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Old 07-15-2013, 07:48 AM   #1
ericv
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OMGHi2U 2013 WRX STi - Does subaru restrict power during the break in period???

2013 WRX STi - Does Subaru restrict power electronically or otherwise during the break in period???

I have owned many Subaru WRXs & STis over the years. I am currently at 500 miles on a completely stock 2013 WRX STi. I have been going through the RPM ranges as recommended by Subaru. I do not know why but the car just does not have the "snap" during acceleration that my stock 2011 WRX has. Honestly, it feels slow like its being held back.

I exercised the STI a little to compare it to my stock 2011 WRX. On a measured strip of road where the stock 2011 WRX can reach 80mph, my STi is only reaching 68mph.

My boost gauge consistently holds about 15 psi 3rd through 6th gears. Could Subaru be restricting fuel during break in? Retarding timing?

I would like to put my accesport in but too low on the mileage yet.

Any ideas???
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Old 07-15-2013, 07:56 AM   #2
HinshawWRX
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No, Subaru does not have a restriction on the car to limit power for the first 1K miles. And you can install your AP at any time and flash stage 1.
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Old 07-15-2013, 08:28 AM   #3
Cathexis
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You can use tthe accessport to log anytime without marrying it. I suggest you do a log, post it to google docs, and let us take a look. By the time the wrx hits 80 the STI should be at least 80+. They are only neck and neck until the wrx shifts to third around 70.
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Old 07-15-2013, 10:55 AM   #4
shamrock 05
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You realize that ur sti has Econ, sport and sport sharp modes right..... are u in econ and wondering why its not fast?

and if u flash it, u realize that u are playing russian roulette with ur warrenty right
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Old 07-15-2013, 11:25 AM   #5
BApat
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Quote:
Originally Posted by shamrock 05 View Post
You realize that ur sti has Econ, sport and sport sharp modes right..... are u in econ and wondering why its not fast?

and if u flash it, u realize that u are playing russian roulette with ur warrenty right
He has to know the different throttle response controls because he said that the boost is being held at 15psi (which the S# mode is set for). Also, I believe that when you unmarry the accessport it shows no signs of tampering on the ECU. I don't know that for fact but many people on here have said that they have flashed their cars and when they needed warranty work, unmarried it. OP, I don't believe there is a programmed break in period to agree with some of the other posts. I have a 2013 as well but did not do very spirited driving until after 1k miles so it is hard for me to say how it performed before the 1k mark.
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Old 07-15-2013, 01:34 PM   #6
trev762
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Quote:
Originally Posted by shamrock 05 View Post
You realize that ur sti has Econ, sport and sport sharp modes right..... are u in econ and wondering why its not fast?

and if u flash it, u realize that u are playing russian roulette with ur warrenty right
Rolleyes:/

When the Accessport is unmarried right it is not detectable period!!!
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Old 07-15-2013, 01:50 PM   #7
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Flat out, the new ones don't feel nearly as "fast" to me. My 04 sti felt like a rocket in the low gears when WOT, but having experienced a few GR gens, they dont pack the same butt dyno entertainment for me. My 12 WRX feels like a slug. Maybe youre used to GDs?
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Old 07-15-2013, 03:37 PM   #8
ALOKIN
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The GRs make up a lot of ground when you add a new DP and tune. Going stage II really wakes the car up quite a bit.
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Old 07-15-2013, 03:49 PM   #9
neg_matnik
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I don't understand why anyone would be surprised: 2011 WRX is *lighter* than 2013 STI but both cars deliver about the same amount of power to the wheels.
Let's look at a few facts:
- 2013 STI wheel and tire combination is heavier (larger diameter wheels and wider tires) than 2011 WRX wheel and tire combo
- 2013 STI has larger and thicker 13" rotors in the front compared to 11.6" smaller and thinner rotors on the 2011 WRX. Same story with rear rotors (12.6" STI vs 11.3" WRX).
I'm not even going to talk about caliper weight here.
- 2013 STI has the heavier 6-speed tranny
Another thing is that the 2011 WRX engine is fully broken in by now while the STI engine has not fully opened up yet with only 500 miles on the ODO.
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Old 07-15-2013, 06:04 PM   #10
Ryandc
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I thought the same thing. During break-in the car felt really slow if i got on it a little. Knowing other cars have limits set during breakin I hoped that's all it was. Now at 1500 mi it still acts the same. Coming from a stage 2 03 bugeye. My 2013 Sti feels crazy slow. On a stretch where I could hit 110-115 regularly I'm barely making it past 90. In between subies i had a mbz e500 amg , a bad decision i had to suffer with for a couple years, and at 5300 lbs with just slightly more power as the sti it could even get to the 100 mark on same stretch. In third and fourth it feels like I'm intermittently lifting off the throttle or having clutch slip. My Sti is stock except for spt cat back. I've been looking around to see if something is wrong with my car. Occasional backfire/afterfire on quick shifts. Rare pop on starting engine. Not smooth power delivery at all. And averaging 14-16mpg. It's hard to believe that the oem tuning on these cars can be that bad.... I am praying that a stage 2 accessport flash can cure this. It's a shame that a 40k$ car requires 1800$ in exhaust and tuning to drive like it should have come from the factory.
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Old 07-15-2013, 08:23 PM   #11
ill04STI
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No, Subaru does not restrict power during break in period !!
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Old 07-15-2013, 10:39 PM   #12
ericv
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Thanks for all of the input. I have had it in the S# mode for the above mentioned "test". I will have to do a data log soon then post...busy at work then kids at home. I am averaging about 18.3mpg on the highway in S#. I would think despite the facts above (heavier rims, rotors etc.) the extra 40HP & diffferent gearing would somewhat offset this.
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Old 07-16-2013, 12:09 AM   #13
ericv
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Also, only Mobil or Citgo Premium gas has been used. Just turned 675 miles today & finishing tank #3.

I turned off the traction control & VDC for the aforementioned "tests" as well to ensure it would put everything to the ground.
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Old 07-16-2013, 03:51 AM   #14
neg_matnik
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Quote:
Originally Posted by ericv View Post
Thanks for all of the input. I have had it in the S# mode for the above mentioned "test". I will have to do a data log soon then post...busy at work then kids at home. I am averaging about 18.3mpg on the highway in S#. I would think despite the facts above (heavier rims, rotors etc.) the extra 40HP & diffferent gearing would somewhat offset this.
You missed the part about WRX and STI making about the same amount of HP at the *wheels*. Check the COBB Tuning dyno database and you'll see that the 40HP difference is just not there (it only exists on Subaru's brochures). You'll have to get a tune if you'd like to wake your STI up.
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Old 07-16-2013, 09:34 AM   #15
Cathexis
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Quote:
Originally Posted by neg_matnik View Post

You missed the part about WRX and STI making about the same amount of HP at the *wheels*. Check the COBB Tuning dyno database and you'll see that the 40HP difference is just not there (it only exists on Subaru's brochures). You'll have to get a tune if you'd like to wake your STI up.
Agreed, it's night and day.
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Old 07-16-2013, 05:11 PM   #16
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Quote:
Originally Posted by ALOKIN View Post
The GRs make up a lot of ground when you add a new DP and tune. Going stage II really wakes the car up quite a bit.
^ Agreed!
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Old 07-16-2013, 07:24 PM   #17
jaxscuby
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emission standards has the factory tune eeking out mpg than hp.
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Old 07-16-2013, 11:22 PM   #18
ericv
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I am up to 820 miles...got home...stared at the accesport...stared some more...then installed it.

I tried the basic 93 oct stage 1 map & it felt good. I gave it a couple light runs up to 5k RPM 1st through 3rd gears. The boost was about 16.5psi on the accessport and the same on my gauge.

I came home then re-flashed again to 93 oct stage 1 HWG map. I gave it a couple light runs again up to 5k RPM 1st through 3rd gears. The accessport showed consistent 17.8psi & my gauge showed 18psi. The car has almost no lag starting at 2600rpm & feels greatly improved.

I will take it easy until break in period is done.
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