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#101 |
Scooby Newbie
Member#: 207743
Join Date: Apr 2009
Chapter/Region:
International
Vehicle:2006 Impreza-98 swap Silver |
![]() Hey guys,
I've got a 6S ECU on my MY98 STi Engine. I am staged 1 (Megan DP, JASMA Cat-back, Intake,BOV, VF28) Is my ECU tunable? can I custom re-map it? ECU Numbers: S6 22611 AD170 A18-000 D35 7212
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#102 |
Scooby Newbie
Member#: 284713
Join Date: Jun 2011
Chapter/Region:
W. Canada
Location: Sorrento, BC, Canada
Vehicle:many many Many |
![]() Hi guys (and gals),
New here... I find your site and conversations (those I've checked out) first rate. I look forward to many challenges and righteous convo when my time permits. My goal and sole purpose to this post is to help dispell some myths and clear up issues BEFORE it costs any of you great expense or a "final" bang :"( I have over 35 yrs as an auto driveability tech (specialize in electronic diagnosis and tuning). I began teaching this stuff when our team of instructors had to write courses and support books because the material for students (other mechanics) simply didn't exist (early 80's). I love this stuff! It is pure and simple physics, machines, and those servicing them, have to abide by the laws. Our machines and their methods of operation may change but the laws (physics) don't. Suck, squeeze, bang, blow... I recently helped a customer PROPERLY set up a Vi-PEC V44 to his 99 Mitsu 3000GT VR4. Both are amazing pieces of work. It was my first real look inside electronic engine management which allowed me to determine the results. I have wrenched/managed for many OE dealerships, reflashed hundreds of vehicles, to actually get a choice what mods to make calibration-wise WOW! I felt like I was back to rejetting carbs, curving distributors, and setting up juice ~ like a kid in a candy store with major deja vu. ANY mods to any OE's machine must be thoroughly researched before investing - its the only way to get great results. You would not believe the numbers of customers I've seen waste their money performing half a Mod. Like a bad knot, the mods often come undone. Failures can cost a hundred times more than doing the mod right to start with. Don't expect to install a new programmable ECU and drive away that afternoon. For every hour of tuning I put in about 3-4 hours of research. Accept the fact that mods changing emissions (in a testing state/area) are often unable to be corrected through tuning. Most car owners will run one version of their ride just for the smog test. Some swap entire exhaust, intake and engine management systems to get the pass. Here is the best advice I can offer: Find a good tuner, the more time they are willing to spend discussing your mods and helping you work within your budget (off the clock) the more successful the end result. A good shop/tech will have a following, ask around. Unless you have deep pockets, stick with proven mods. Leave the expensive R&D up to the pro's at the track (they usually have a fresh one in the crate to cover their mistakes before anyone notices). Perform mods wisely ~ if you make it go faster, make it stop/steer faster too. Unless you perform a full mod correctly, any gain in one area will sacrifice something else. Rules of the track baby. Cheers to all, keep those shiny sides up! Tim. |
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#103 |
Scooby Newbie
Member#: 284713
Join Date: Jun 2011
Chapter/Region:
W. Canada
Location: Sorrento, BC, Canada
Vehicle:many many Many |
![]() To quote DavidB...
I've got a 6S ECU on my MY98 STi Engine. I am staged 1 (Megan DP, JASMA Cat-back, Intake,BOV, VF28) Is my ECU tunable? can I custom re-map it? See below Last edited by autosmith; 06-05-2011 at 02:46 PM. Reason: clarification |
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#104 |
Scooby Newbie
Member#: 284713
Join Date: Jun 2011
Chapter/Region:
W. Canada
Location: Sorrento, BC, Canada
Vehicle:many many Many |
![]() OE's try to keep their systems (& black boxes) proprietary.
Although these ECU's often have a means of repflashing (EEPROM types) the ability is typically left to the OE dealerships (who can reflash updates & revisions to the software only). No changes or adjustments can be performed other than the odd factory option configurations. Some tekkies have/can determine protocols and hack systems (this changes the software checksum as has been mentioned here). Ease of use and the broad abilities to Map fuel, timing & output (eg.boost) controls have brought aftermarket user programmable ECUs into existance. Racing relies on them. Mods become far easier to see to completion. Research the mods (from their manufacturer and blogs like this one). If calibration tuning is a recommended part of the full mod, you know what to do. |
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#105 |
Scooby Newbie
Member#: 148041
Join Date: May 2007
Chapter/Region:
International
Location: Germany
Vehicle:2000 Rally Impreza Blue and Gold, baby |
![]() I have read a few threads about disabling codes in the ECU using romraider, however I have a 2000 RS and saw in a post that I can't use the program. What about the older Enginuity? Would using ECUexplorer allow me to disable codes, or just monitor my ecu? I am looking to disable misfire codes. Also, do you know of a list of what codes trigger limp-home mode? Any help would be greatly appreciated! If there is no solution in opensource, what aftermarket path do I need to take!? There has to be some way of doing this.
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#106 |
Scooby Newbie
Member#: 292411
Join Date: Aug 2011
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![]() hey i recently bought a 1992 SVX, i dont know cars that well, i didnt check the car well enough, caused me spent over $4000 finding out that i need a new ECU, do u know anyone can help me find 1 for this car? or do u know anyone can rebuild it? im disparate, please help me!! thank you!!
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#107 |
Scooby Newbie
Member#: 289809
Join Date: Jul 2011
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![]() thanks
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#108 |
Scooby Newbie
Member#: 142675
Join Date: Mar 2007
Location: Colorado
Vehicle:2006 FXT Blue |
![]() I am doing a JDM EJ20G swap into my beetle and this was a big help. The subaru wiring is a mess not to mention finding a complete bulk head harness from a JDM 96 WRX is pretty much impossible.
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#109 |
Scooby Newbie
Member#: 316972
Join Date: Apr 2012
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![]() Very helpful information, but I have heard other info as well. My plan is to get a turbo back exhaust and a cold air intake to start off, then find a tuner to help me with all of it, then work up from there. I just recently bought a used 08' WRX, what do you think?
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#110 |
Scooby Newbie
Member#: 321615
Join Date: May 2012
Chapter/Region:
TXIC
Location: DFW
Vehicle:2018 WRX STI Black |
![]() I have a 2005 WRX, Cobb access port, nothing more...yet. Well not that affects this particular thread anyway. I am thinking about getting the Cobb catted downpipe with the Borla Hush twin tipped cat back. Aside from the Cobb map not being exact, anybody have any thoughts on it? Would it ruin the whole object because the muffler isn't high flow (assumption because it is quieter then the Cobb one)? I am most worried about efficiency and not destroying my engine...power is third on that list, but I know it will be a welcome side effect
![]() In case anybody is wondering, I plan on getting cold air intake then getting a custom tune as soon as funds allow. |
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#111 | |
Scooby Specialist
Member#: 260314
Join Date: Oct 2010
Chapter/Region:
NESIC
Location: S central CT, New England
Vehicle:2007 STI silver gray metallic |
![]() Quote:
Short answer is: you will get a little more power but gas mileage (efficiency), will really suffer. You won't particularly be hurting the engine but will be throwing money down the down the exhaust in the form of unburned gas. |
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#112 |
Scooby Newbie
Member#: 321615
Join Date: May 2012
Chapter/Region:
TXIC
Location: DFW
Vehicle:2018 WRX STI Black |
![]() Yeah I kinda figured but I can't find the topic of exhaust, and it wouldn't let me start a new thread. Where am I supposed to post this question?
Edit: Sorry I found where to post it. Thanks for the heads up though. Last edited by scoobie_noobie; 06-08-2012 at 12:50 PM. |
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#113 |
Scooby Newbie
Member#: 328316
Join Date: Aug 2012
Chapter/Region:
Tri-State
Location: Horsham, PA
Vehicle:1999 Impreza L |
![]() phew, glad i got an 03 instead of an 04. Thanks Ron!
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#114 |
Scooby Newbie
Member#: 320203
Join Date: May 2012
Vehicle:2015 Impreza wrx STI Galaxy Blue Pearl |
![]() A lot of great information in this post
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#115 |
Scooby Newbie
Member#: 316071
Join Date: Apr 2012
Chapter/Region:
MWSOC
Location: Detroit, MI
Vehicle:17 Forester XT DGM |
![]() Great thread! I have a question about the stock tune on newer WRXs (04+). Ive seen in other threads and this one stating the stock tune is not the greatest and can cause the engine to run lean, leading to other more serious issues.
As said in this post, the problem really arises when aftermarket parts are added such as intake and exhaust. I have a stock 09 and have begun to somewhat worry that I need to invest in some sort of engine management simply as a means of preventing serious engine issues. (i.e-cobb AP stage 1) Clarification on this would be greatly appreciated |
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#116 |
Scooby Newbie
Member#: 320203
Join Date: May 2012
Vehicle:2015 Impreza wrx STI Galaxy Blue Pearl |
![]() Great write up
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#117 |
Scooby Newbie
Member#: 349589
Join Date: Mar 2013
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![]() This helped a lot. Thanks
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#118 |
Scooby Newbie
Member#: 275055
Join Date: Feb 2011
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![]() Thank you so much for this information!
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#119 |
Scooby Newbie
Member#: 57459
Join Date: Mar 2004
Chapter/Region:
SCIC
Location: Santa Maria, Ca
Vehicle:2001 2.5RSTi Blue Ridge Pearl |
![]() Great tuning thread!
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#120 |
Scooby Newbie
Member#: 367234
Join Date: Sep 2013
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![]() Thanks for all the awesome information. I am new to the wrx world as well as this forum. I just bought a 2013 Subaru WRX and can't wait to start with mods. This was a very good read that has given good insight on future mods. I look forward to reading more of these awesome threads!
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#121 |
Scooby Newbie
Member#: 368044
Join Date: Sep 2013
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![]() Dear all,
I have just purchased a wrx turbo(2005) 330 BHP with an aftermarket ecu simtec. My concern is that here in Malta our fuel octane is too low 87 and we don't have the 95 octane. My question is does simtec ecu offers learning mode to change timing settings according to our low octane. Would you recommend re tune ecu with low octane to avoid issues? Thanks all for your help ![]() |
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#122 |
Scooby Newbie
Member#: 368717
Join Date: Sep 2013
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![]() rdfff fsef wwad wdad
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#123 |
Scooby Newbie
Member#: 368717
Join Date: Sep 2013
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![]() desf fsef ffse fdf sdf
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#124 |
Scooby Newbie
Member#: 374669
Join Date: Nov 2013
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![]() Hi guys,
If I wana learn how to tune my car myself, how can I start, any guidance documentation? |
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#125 |
Scooby Specialist
Member#: 260314
Join Date: Oct 2010
Chapter/Region:
NESIC
Location: S central CT, New England
Vehicle:2007 STI silver gray metallic |
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