called the M-drive (MAP Drive)

Quote:
Originally Posted by darksc00by View Post
I know I am being lazy when I ask but, what does a stock STi of other years put down on YOUR dyno?
Quote:
Originally Posted by marrenr813 View Post
Fools need to learn how to read.
Nope, its fine, i wasn't really clear about those numbers from our dyno or not. On the Dynapack, most all stock STI's put down 230-240WHP, and 260-270ft-lbs. But most of these were done in 4th gear, and 12 second runs. So if our 2008 STI makes about the same using the higher gear, then if we did it in 4th, it would show a bit more power. Before we go to far with the car, we will try some 4th runs just for fun. The problem is that with stock turbos, and a good IC, and exhaust, the TQ the STI can put out, might over come the holding TQ of the dyno (at really row RPM). Doing 5th gear solves the problem. For us its not about the number, more of the difference from one to another. So its good to keep things as consistent as possible.

Quote:
Originally Posted by SubieFiesta View Post
JEFF,

it has the same long gears as the 07's right?

-sf
You got it! Basically is 2nd3rd, and 4th, which are longer. the others are the same as the 2006 STI.

Quote:
Originally Posted by T-WRX View Post
Can't wait to see what a difference the exhaust AVCS makes....
Your telling me!! Hopefully very shortly

Quote:
Originally Posted by SubieFiesta View Post
can you post a log?
I will try to do that, if nothing else, i will cut at past it in text format.

Quote:
Originally Posted by DocDetroit View Post
Jeff,
I know it's really early to ask this. But just from looking at the layout in person, any feel for which existing aftermarket parts might work and which ones definately will not bolt up (headers, fuel rails, up-pipe, downpipe, catbacks, etc)?
Well, we have a fitment for the 2008 WRX right now, and the only thing that will not work is the TMIC. And the WRX TMIC might work, but at this point, a completely new TMIC will be made. Not that ours won't make power over stock, but the stock IC and scoop are wider than before, so we can make an even wider core!
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Old 12-11-2007, 11:02 AM   #25
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berrry nice cant wait to see what the avcs on the exhaust will do.
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