|
|
|
|
Thread Tools | Display Modes |
10-28-2008, 02:46 PM | #1 |
Scooby Specialist
Member#: 174442
Join Date: Mar 2008
Chapter/Region:
Tri-State
Location: NNJ
Vehicle:2007 SuperWagon I don't spell well |
A Complete Tuning Guide
Current Revision = 1.0
Available at https://sites.google.com/site/asubienewbietuningguide/ Also Check out thesuicidaleggroll's turbo calculator. Will help you set realistic goals for your car. http://www.thesuicidaleggroll.com/ho..._calc_v3.0.xls And if you don't know what the input variables mean, you should probably do some more reading before you start tuning. It's a good test. If you're having trouble viewing, try it in firefox and ie. It's a google sight and I personally never had any problems with it but others have. Might be from using other browsers. If it doesn't work on major browsers, we'll figure out another host somewhere. Also, if your work filters block google docs (as mine do) you can't click the "view" button. You have to download the document. Without inspecting the new Lowe's Weekly Ad deals, one cannot expect the best price. UPDATE 10/1/2010: Rewrote some of the wastegate part and cleaned up some wording here and there. UPDATE 08/12/2009: Just added the references as Tea Cups requested. Info stayed basically the same. UPDATE 03/31/09: Version 0.5 includes Corrections made as suggested by Tea Cups UPDATE 03/26/09: a .doc version of this guide. First version .doc version was 0.3 thanks to WideBoy, we now have a great .doc version of this guide. I've been working with him for the last couple of weeks to get it done. We did a great job revising the info here and I would say the .doc verison is superior to these posts. We worked on clearing up things that may seem confusing as well as added some info + revised some tuning techniques to be more clear. -BN
* Registered users of the site do not see these ads.
Last edited by Bad Noodle; 05-06-2011 at 07:58 AM. |
10-28-2008, 02:46 PM | #2 |
Scooby Specialist
Member#: 174442
Join Date: Mar 2008
Chapter/Region:
Tri-State
Location: NNJ
Vehicle:2007 SuperWagon I don't spell well |
Info removed, too out of date. Read current .doc or .pdf file instead.
Last edited by Bad Noodle; 08-12-2009 at 03:38 PM. |
10-28-2008, 02:46 PM | #3 |
Scooby Specialist
Member#: 174442
Join Date: Mar 2008
Chapter/Region:
Tri-State
Location: NNJ
Vehicle:2007 SuperWagon I don't spell well |
Info removed, too out of date. Read current .doc or .pdf file instead.
Last edited by Bad Noodle; 08-12-2009 at 03:38 PM. |
10-28-2008, 02:47 PM | #4 |
Scooby Specialist
Member#: 174442
Join Date: Mar 2008
Chapter/Region:
Tri-State
Location: NNJ
Vehicle:2007 SuperWagon I don't spell well |
Info removed, too out of date. Read current .doc or .pdf file instead.
Last edited by Bad Noodle; 08-12-2009 at 03:38 PM. |
10-28-2008, 02:47 PM | #5 |
Scooby Specialist
Member#: 174442
Join Date: Mar 2008
Chapter/Region:
Tri-State
Location: NNJ
Vehicle:2007 SuperWagon I don't spell well |
Info removed, too out of date. Read current .doc or .pdf file instead.
Last edited by Bad Noodle; 08-12-2009 at 03:38 PM. |
10-28-2008, 02:48 PM | #6 |
Scooby Specialist
Member#: 174442
Join Date: Mar 2008
Chapter/Region:
Tri-State
Location: NNJ
Vehicle:2007 SuperWagon I don't spell well |
Info removed, too out of date. Read current .doc or .pdf file instead.
Last edited by Bad Noodle; 08-12-2009 at 03:39 PM. |
10-28-2008, 03:18 PM | #7 |
Scooby Specialist
Member#: 174442
Join Date: Mar 2008
Chapter/Region:
Tri-State
Location: NNJ
Vehicle:2007 SuperWagon I don't spell well |
Advice Column:
It's easier to post feedback here since each post can only have 15000 characters and just withing limitations on every post. From robbieshonda: Help with your turbo dynamics burst and continuous tables. Alot of people get a rapid wastegate flutter. This is a semi legable way to fix this problem. If your target boost tables is 18 psi for a given cell, and you over shoot that your ecu will pull boost by a given amount in the table. If your car is underboost targets and no knock ect the ecu will add wgdc's to hit the target boost. You should try taking both of those tables Burst and continuous, and Multiply both by .50 which will cut the table in half. This will generally help get rid of the rapid over boost under boost wg flutter. vf series guys this can also help you aswell. yours is like mine, mainly just a weak spring but this will help smooth it out. Hope this helps Great write up. Robbie Cobb Protuner. --------------------------------------------------------- From williaty: One thing I will touch on, though, is your section on AFRs. Stoich is not ideal for anything other than emissions. Stoich produces the lowest sum of hydrocarbons and oxides of nitrous. It's not the best for fuel economy (leaner than stoich is) and it's not the best for power (richer than stoich is). The reason that richer than stoich is best for power is that, due to real-world imperfections in charge mixture, running an engine at stoich results in both excess oxygen and fuel in the exhaust stream. This is due to some of the oxygen and some of the fuel not being able to find each other in the combustion chamber. Oxygen is the thing it's hard to get into an engine so we want to be damned sure that we burn every last one of the buggers. To ensure this, we add extra fuel to make sure that none of the oxygen escapes alive. For "normal" engines, this results in Mean Best Torque being somewhere in the ballpark of 13 to 13.5 AFR. Now, many engines, especially forced-induction engines, will have problems with knock at that AFR. By further enriching the mixture, the efficiency of the combustion can be reduced to the point that knock is easier to control. Make sure you read that carefully, though. The increased resistance to knock is a result of reduced efficiency. So over-enrichment (richer than 12.5 or so) costs both fuel efficiency and power. However, it allows for higher boost and/or more timing. It's a trade off and different tuners will prioritize different aspects of that trade off. In the end, most theories on that compromise will end up making roughly the same power, just in different ways. ---------------------------------------------------------------------------------------------------- Last edited by Bad Noodle; 10-29-2008 at 06:52 AM. |
10-28-2008, 03:24 PM | #8 |
Scooby Specialist
Member#: 174442
Join Date: Mar 2008
Chapter/Region:
Tri-State
Location: NNJ
Vehicle:2007 SuperWagon I don't spell well |
Alright, most of the info is up. I'll have to take some time (a day or 2) formatting it since the formatting changed when I moved it from google docs to here. But read it and feel free to comment. If you think i'm wrong about something let me know. The idea is to have a good resource for new tuners.
|
10-28-2008, 03:56 PM | #9 |
Scooby Specialist
Member#: 86995
Join Date: May 2005
Location: Pittsburgh, PA
Vehicle:2005 Tacoma |
Great writeup! Thanks!
|
10-28-2008, 04:30 PM | #10 |
Scooby Specialist
Member#: 132130
Join Date: Nov 2006
Chapter/Region:
TXIC
Location: Austin, Texas
Vehicle:2002 Ford F-150 Graphite Gray |
awesome!! cant wait to read it more thoroughly!!
|
10-28-2008, 06:20 PM | #11 |
Scooby Newbie
Member#: 172332
Join Date: Feb 2008
Location: St Paul, MN
Vehicle:2006 WRX |
Wow, way to go at pulling a lot of info together into one post! This thing needs a sticky so I can point people at it. The "basic theory" of tuning is really quite simple, but you did a good job outlining how tuning a Subaru can be confusing for those un-initiated to the Subaru ECU. I urge anyone (even those just logging and playing with some OTS maps) to read through this thing. Twice.
Good job Bad Noodle. |
10-28-2008, 07:13 PM | #12 |
Scooby Specialist
Member#: 180842
Join Date: May 2008
Chapter/Region:
MWSOC
Location: Missouri
Vehicle:2008 WRX STi WRB |
great write-up. i have been looking into the OS tune for a little now. i already had the RoMRaider program as well as ECUFlash just need a WB O2, Tactrix cable, and boost gauge to get started. thanks again for the info
|
10-28-2008, 07:17 PM | #13 |
Scooby Specialist
Member#: 71682
Join Date: Oct 2004
Chapter/Region:
SCIC
Location: Socal with BORICUA blood...
Vehicle:2007 WRX Sti LTD. SWP |
Great stuff!!!!!!
|
10-28-2008, 07:51 PM | #14 |
Scooby Newbie
Member#: 115104
Join Date: May 2006
Chapter/Region:
MAIC
Location: Ohio
Vehicle:2003 WRX Sedona Red Pearl |
Great write up man, it actually answered a couple of questions I was going to ask in the future about this subject. Thanks you sir.
|
10-28-2008, 09:36 PM | #15 |
Scooby Newbie
Member#: 51476
Join Date: Dec 2003
Chapter/Region:
E. Canada
Location: Toronto, ON
Vehicle:2005 Forester XT 2018 BMW M2 |
What an excellent write-up; thanks BN.
|
10-28-2008, 10:23 PM | #16 |
Scooby Specialist
Member#: 44256
Join Date: Sep 2003
Chapter/Region:
Tri-State
Location: Long Island, NY
Vehicle:05 outback xt 02 wrx wagon - crushed :( |
Glad someone finally put something like this together for the new tuners... While the info is out there, its hard to find and dig through... Took me a long time to find/learn all this stuff on my own... For those just starting to tune, take it SLOW and read a LOT...
|
10-28-2008, 10:30 PM | #17 |
Scooby Specialist
Member#: 44256
Join Date: Sep 2003
Chapter/Region:
Tri-State
Location: Long Island, NY
Vehicle:05 outback xt 02 wrx wagon - crushed :( |
Want to say great job again, but suggest a few things...
ask mickeyd2005 on romraider if you can copy/paste his maf scaling thread from romraider into your "maf" area... add "the learning view" tool to the list of "what you need" and, add merchgod's "explained" threads from ecu analysis on romraider to your links... |
10-28-2008, 11:00 PM | #18 |
Scooby Newbie
Member#: 116554
Join Date: Jun 2006
Chapter/Region:
South East
Location: My brewery
Vehicle:06 founding member of Tom Banks Hanks |
thank you for this. Its nice to have it in 1 post
|
10-28-2008, 11:04 PM | #19 |
Scooby Newbie
Member#: 176661
Join Date: Apr 2008
Chapter/Region:
E. Canada
Location: Mississauga,ON
Vehicle:2002 WRX Black |
I've got my new favorite thread! This needs to be a sticky!
|
10-28-2008, 11:15 PM | #20 |
Scooby Specialist
Member#: 122306
Join Date: Aug 2006
Chapter/Region:
MWSOC
Location: On the Dyno OH
Vehicle:2002 Sti PTE 6262 Interlagos Blue 610/580 |
Very Nice write up. Sent you a pm.
|
10-29-2008, 01:01 AM | #21 |
Scooby Guru
Member#: 71092
Join Date: Sep 2004
Chapter/Region:
MWSOC
Location: Licking County, Ohio
Vehicle:2005 2.5RS Wagon Regal Blue Pearl |
You should post a this on RomRaider's forum as well for peer review. You got a couple of details wrong but those guys would do a MUCH better job of explaining all of it that I can.
One thing I will touch on, though, is your section on AFRs. Stoich is not ideal for anything other than emissions. Stoich produces the lowest sum of hydrocarbons and oxides of nitrous. It's not the best for fuel economy (leaner than stoich is) and it's not the best for power (richer than stoich is). The reason that richer than stoich is best for power is that, due to real-world imperfections in charge mixture, running an engine at stoich results in both excess oxygen and fuel in the exhaust stream. This is due to some of the oxygen and some of the fuel not being able to find each other in the combustion chamber. Oxygen is the thing it's hard to get into an engine so we want to be damned sure that we burn every last one of the buggers. To ensure this, we add extra fuel to make sure that none of the oxygen escapes alive. For "normal" engines, this results in Mean Best Torque being somewhere in the ballpark of 13 to 13.5 AFR. Now, many engines, especially forced-induction engines, will have problems with knock at that AFR. By further enriching the mixture, the efficiency of the combustion can be reduced to the point that knock is easier to control. Make sure you read that carefully, though. The increased resistance to knock is a result of reduced efficiency. So over-enrichment (richer than 12.5 or so) costs both fuel efficiency and power. However, it allows for higher boost and/or more timing. It's a trade off and different tuners will prioritize different aspects of that trade off. In the end, most theories on that compromise will end up making roughly the same power, just in different ways. |
10-29-2008, 03:00 AM | #22 |
Scooby Specialist
Member#: 107352
Join Date: Feb 2006
Chapter/Region:
SWIC
Vehicle:Not Respectable |
Very good write-up. I am also glad to see this all in one place.
I would like to add that even if the intake has not been changed, it would still be wise to check the MAF scaling. I have seen a couple STi's that needed MAF scaling with only a stage 2 setup. Also, I would have assumed that the SPT intake would not have needed any MAF scaling, but it actually needed quite a bit. Once again, great job in compiling all this info. |
10-29-2008, 03:35 AM | #23 |
Scooby Specialist
Member#: 155716
Join Date: Aug 2007
Chapter/Region:
MWSOC
Location: 07 Yeti AS-R SLc
Vehicle:2008 Spesh Pitch Pro 2010 Spesh Roubaix Elite |
wow...this really needs to be a sticky!
|
10-29-2008, 07:57 AM | #24 |
Scooby Specialist
Member#: 156973
Join Date: Aug 2007
Chapter/Region:
International
Location: Adelaide, Australia
Vehicle:2002 ADM WRX STi STi Black/Blue |
Got a PDF of all that info?
|
10-29-2008, 10:39 AM | #25 |
Scooby Guru
Member#: 70395
Join Date: Sep 2004
Chapter/Region:
MAIC
Location: Da-boonies,Va
|
Kudos!Great write up!
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
My Swap: 1999RS to 2002WRX. Complete Wiring Guide Inside | 99 rs | Subaru Conversions | 251 | 09-13-2021 12:01 PM |
A complete n00b's guide to changing the oil in your WRX (with pics!) | perret318 | Service & Maintenance | 153 | 11-28-2013 01:17 AM |
Complete open source tuning guide | shutupnshift04 | Commercial ECU Reflashes | 19 | 05-10-2007 05:16 PM |
Updated StreetTUNER Tuning Guide and Tuning Guide Worksheets... | Christian. | AccessPort | 0 | 04-17-2007 05:24 PM |
Complete Price Guide. | Diabolical1 CC | Canada Region Forum | 0 | 06-20-2006 02:40 AM |