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11-21-2020, 09:18 AM | #1 |
Scooby Newbie
Member#: 517478
Join Date: Aug 2020
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Not impressed with cobb stage 2+ map (03 wrx)
I have all the supporting mods cobb has said I needed to run the stage 2 map on my 03 wrx. I flashed to stage 2+ebcs 93 octane a few weeks ago. I baby my car all the time and have put maybe 200 miles on the car since going stage 2. I finally floored it to redline in 2nd and 3rd gear merging onto the interstate and wasn’t impressed. My question is, is babying my car (never more that 1/2 throttle and not going over 4K rpm) making my car run slower and not learning the tune fully? Do I need to get on it more often for my computer to learn the tune and adjust to get its full potential?
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Last edited by Bcpierce86; 11-21-2020 at 10:01 AM. |
11-21-2020, 09:33 AM | #2 |
Scooby Newbie
Member#: 481754
Join Date: Feb 2018
Location: Beaufort, SC
Vehicle:2017 STi Base Black |
If you have an STi did you have it in Sport Sharp? How much boost are you seeing?
Its been a while since I went stage 2 but I remember it being fairly noticeable increase in power. IIRC I was hitting around 18psi in sport sharp (STi). Things like crappy fuel can also be holding you back. If not already, you should be watching DAM, feedback knock and fine knock learning. To kind of answer your question though. Personally when I went stage 2 (and again at stage 3) I drove it to operating temp and pushed it a little (12-15 psi), parked to check everything over and then went for a few wot pulls. I remember going stock to Cobb 2 being more noticeable then going stage 2 to stage 3, but that was expected. Last edited by Zak6182; 11-21-2020 at 09:40 AM. |
11-21-2020, 09:40 AM | #3 |
Scooby Newbie
Member#: 517478
Join Date: Aug 2020
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I’m sorry. I forgot to post it’s a 03 wrx.
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11-21-2020, 11:16 AM | #4 |
Scooby Specialist
Member#: 395793
Join Date: Jul 2014
Chapter/Region:
Tri-State
Location: SLC and Lake Placid
Vehicle:2005 92x Aero Beige |
Have you done all necessary maintenance items such as:
-Replacing all vacuum lines -Replace turbo inlet -Replace or at least clean the MAF -Replace air filter -Replace spark plugs and make sure they are gapped properly -Check for exhaust leaks pre-turbo -check for intake/TMIC hose leaks You have an 03, it's old and will need all of these things done. If it's a high mileage engine and compression is on the lower end of acceptable than you may not feel as much difference as you had hoped. Without knowing what kind of maintenance has been done it could be any number of things. If all of the mentioned maintenance has been done, it wouldn't hurt to have a compression and leak down test done just verify the health of your engine. As for the ECU itself, yes it does take time to adjust to your driving habits. It's good to be aggressive with the throttle a few times a week to keep the ECU in a learned condition. Honestly it's also healthy for the engine in general. Obviously, beating on it relentlessly is bad, but taking it to within 200-300 from redline a few times a week is healthy for performance engines. |
11-21-2020, 12:34 PM | #5 |
Scooby Specialist
Member#: 492327
Join Date: Oct 2018
Location: A car lounge in the midwest
Vehicle:19 WRX 16 STI 17Mk7R 20Supra 20Forester |
I had a modded 02 WRX long time ago (new) with U-Tech (it was a piggyback). The car's weakness is the gearing. You really have to launch the car from a standstill potentially shattering your glass tranny to squeeze out any level of real acceleration. The car sucked at rolling starts and pulls from 2 or 3rd.
It was fast for its time but that was near 20yrs ago. |
11-21-2020, 01:27 PM | #6 | |
Scooby Newbie
Member#: 517478
Join Date: Aug 2020
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Quote:
I boost leak tested it to 20psi and the only leak (if it’s even a leak) I hear comes from the turbo compressor housing itself but I cannot find a leak, no bubbles with soapy water. Current mods are Cobb sf intake, cobb 3 port ebcs, stock fuel system. Unknown name unmarried downpipe, bpm exhaust from there back. Mitsumoto intercooler hoses. Cobb AP v3. Stock headers and stock uppipe. just logged a 3rd gear pull. I just have to figure out how to post the log |
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11-21-2020, 04:06 PM | #7 |
Scooby Newbie
Member#: 463763
Join Date: Feb 2017
Chapter/Region:
NWIC
Location: Whidbey Island, WA
Vehicle:2002 WRX Sedan |
My '02 is a stage 2+ with a K&N filter in stock housing, Cobb catted up and down pipes, Cobb 3 port ebcs, and Invidia Q300 exhaust. It's a noticeable difference from stock and pulls great in 2nd and 3rd when rolling. I rarely launch fast in first, but when I do it's very quick. Couldn't be happier with it so far as DD tune. Not sure what to tell you other than double check everything that could possibly be suspect. Sounds like you bought the car this way, or did you do the upgrade?
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11-24-2020, 07:57 PM | #8 | |
Scooby Newbie
Member#: 517478
Join Date: Aug 2020
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Quote:
I bought the car with the turbo back exhaust. And then I was told I needed the stage 2 tune for it to run right, so I bought a AP v3 and flashed to stage 2 right away. The car was acting up bad like shuddering and wouldn’t rev over 3. I thought it was a boost least so I tested it and then just bought the intercooler pipeing to see if that would fix it. No go, so I bought the intake because it had an injen cai and I thought that would be the problem. Long story short... dirty maf. It was running strong and felt faster before I got the AP and flashed it to stage 2. Car didn’t act up from the dirty maf until after the stage 2 map was flashed. |
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11-24-2020, 09:37 PM | #9 |
Scooby Specialist
Member#: 395793
Join Date: Jul 2014
Chapter/Region:
Tri-State
Location: SLC and Lake Placid
Vehicle:2005 92x Aero Beige |
As you add mods to your car the ECU becomes more sensitive. Just part of the process
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11-24-2020, 11:54 PM | #10 | |
Scooby Specialist
Member#: 125887
Join Date: Sep 2006
Chapter/Region:
NWIC
Location: Southern Oregon
Vehicle:2001 EJ207 V7 RSTi, Mica Blue |
Quote:
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11-25-2020, 10:56 AM | #11 |
Scooby Specialist
Member#: 189077
Join Date: Sep 2008
Chapter/Region:
NESIC
Location: Connecticut
Vehicle:2011 STI limited WRB |
take note of when the OP was edited, and the post immediately after the one you are calling attention to.
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11-25-2020, 12:44 PM | #12 |
Scooby Specialist
Member#: 125887
Join Date: Sep 2006
Chapter/Region:
NWIC
Location: Southern Oregon
Vehicle:2001 EJ207 V7 RSTi, Mica Blue |
Noted... But at the same time both were edited on the same day, irrelevant... Regardless still need to know what the car is doing from a computer/mechanical standpoint... Give us more info
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11-25-2020, 03:00 PM | #13 | |
Scooby Guru
Member#: 428511
Join Date: Aug 2015
Location: philadelphia
Vehicle:2016 STI |
Quote:
My experience is that Yes, the tune starts off conservative and it takes quite a while to "learn" up to full potential, and Yes you do need to get on it hard a bunch of times in a few conditions to get that. I actually just flashed mine from 91 octane to 93 just the other week and the 93 tune felt worse at first and it took a solid week or two before it came up to power. Now it is slightly better than the 91, which is kind of what I expected. But think about it, the ECU can't really learn its way to max power if you don't give it full load conditions otherwise it wouldn't be learning, it would just be like an old school mechanical setup where it comes right out of the box tuned at it's max, defeating the whole purpose of ECU learning. |
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11-25-2020, 04:24 PM | #14 | |
Scooby Specialist
Member#: 267339
Join Date: Dec 2010
Chapter/Region:
BAIC
Location: Ostinato Rigore
Vehicle:2002 0[[XXXXoXXXX]]0 MBP LongRoof |
Quote:
Does the UP have a fat section up top and a wire coming out of it and going to a 3 or 4 wire engine harness on the passgr sidewall near the strut tower? If yes, remove that bastard ASAP. |
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11-25-2020, 07:03 PM | #15 |
Big Ron
Super Moderator Member#: 18062
Join Date: Apr 2002
Chapter/Region:
MAIC
Location: I can save you a ton of cash
Vehicle:on car parts so PM me b4 j00 buy |
You have not replaced your OEM Boost Control Solenoid. Do so with an OEM from Subaru unit.
You have not replaced your OEM Mass Air Flow Sensor. Do so with an OEM from Subaru unit or a legit Denso unit, not some knock off for $39.95 from ebay. If you have not done these two things, you will never see the full power from the tune. There could be other issues, but these are paramount. |
11-25-2020, 11:42 PM | #16 | |
Scooby Specialist
Member#: 48377
Join Date: Nov 2003
Chapter/Region:
MWSOC
Location: "They eat fish soaked in lye"
Vehicle:1996 Gutted, built XP class Impreza L |
Quote:
Edit- another possible item that may need replacing is the coil packs, they do go bad eventually. If you are running on 3 cylinders the power will be a lot down. |
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11-26-2020, 11:39 AM | #17 |
Scooby Specialist
Member#: 177235
Join Date: Apr 2008
Chapter/Region:
NWIC
Location: Washington
Vehicle:2016 Focus RS 2002 WRX Wagon |
Theres mine for reference. Cobb Stage 2 off the shelf tune. Dont know if that helps but I went out and took that just for you. Last edited by samb; 11-26-2020 at 11:47 AM. |
12-01-2020, 07:15 AM | #18 |
Scooby Newbie
Member#: 517478
Join Date: Aug 2020
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Yeah I’m looking to get a new up pipe. Only other gauge I have other than the apv3 is an AEM wideband hooked up right after the turbo on the downpipe. I have a brand new cobb 3 port ebcs. Cleaned maf, looks brand new and seems to be running correctly. I do notice bucking when at around 2k rpm just starting to get going. I have a buddy willing to sell me a vf48 and sti injectors and new 255 fuel pump. Is this turbo too big for the 2.0? And what kind of lag am I going to get?
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12-01-2020, 07:16 AM | #19 | |
Scooby Newbie
Member#: 517478
Join Date: Aug 2020
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Quote:
I’ll get out and do a pull and video it to post and see if there’s a difference |
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12-01-2020, 07:19 AM | #20 | |
Scooby Newbie
Member#: 517478
Join Date: Aug 2020
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Quote:
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12-01-2020, 07:48 AM | #21 | |
Scooby Newbie
Member#: 517478
Join Date: Aug 2020
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Quote:
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12-01-2020, 08:03 AM | #22 |
Scooby Specialist
Member#: 395793
Join Date: Jul 2014
Chapter/Region:
Tri-State
Location: SLC and Lake Placid
Vehicle:2005 92x Aero Beige |
The VF48 is a fun turbo for the EJ20. However, you should have the health of the engine diagnosed before you start adding power. Compression and leak down test at a minimum. I personally like to get a few pulls on the dyno to make sure everything is doing what it should. It also gives your tuner a chance to check everything over and let you know what kind of power it's making currently as well as if he sees anything abnormal you should be concerned with.
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12-01-2020, 08:20 AM | #23 | |
Scooby Newbie
Member#: 517478
Join Date: Aug 2020
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Quote:
I live in northeast Pa and I’m looking for an e tunner for my car. The closest dyno is about 4-5 hours away and I don’t really like to be at new places cause of this covid ****. Do you or anyone know of a tuner that will E tune my car? Everyone seem to only do newer models. |
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12-01-2020, 10:05 AM | #24 |
Scooby Specialist
Member#: 125887
Join Date: Sep 2006
Chapter/Region:
NWIC
Location: Southern Oregon
Vehicle:2001 EJ207 V7 RSTi, Mica Blue |
Tons of E tuners still out there just need to search for them and have the tactrix, laptop, and know how to do it properly
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12-01-2020, 11:03 AM | #25 |
Scooby Specialist
Member#: 395793
Join Date: Jul 2014
Chapter/Region:
Tri-State
Location: SLC and Lake Placid
Vehicle:2005 92x Aero Beige |
Stephen at iA Tuning is highly regarded for E tuning. There's also Ray at Turbo Tek.
http://www.turbotektuning.com He's in the Philly area. He was a tuner near where I grew up in NY and I know several people who used him back then and had nothing but great things to say. |
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