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01-08-2013, 07:30 PM | #1 |
Scooby Newbie
Member#: 262051
Join Date: Oct 2010
Location: Hood River, Oregon
Vehicle:08 STI red |
help, STI wont rev over 3,000 rpm
I have an 08 Red STI that I bought with roughly 60,000 miles on it at the end of september. I found it at a dealer in Bend, OR, of course they didn't know any thing about the car. To make a long story short......The car is most definitely not stock. I don't think the dealer even knew that. From visual inspection and driving it, without pulling the car apart, I can see that it has an AEM intake, Turbo-back exhaust, no cat, and a racing clutch. Check engine light keeps coming on for emission code, obvious reason. So I bought an accessPort for obvious reason as well, and supposedly, per COBBtuning, I have the correct map for the car and I cant get the engine to rev over 3000 RPM's. All 4 cylinder misfire code are coming up. Before I got the accessPort the car was running great. They say its a mechanical error, so we cleaned the intake, and we are replacing the spark plugs, but I think theres more to this.........maybe the fuel injectors are not stock, or well, it could be anything. The car doesn't run right on any of the maps that are loaded on to the accessPort. I was thinking that a custom map was installed on the ECU, but I don't know...... Does any one have an idea of what to do, or has ran into this issue? The car was first bought in Washington state in the Poulsbo/Bremerton area, then was serviced at Briggsauto.com in manhattan, KS, then back to washington......sounds like a millitary guy.....I just need to know who tuned this car so we can keep troubleshooting. This might be a long shot to find out here on NASIOC but i figured it wouldn't hurt. The body is all stock so its a 08 red STI wagon and has tinted windows.
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01-08-2013, 08:27 PM | #2 |
Scooby Specialist
Member#: 258628
Join Date: Sep 2010
Chapter/Region:
Tri-State
Location: PA
Vehicle:2009 WRX stg2-SOLD 2012 MS3 |
All I have to say is under NO CIRCUMSTANCES you should have bought this car. It was severely abused and has probably developed some serious mechanical issues and was traded in because of those. Also, if the car was already flashed when you bought it, you would not have been able to install your AP on it. Ecutek locks the ECU and so does the AP (if the previous owner had one).
I won't even ask why you bought it because it will make no sense. Very bad decision. |
01-08-2013, 08:33 PM | #3 |
Scooby Newbie
Member#: 233261
Join Date: Dec 2009
Location: Herndon, VA, USA
Vehicle:2005 Outback XT Silver |
I'm surprised the dealer sold it, missing emissions equipment.
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01-08-2013, 09:24 PM | #4 |
Scooby Specialist
Member#: 330625
Join Date: Aug 2012
Chapter/Region:
NESIC
Location: MA
Vehicle:2006 WRX WRB |
It could have been open source tuned. Compression test it, if its ok, pay someone to tune it or learn to tune yourself. If you can get a stock intake that'll make everything much easier.
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01-08-2013, 10:15 PM | #5 |
Scooby Newbie
Member#: 262051
Join Date: Oct 2010
Location: Hood River, Oregon
Vehicle:08 STI red |
I have not done a compression test yet, I'll try that, thanks for the advice Leafy.
Im sure it will come down to me getting it professional tuned, but just trying to figure out the problem my self. |
01-08-2013, 09:58 PM | #6 |
Scooby Newbie
Member#: 337037
Join Date: Nov 2012
Location: CA
Vehicle:03 wrx black |
im no expert but id try and find a tuner around you and see if you can get a trailer, trailer it there and have'em look at it.
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01-08-2013, 10:11 PM | #7 |
Scooby Newbie
Member#: 316780
Join Date: Apr 2012
Chapter/Region:
MAIC
Location: Parkersburg, WV
Vehicle:2003 Impreza WRX Silver |
In some states/cases it is illegal for a dealer to sell a vehicle without proper function equipment for emissions standards. <this equals a huge fine from the Govt.
As far as your car, I am sorry, but compression test and take it the nearest shop near you to get it looked at and get a tune if things aren't already shot, pray your not sol. Good Luck and hope it works out okay. |
01-08-2013, 10:20 PM | #8 |
Scooby Newbie
Member#: 337037
Join Date: Nov 2012
Location: CA
Vehicle:03 wrx black |
kinda sounds like its in some sort of safety mode, you never know. the guy before you could of had it tuned and the tuner could have changed a setting that shouldnt have been touched and now its doing what your experiencing.
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01-08-2013, 10:29 PM | #9 |
Scooby Specialist
Member#: 321409
Join Date: May 2012
Chapter/Region:
SWIC
Location: Arrey, NM
Vehicle:2003 Big Effing Van 7.3L powerstroke diesel |
Sounds like a limp mode. Was it giving a c.e.l before you installed the AP? If not When you married your AP it should have saved the tune that was on the ecu at the time. Could you reflash to that tune or unmarry the AP to put it back on there?
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01-09-2013, 01:30 AM | #10 |
Scooby Newbie
Member#: 281982
Join Date: May 2011
Chapter/Region:
NWIC
Location: Beaverton, Oregon
Vehicle:1998 Toyota Supra |
Do 08s have a valet key and is it possible that you are using one? Although the misfires are troubling, valet keys don't let the car rev higher than 3000rpm I believe.
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01-09-2013, 01:55 AM | #11 |
Scooby Newbie
Member#: 181331
Join Date: Jun 2008
Chapter/Region:
VIC
Location: Langley, BC
Vehicle:2012 STI Black |
Not true. Valet keys only prevent access to the glove box. Using the valet key in the ignition will not affect performance at all.
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01-09-2013, 08:58 AM | #12 |
Scooby Newbie
Member#: 262684
Join Date: Nov 2010
Chapter/Region:
NESIC
Location: Andover, MA
Vehicle:2019 WRX Premium ISM |
it probably had a custom map on before you switched to the AP. furthermore you neglected to read the clearly stated instructions for the AP maps- STOCK INTAKE REQUIRED. unmarry it and see if the misses go away. compression test never hurts. since it's all 4 cyl misfire its probably air or fuel related
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01-09-2013, 01:14 PM | #13 | |
Scooby Newbie
Member#: 262051
Join Date: Oct 2010
Location: Hood River, Oregon
Vehicle:08 STI red |
Quote:
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01-09-2013, 02:31 PM | #14 |
Scooby Newbie
Member#: 262684
Join Date: Nov 2010
Chapter/Region:
NESIC
Location: Andover, MA
Vehicle:2019 WRX Premium ISM |
I should've said, OTS maps are stick intake. either way, revert to old map and see if misses go away
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01-09-2013, 03:59 PM | #15 | |
Scooby Specialist
Member#: 129681
Join Date: Oct 2006
Chapter/Region:
MAIC
Vehicle:2024 Crosstrek Ltd Ice Silver Metallic |
Quote:
OP, you have verified that the rev limiter isn't involved? Also that the MAF sensor isn't in "backwards?" Happens. Does it idle OK? You're right about suspecting the injectors. When replacing your plugs they will give a clue. Lots of cars from that area of the US use E85, thus big injectors. If it ran OK when you got it someone had put an OS tune on it and no Cobb OTS map will work. If the plugs are black that would be a clue. Is there any indication the injectors have been replaced? Like missing brackets, etc? IF they are big injectors you can still use Cobb maps... you'll just have to set up the injectors with ATR. Logs would be good. |
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01-09-2013, 04:00 PM | #16 |
Scooby Specialist
Member#: 276209
Join Date: Mar 2011
Chapter/Region:
MWSOC
Location: Windy City
Vehicle:I am Rub Function>Form |
You need to get an tune for the parts you have on there. Since you already know your car is littered with aftermarket parts (to what extent you don't even know), why would you even waste your time with some OTS map when it's pretty likely you aren't meeting those map parameters for which modifications are acceptable?
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01-10-2013, 01:04 PM | #17 |
Scooby Newbie
Member#: 267793
Join Date: Dec 2010
Chapter/Region:
MWSOC
Location: St Charles IL
Vehicle:2007 WRX 320HP/320TQ CGM |
It probably doesn't rev over 3k because previous owner built it and raced a lot and its from a rev limiter or launch control of some sort. Still shocked a dealer sold you that kinda car! Good luck bud
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01-21-2013, 08:57 PM | #18 |
Scooby Newbie
Member#: 262051
Join Date: Oct 2010
Location: Hood River, Oregon
Vehicle:08 STI red |
It was the fuel injectors.........
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