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02-24-2013, 12:16 PM | #1 |
Scooby Specialist
Member#: 154175
Join Date: Jul 2007
Chapter/Region:
NWIC
Location: PDX
Vehicle:07 Impreza Wagon 2.5i??? |
first time tuning. need major help
hey guys. I am looking to start tuning my own car, but I am having a hard time knowing where to start. I have read the "tuning for newbies guide" and also a bunch of other threads on here/ as well as the romraider forums.
I am not looking to be spoonfed, but I just need a little bit of direction on where to start, and I think I will be able to figure it out much more quickly with a bit of guidance from you guys that have been doing this for awhile now. so anyways here is what I have for tuning equipment innovate mtxl wideband blue vagcom cable romraider ecuflash v1.29.906 learningview windows 8 here is a link to my build thread on the car http://forums.nasioc.com/forums/show....php?t=1753564 cn: 07 2.5i m/t built motor large turbo modded wrx injectors blow through maf mbc right now I have just a base tune that I had done by someone else. it's running wastegate pressure (7pounds)... I would like to smooth everything out, and start turning up the boost. basically I am wondering where to start? what should I be logging?
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Last edited by olsen726; 02-24-2013 at 12:25 PM. |
02-24-2013, 04:05 PM | #2 |
Scooby Specialist
Member#: 323908
Join Date: Jun 2012
Chapter/Region:
MWSOC
Location: Dayton Ohio
Vehicle:2013 BRZ ltd ISM |
What rom are you running on your NA ecu that allows you to tune for boost? Are you using a WRX rom on your NA ECU?
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03-01-2013, 11:49 AM | #3 |
Scooby Specialist
Member#: 154175
Join Date: Jul 2007
Chapter/Region:
NWIC
Location: PDX
Vehicle:07 Impreza Wagon 2.5i??? |
using the factory 2.5i ecu/ rom.
im pretty sure the ecu doesnt know that the car is boosting..that you just tune it how people would tune there older na/t subarus with a piggyback i could be way off though. i am still trying to learn this as i go |
03-02-2013, 04:24 PM | #4 |
Scooby Specialist
Member#: 323379
Join Date: Jun 2012
Vehicle:1992 Trans Am |
Does the stock MAP sensor read high enough? Can you scale the necessary tables? I've tuned a turbo car on an na ecm. Not a Subaru but It can be done. Not ideal but it works.
Last edited by ProfessWRX; 03-02-2013 at 04:32 PM. |
03-03-2013, 02:00 AM | #5 |
Scooby Specialist
Member#: 154175
Join Date: Jul 2007
Chapter/Region:
NWIC
Location: PDX
Vehicle:07 Impreza Wagon 2.5i??? |
im not sure about the factory map sensor. i believe it will read high enough, but i dont know for sure.
and yes i am pretty sure you can scale everything that you would be able to scale on a wrx ecu |
03-03-2013, 02:01 AM | #6 |
Scooby Specialist
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tomorrow i will post a log. hopefully one of you guys can help me out with deciphering the info on it
is this everything i should be logging ***8226; Engine Speed (RPM) ***8226; Engine Load ***8226; IAM ***8226; A/F Correction ***8226; A/F Learning ***8226; A/F Sensor ***8226; CL/OL Fueling ***8226; Feedback Knock Correction (FBCK) ***8226; Fine Learning Knock Correction (FLKC) ***8226; Ignition Base Timing ***8226; Ignition Total Timing ***8226; Knock Correction Advance ***8226; Mass Air Flow Sensor Voltage ***8226; Throttle Opening Angle ***8226; Manifold Relative Pressure ***8226; Injector Duty Cycle ***8226; Intake Air Temp |
03-03-2013, 02:54 AM | #7 | |
Scooby Specialist
Member#: 323379
Join Date: Jun 2012
Vehicle:1992 Trans Am |
Quote:
If also skip base timing and advance timing.total is all that's really important. Scan absolute manifold pressure and atmospheric pressure instead of relative pressure. ...But that's just me. Also idc is only needed if you question their ability to keep up with fueling requirements. Otherwise fewer parameters is better. |
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03-03-2013, 12:15 PM | #8 |
Scooby Specialist
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Join Date: Jul 2007
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sounds good. i will head out here in a few to get some logging done... thanks for all of the help
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03-03-2013, 02:45 PM | #9 |
Scooby Specialist
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Join Date: Jul 2007
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of course the frigging serial to usb adapter that i bought wont work with windows 8... i will just have to log without the wideband, until i can get another converter cable
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03-08-2013, 05:36 PM | #10 |
Scooby Specialist
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Join Date: Jul 2007
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Vehicle:07 Impreza Wagon 2.5i??? |
finally got everything hooked up and working properly.
here are some of my logs i logged them today 60 degrees out/ blue sky 3rd gear 3k-6200 wot gonna figure out how to post the logs, and have them on here very shortly |
03-08-2013, 05:49 PM | #11 |
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http://www.fileswap.com/dl/RNPxwD4z/
http://www.fileswap.com/dl/K1vkKd7rrf/ http://www.fileswap.com/dl/B9yCWaynKk/ that is a link to the files... i am still trying to figure out how to post them on here |
03-08-2013, 06:26 PM | #12 |
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i think i figured it out... here is the 3rd log i did
https://docs.google.com/spreadsheet/...=0&output=html |
03-08-2013, 06:32 PM | #13 |
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03-10-2013, 02:54 PM | #14 |
Scooby Specialist
Member#: 323379
Join Date: Jun 2012
Vehicle:1992 Trans Am |
Don't go wot again. You are very lean.
It also looks like your map sensor is maxed out at 19.88. Don't know enough about your computer but it could be a sensor limitation or the ECM reading limit. I assume the sensor. That means the computer is seeing 5 psi max. Last edited by ProfessWRX; 03-10-2013 at 03:34 PM. |
03-10-2013, 03:36 PM | #15 |
Scooby Specialist
Member#: 154175
Join Date: Jul 2007
Chapter/Region:
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Vehicle:07 Impreza Wagon 2.5i??? |
should i see if i can track down a wrx map sensor, and swap that it?
also i thought around 11.1 afr was what it was supposed to be under boost, or are you referring to the 3246-4216 rpm range? |
03-10-2013, 06:53 PM | #16 | |
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Join Date: Jun 2012
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Quote:
And yes, 3200-4200 is way too lean. |
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03-10-2013, 09:39 PM | #17 |
Scooby Specialist
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Ok, thanks for the help. I will do some digging, and see what I can find on the map sensor issue... I have a feeling I wont be able to find much info on it though... there arent a whole lot of people tuning/boosting these cars
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03-10-2013, 09:59 PM | #18 |
Scooby Specialist
Member#: 154175
Join Date: Jul 2007
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Just found a thread on rs25 where a guy said that his map maxed out at 5psi too. He had to run a voltage clamp thing... im still reading up on my options though
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03-15-2013, 08:25 PM | #19 |
Scooby Specialist
Member#: 154175
Join Date: Jul 2007
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i grabbed a map sensor off of a wrx motor that i had laying around, and it bolted right up now i just need to figure out how to calibrate this thing!
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03-15-2013, 09:24 PM | #20 |
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if the calibration values are in the same units as the wrx rom, you may be able to pull it directly from there. Hopefully somebody who has more knowledge on this type of situation can help...
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03-20-2013, 03:49 AM | #21 |
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im just getting back into tuning, but can i get a copy of your rom? i wanna see how the map lines up with the log. thanks!
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03-20-2013, 10:18 PM | #22 |
Scooby Specialist
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Join Date: Jul 2007
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i will get you one as soon as i can figure out how to get ecuflash to read my rom
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03-25-2013, 11:29 AM | #23 |
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Your 2.5i uses a MAF (Mass Air Flow) sensor, not a MAP (Manifold Air Pressure) sensor. Where exactly are you plugging in the MAP sensor? If it's replacing the MAF, I wouldn't think the ECU (which is still expecting MAF) will be too happy.
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03-25-2013, 05:18 PM | #24 |
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errrrr....they are not mutually exclusive...
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03-28-2013, 12:26 PM | #25 |
Scooby Specialist
Member#: 154175
Join Date: Jul 2007
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It uses both map and maf.
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