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Old 01-31-2019, 03:25 PM   #1
probablyslowestwrx
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Join Date: Dec 2017
Default need some tuning advice

Currently have an 06 wrx with a vf39, tbe, sti pinks, sti intercooler, typhoon intake and ebcs. I got my car protuned a few years ago for 91 octane and it made 300 whp on a high reading dyno.

I'm looking to make my own adjustments to the cobb ots vf39 map (my 91 map is great and all but it's also on hella conservative timing. I've been taking a few classes online and have been messing around with subarus for a few years now but I really want a second opinion on what I should be working for since this is my first time actually adjusting a map!

thanks pls be gentle
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Old 01-31-2019, 06:40 PM   #2
SkateAndDestroy
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Join Date: Dec 2006
Chapter/Region: Tri-State
Location: Red Bank, NJ
Vehicle:
2011 BMW 328i Xdrive
EJ255 02 WRX Wagon PSM

Default

My advice would to first get a wideband that you are gonna be able to log with. If you are gonna start with a Cobb map, note that the intake you have isn't compatible and you are going to have to learn how to scale the maf.

Depending on the mileage of your car, I would also make sure the front oxygen sensor and maf sensor are operating properly as well as all boost leaks are taken care of. Anything mechanical.

Have you referenced any tuning guides specific to Subaru?

What makes you think the ignition timing is super low, what maps are you comparing the timing to?
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Old 02-01-2019, 12:09 AM   #3
subaru_gc8
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2004 WRX wagon
silver

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I would start with a wide band, and alot of datalogging. that is a good way to start, when you figure out what is going on with you figure out what is going on with your afrs and your timing, then you can start to figure out where you have holes in the map. as for the AVCS stuff if you want to know more about that you will need a dyno to get the most out of that. so jsut to be honest. timing is more damaging to your engine than messing with your fuel trims. so if messing with the timing, things happen very quick when you add boost to the equation. just be careful.
Also if you are cobb tuned the only way you can mess with the maps is to either buy into cobbs pro tune stuff or to get race tuner software but I dont know if they still offer that
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Old 02-01-2019, 10:24 AM   #4
86Dreams
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V7 S204

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As said. Get a wideband and learn how to properly model air flow. take short logs from your current tune and use that as reference for the tables you need to set up (sweep rpm at constant throttle 10%,20%,30%, etc to build a picture of your current tune). Consider that the more things you log the less resolution (and therefore accuracy) you will have.

Look on Rom Raider forums for discussions and tools. there is a lot of good info there that applies even if youre not using open source.
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Old 02-11-2019, 01:22 PM   #5
Master_300ZX
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OMGHi2U '05 WRX with STI Upgrades

Hey all,

Sorry about posting in here, but I'm not allowed to make a new thread, because I am new. I had looked up and down through the threads in an attempt to find info on this but, no luck. Sorry if I missed it and it does exist (thought it was weird I couldn't find it).

Anyway, I have an a blobeye WRX. TD04 turbo blew, I replaced with the VF48 from the STI, plus the following upgrades, Walbro 255 fuel pump, 565cc injectors, 3" catless downpipe with full exhaust AFTER the turbo, 3" all the way, new silicone turbo inlet, DC Sports "Cold Air" Intake, STI intercooler with silicone coupling/hoses, Cobb V3 with stage 1 WRX tune on it, and E3 spark plugs. I think that's everything I bought..

Stock 5 speed transmission and drivetrain and it still has the EJ205 of course.

I will obviously need a tune for all of this, I'm looking to see if anyone knows someone who can tune it for me, or know of any good available tunes for this. I guarantee I'm not the first to do this, so I'm sure there might be a decent base tune out there.

I literally work down the street from P&L and of course they could do it but, I'm really not looking to lose and arm and a leg in the process. I just need a decent tune that isn't going to blow my stuff up here until I can afford a really deep into it tune.

Thank you all for any advice or assistance you can provide. It is appreciated.
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Old 02-12-2019, 03:23 PM   #6
GlarryHoodDIT
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2016 WRX

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So you're running a turbo, injectors, exhaust, spark plugs, cold air intake, and intercooler that don't match the map notes for the map you're running.

I shudder to think of the detonation that has already blasted through that motor.

You answered your own question. GO TO P&L.
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Old 02-12-2019, 03:33 PM   #7
Rossline
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Quote:
Originally Posted by 86Dreams View Post
As said. Get a wideband and learn how to properly model air flow. take short logs from your current tune and use that as reference for the tables you need to set up (sweep rpm at constant throttle 10%,20%,30%, etc to build a picture of your current tune). Consider that the more things you log the less resolution (and therefore accuracy) you will have.

Look on Rom Raider forums for discussions and tools. there is a lot of good info there that applies even if youre not using open source.
+1
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Old 02-21-2019, 06:40 PM   #8
CoolHandLuke88
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2018 WRX
Ice Silver

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Hello,

This post is the most applicable to what I am trying to do, though not 100%. However, I cannot post a new thread, as after months of browsing I finally got around to actually creating an account. I'm locked from posting at this point.

Anyway, I am currently beginning to explore this vehicle's ECU and am just getting started, and have some questions.

I don't wish to derail this post, but I've been researching and there is a lot of info that points to making sure that MAF scaling is properly configured before making adjustments to tables, as many of the tables use calculated load that is based on the MAF scaling.

I just finished my first log starting with a fresh flashing of Cobb's Stg 1 HWG map (I live at an altitude around 2700ft above sea level so figured this would be a good starting point), and noticed that my AF Correction and AF Learning is kind of all over the place. It varies but goes as low as -10 and as high as 7 depending on conditions. Anyone have any input on this? I found some info that says if the corrections/learning values are consistently high or low that you scale the MAF by the same percentage (ie: af correction is consistently +7% then scale the MAF by +7% to bring corrections back in line).

Any help would be awesome, possibly by DM so as not to derail this thread.

Here's the graph:
https://datazap.me/u/coolhandluke198...g?log=0&data=6
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