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Old 06-08-2004, 09:12 PM   #1
GameOver
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Thumbs down STI Accessport Dyno results....dyno plot attached

Ok guys, here it goes. This morning I drove to south coast subaru to get my accessport. So I got it, loaded the 'stage 2 91 octane' map on the car at SCS's parking lot and drove up to www.harmanmotive.com to dyno the car. So here are my thoughts on it '............' <----Interpret my silence and judge for yourselves.




Please post what you think of 'THIS'.

thanks

......anyone wanna buy the accessport from me ???

later


legend:
blue = pde catted dp + borla 3 inch catback
red = blue + accessport on stage 2 91 octane
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Old 06-08-2004, 09:29 PM   #2
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What's up with that!

I should have mine this week, I don't feel so excited now
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Old 06-08-2004, 09:58 PM   #3
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Quote:
Originally posted by PoG
What's up with that!

I should have mine this week, I don't feel so excited now

Im about to get depressed!
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Old 06-08-2004, 10:09 PM   #4
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whats the boost at??

Is it so safe its no fun?
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Old 06-08-2004, 10:11 PM   #5
GameOver
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18 tappering to like 12 at redline

cant remember exactly
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Old 06-08-2004, 10:14 PM   #6
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Have you tryed a different map (91 octane) or even stage 1.

I wonder if the ECU is still learning your setup (non-cobb TBE)
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Old 06-08-2004, 10:16 PM   #7
GameOver
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the stage 1 91 0ctane map gave me like 5 hp less
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Old 06-08-2004, 10:24 PM   #8
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Quote:
Originally posted by GameOver
the stage 1 91 0ctane map gave me like 5 hp less


If you get some answers from cobb, let us know.
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Old 06-08-2004, 11:10 PM   #9
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Did you download the new map management software released yesterday?
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Old 06-08-2004, 11:36 PM   #10
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The 2.0L maps don't taper boost that much. My stage one tapers from about .1 MPa to about .09 MPa.

I would follow SemperFiSti's lead and make sure the AP is really changing your boost targets properly.

The torque curve you posted does not look like a typical reflashed curve.
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Old 06-08-2004, 11:39 PM   #11
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Quote:
Originally posted by SemperFiSti
Did you download the new map management software released yesterday?

Nope, no new software downloaded.
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Old 06-08-2004, 11:43 PM   #12
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Also, you are making a crap load more power between 3000 and 4000 rpm, like 40 whp. That has to register on the butt dyno.

Also, if it works like the 2.0 AP, give it a day or so and a few software releases. And be prepared for "restrictor" fixes and the like.
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Old 06-08-2004, 11:52 PM   #13
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Wow... that dyno plot looks like someone was haveing a seizure. Dyno plots realy should not look like that...




You know that it takes a while for the ecu to get used too the new settings... Your making a 20lbs of tq gain, and thoes numbers will go up as everything settles.
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Old 06-08-2004, 11:53 PM   #14
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Quote:
Originally posted by GameOver
Nope, no new software downloaded.
Check out the new software... http://www.cobbtuning.com/sti/accessport/
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Old 06-09-2004, 12:03 AM   #15
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It should get faster as you drive it more. . at least that's how it's been with most ECU reflashes. I have an Ecutek reflashed ECU and another ECU with AP waiting to go on for comparison once they come out with a map for a FMIC. From what I've read from other AP users, it takes a few days for the ECU to learn and the car smoothens out and gets faster. If you just flashed the car and put it on the dyno, the ECU was most likely still learning.

Calvin
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Old 06-09-2004, 12:20 AM   #16
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That doesn't really surprise me on 91 octane gas. You did make 24 ft-lbs more torque and more hp through the midrange powerband. The accessport just doesn't run much boost at higher rpms on the 91 octane maps for safety reasons but you can see what it does in the low end. At 3500rpm you are making 50 ft-lbs more torque than stock... Remember their stage2 dyno plots on their page are using a stock STI, not one with a different exhaust or any other modifications. It's also running 93 octane gas.
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Old 06-09-2004, 12:21 AM   #17
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graph looks funny because it needs smoothing
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Old 06-09-2004, 12:32 AM   #18
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Quote:
Originally posted by WRX Jim
graph looks funny because it needs smoothing


What? That has nothing to do with the imput its getting from the car... thats the dynos problem. Torque does not move up and down as much as 5 to 10 lbs in 20-30 rpm.
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Old 06-09-2004, 12:53 AM   #19
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I think with one more day of driving you will definitely have a bigger and smoother power increase.
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Old 06-09-2004, 01:03 AM   #20
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The Cobb setup is a generic map. It is designed to keep your car nice and safe. This is fairly typical of flashes like this. I only like to custom tune cars to around 90% (unless the owner wants the car on the edge). A generic reflash may reflect around 80% comparatively. Cobb has to account for a worst case senario and develop a baseline from there. The pecentages above are subjective, and are merely used to make my point. They don't reflect power necessarily, but just the amount of safety in a tune.


That being said, 20 lb ft of torque is a ok gain. A custom tune will give you more of the gains you are looking for. You will never get all out performance with an over the counter map or tune. It sounds like a UTEC or UNICHIP may be more along the lines of what you are looking for. The drive between Harman Motive and South Coast Subaru should have been enough time for the car to "learn" what it needed to. Espically if you reset the ECU beforehand.

Comparatively, a car that we set up made 343 lb ft of torque and only 293 HP on that same dyno. We used a Dynamispeed stage 1 on that STI (GP MOTO header, turboback, intake and GP MOTO PNP Unichip) w\ the stock VF39. The map on that car was our generic baseline map that I usually tune from. The top end is very conservative w\ timing which accounts for the low power on the top end. Typically cars pick up 25-30+WHP after fine tuning.

I can scan the dyno sheets if you would like to see them.


Just some food for thought.


Regards,

Ashley
Dynamispeed

Last edited by Dynamispeed; 06-09-2004 at 06:30 AM.
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Old 06-09-2004, 01:39 AM   #21
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Ashleys rite on the bar with his response, keep in mind Trey and Cobb Tuning are very good tuners, yet they tune at a safe level, that will keep the car at the bare minimum, there are other tuners and ecu upgrades available that will squeeze every ounce of power out of the sti.

Keep in mind the sti is a beast from the factory to begin with, as it is aggressively tuned close to its peak, so the difference may not be as subastantial as it would be with the Impreza WRX model which was detuned to begin with....

Honestly i expected this outcome as it is the same as the WRX Accessport that was released, gained about 40-50bhp at the flywheel +/-5. What Cobb has in store for the Accessport is something to rejoice about as soon many Cobb tuned cars will have the ability to play and custom tune to their interest with the release of the AP Street Tuner and Pro Tuner. The maps as of yet are just that base generic maps, but soon the difference of the ecutek and cobb and alike will be differentiated as the ease of use with the AP is outstanding, what other ecu upgrade will let you change maps on the fly and still retain your ecu 100 flashes? and the like.... The port itself if really cool...

hands up to cobb, and for those looking for tremendous power i agree you wont find it on the AP just yet, but stay tuned....
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Old 06-09-2004, 02:56 AM   #22
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Ill give them credit for the map change on the fly



But yeah, Ill drive it like a week or so and then maybe dyno it again.
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Old 06-09-2004, 07:32 AM   #23
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Quote:
Originally posted by totoherbs


What? That has nothing to do with the imput its getting from the car... thats the dynos problem. Torque does not move up and down as much as 5 to 10 lbs in 20-30 rpm.
I'm not sure why you responded that way but the graph does look like that because it's not smoothed, which is the dyno software. All raw dyno plots look something like that and the software is responsible for making it look pretty.
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Old 06-09-2004, 08:24 AM   #24
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You've got to look at area under the curve. Everyone is so hung up on peak hp increase and peak torque increase. Between 2900 and 4000 you're making gobs more torque. That's the sweet spot on the stock turbo that should make the car feel tons faster. Hell, at 3400 rpm you're making almost 70 more ft/lbs. And 40 more hp at 3500 rpm.

Seems like good gains for a generic map on 91 octane.

Frank
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Old 06-09-2004, 09:30 AM   #25
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Quote:
Originally posted by fmowry
You've got to look at area under the curve. Everyone is so hung up on peak hp increase and peak torque increase. Between 2900 and 4000 you're making gobs more torque. That's the sweet spot on the stock turbo that should make the car feel tons faster. Hell, at 3400 rpm you're making almost 70 more ft/lbs. And 40 more hp at 3500 rpm.

Seems like good gains for a generic map on 91 octane.

Frank
Bingo! I was going to post 'area under the curve' as well until this post... so now, I'll just 'ditto' it. I can't imagine that the car doesn't feel noticably gruntier down low to mid... right where you use it most day to day.

I bet it picks up more over the next few days... my AP Stage2 flash took a few days to 'optimize' itself.

-James
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