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Self Tuning where to start?

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Discussion starter · #23 ·
Hey man!

Got it running again, ground went bad some how lol.

Having a hard time getting logger definitions defined to get the logger going so I can get an inside idea on what’s going on.

ive been reading the Bad Noodles Subie Nooby tuning guide. Haven’t gotten all the way through yet.

person I bought my vf52 from tuned her own car with 565cc injectors (same as mine) and has a fuel map to get me started.

I’m all for all the help I can get. Thank you so much
 
#24 ·
For logging I don't use romraider, sure it works but requires a laptop being in the car

Using this app to log is an option, I find it easier (Either run your tatrix threw usb or get a OBDLink LX/MX bluetooth adapter)

Your logger definitions for romraider can be found here (post number 2)

Whats your ECU ID? If you cant find somthing @uprev could make the file which would include stuff for the merp mod even
 
Discussion starter · #25 ·
Youre the second person to refer me to him. My Internal ID is A2WF200S. i was getting a full folder filled with files when downloading the .xml files before now i just get one .xml when downloading.

I was able to set logging definitions with that romraider link. missed that before hand, so thank you for that.

Starting to get live data now but not graphically. will continue to experiment.

looks like my turbo oil return line is failing so gotta deal with that bs now.

Appreciate the help!!!
 
Discussion starter · #27 ·
JohnSub2013sti said:
I took a quick look for your ECU definition and didn't find one, not sure if you have.
I have UpRevs number if you end up needing it; let me know and ill dm it to you

Hope you get that turbo line sorted
Click to expand...
Before I pulled the turbo for my oil leak, my afr (according to O2 sensor was 18) that’s really lean.

My question ATM is, if the fuel map calls for stoichiometric or less then, why am I hitting 18 at idle? There’s no boost at idle so whats going on? Is it because the the turbo in and of itself is just physically larger? Similarly to me putting a bigger TB on an na car I imagine.

I don’t particularly understand how/why the parameters are X but the actual varies?
 
Discussion starter · #29 ·
I had a new air filter. It was a constant 18, figured I’d take a look at the MAF and it was dirty as hell. Gave it a quick whip down and put it all back together idling at a constant 14.7 now. Phew.

getting an innovative or AEM wide band when I get the chance. To monitor it better. Seemingly a lot of people recommend the innovative over arm for using RomRaider.

center console cubby is busted might as well get a boost gauge as well
 
Discussion starter · #30 ·
Alrighty, ive read Bad Noodles Subie Newbie tuning guide a couple times now and have decided to just start editing my files. I have a rufdraft version saved to just start with. all ive really done is disable my P0420 cel so i stop getting yelled at about cats.

The Bad Noodles guide was so friggin helpful and relatively easy to understand (thank god i work in finance, im by no means an engineer lmao)

Him and a lot of guys on youtube suggust what makes the most sense and thats make it the safest it could possibly be right out the gate. WGDC all zeros
Image


do i have the correct tables here?

Appreciate any and all feedback đź’›
 
Discussion starter · #31 ·
Also want to add, this is what im refering to from Bad Noodles

Image


Also questions for the Open Loop fueling, is the whole table changed to 10.2? still factory tmic

And what is considered WOT for timing?

He references all these tables should get modified to some degree, as well as others (ignoring them for now). I assume its rather obvious that the tables very by name to some degree across all ECU's

Image


Cheers again lads
 
#32 ·
So you are invidia catless with a axle back and a bigger turbo? What turbo ? Anything else ?

When turning off P420 can you also check if you have these tables defined
Image

If you don't zero these out your closed loop fueling will think you have a failing cat and change the afr's

For the rest ill respond better tomorrow.
 
Discussion starter · #33 · (Edited)
JohnSub2013sti said:
So you are invidia catless with a axle back and a bigger turbo? What turbo ? Anything else ?

When turning off P420 can you also check if you have these tables defined
View attachment 74587
If you don't zero these out your closed loop fueling will think you have a failing cat and change the afr's

For the rest ill respond better tomorrow.
Click to expand...
I figured there would be another step to disabling that car code. Thanks. Turbo is a VF52 with perrin inlet. Appreciate your insight
 
Discussion starter · #34 ·
JohnSub2013sti said:
So you are invidia catless with a axle back and a bigger turbo? What turbo ? Anything else ?

When turning off P420 can you also check if you have these tables defined
View attachment 74587
If you don't zero these out your closed loop fueling will think you have a failing cat and change the afr's

For the rest ill respond better tomorrow.
Click to expand...
after thought to this, would that essentially put the car in limp mode if i didnt zero these out? i dont have an AF correction, just AF Learning limits and ranges two tables.
 
#35 ·
iamsandzy said:
Also want to add, this is what im refering to from Bad Noodles

View attachment 74585

Also questions for the Open Loop fueling, is the whole table changed to 10.2? still factory tmic

And what is considered WOT for timing?

He references all these tables should get modified to some degree, as well as others (ignoring them for now). I assume its rather obvious that the tables very by name to some degree across all ECU's

View attachment 74586

Cheers again lads
Click to expand...
For pulling timing take a look at where the ECU would normally pull timing from in order to save itself. (The Dynamic Advance Map). Where total timing is Base Timing + Dynamic Advance + other compensations. Do not take the timing out of the dynamic maps though, take it out of the base timing
Image


That being said you could pull your 4 deg from everything past 1 g/rev

I agree pull the timing and set the WGDC to 0 not sure I would touch the fuel map. What does the fuel map look like currently?
After the above the first thing to start with is closed loop fueling

A lot of the old romraider excel sheets have now been incorporated into this program
GitHub - vimsh/mafscaling

But it might be better to do the following for closed loop. After the car is warm
  1. Raise RPM to 2000 start logging, hold for 10s
  2. Raise RPM to 2500 slowly hold for 10s
  3. Raise RPM to 3000 slowly hold for 10s
  4. Raise RPM to 3500 slowly hold for 10s
  5. Raise RPM to 4000 slowly hold for 10s
  6. Also take a 10s log of the car idling
Then post the log
You need to get the Wideband going for the open loop stuff
 
#36 ·
iamsandzy said:
after thought to this, would that essentially put the car in limp mode if i didnt zero these out? i dont have an AF correction, just AF Learning limits and ranges two tables.
Click to expand...
Make sure its AFR #3 (for the rear O2). There will be front O2 learning tables that you need and should not be zeroed out
I don't think limp mode it would just change your fuel trims overtime. I think it leans it out to get a more complete burn (I think don't 100% remember)

You should post your Rom and ECU defs somtime
Do you have the Wideband + Defs from UpRev ?
 
Discussion starter · #37 ·
Here is my current fuel Map. Original, untouched

Image


As for timing, this is my base timing map, untouched. All highlighted in red is where you suggest pulling timing?

Image


I dont understand the g/rev, what per revolution? is over 1g/rev considered WOT? Forgive the ignorance, but the vernacular ain't clicking just yet.

Ive sent over my stock ROM file to Uprev to have him take a look and let me know what tables i should be messing with.

As for WGDC, what ive set to zero, were both good with? there are so many tables, ahahaha

gonna forget about the whole P0420 thing for now and move on with the rest.

Best,
 
#38 ·
To my understanding, g/rev is a measure of load, grams of air to revolutions.
So, think of it like this the larger the mass per revolution the bigger detonation you're going to get if you have knock. Knock at idle not ideal but isn't going to send a rod thew the block or blow a rod bearing short term. Knock under high load = goodbye engine lol

1g/rev is low load (at least on a EJ257); In general, its low load. If you wanted to be specific you could pull timing exactly where the dynamic timing is pulling but I've looked at a few maps and in general tuners pull the timing after 1g/rev from the base timing

I think you did everything right for the wastegate duty cycle, but I would need to see the rom to be sure; The files are different between years sometimes

P420 I'm sure Uprev will sort you on that. He helped me originally with it and even some crazier stuff like AVCS duty cycle

For reference on what a stage 2 fuel map and timing look's like here would be a good base map to work off of
RomRaider • View topic - USDM '11 STI Stg2 93oct, Tactrix/GS BCS - UPDATE 12/13/14

I would tend to use the above and pull timing out of that. But I'm also not sure how many timing and fuel maps your car has.
Mine has cruise, non-cruise, compensations if the ecu detects good or bad gas etc.

Generally speaking, when even cobb does a tune, they get rid of a lot of this, so the timing and fuel is the same every time
 
Discussion starter · #39 ·
Update:

WGDC have been set to zero across the board so will only run wastegate boost pressure.

Have pulled timing by 4(ish) degrees from 1g/rev and up.

there seems to be quite a difference between ECU across the board, i dont have anywhere near as many maps as that ROM does that you linked.

this is all i have for timing maps for timing advance.
Image


As for fueling, i have the following for CL and OL

Image


Still waiting on my Wideband to get in so doing what i can for now. Will only be playing with CL Fueling.
Like you said, incrementally increase rpm and log fueling (when car is warmed up). What should i be looking at for logging? AFR, knock correction, and im sure more. what do you need to see/what should i be looking at. OL/CL fueling to make sure im in CL?

Thank you, hope you have a great weekend!
 
#40 ·
Time, MAF Voltage, IAT, CL/OL Status, AFR Learning (LTFT), AFR Correction (STFT), AFR Stock Sensor, Engine Speed, and Engine Load (g/rev), Fine Knock Learn, Fine Knock Correction should do it

(Cars warm and no sudden throttle changes)
  1. Raise RPM to 2000 start logging, hold for 10s
  2. Raise RPM to 2500 slowly hold for 10s
  3. Raise RPM to 3000 slowly hold for 10s
  4. Raise RPM to 3500 slowly hold for 10s
  5. Raise RPM to 4000 slowly hold for 10s
  6. Also take a 10s log of the car idling

Then with the data for a given maf voltage

current g/s * ((LTFT + STFT)/100 +1)
with the points every 500 rpm you can make a general maf curve it might take a few cycles to get it perfect

This tool can also help with creating a nice smooth curve
GitHub - vimsh/mafscaling

If you post the data, I'll show you (also need to post your current maf scaling). Also, for interest post a screenshot of your learned values

Hope you have a good weekend too
 
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