This worked! I've had the Cobb Stage 1+ Big SF going for around a year now, when all of sudden the DAM started dropping with FKL going erratic with a few -4 Feedback Knocks here and there. I read somewhere else about the MAF sensor and the filter position, but thanks for pointing out the MAP sensor. It was covered in oil and black stuff too. Now my DAM is happily on it's way back up with no knocks (other than phantom), and positive FKL values.
I was just tuned by JR, so I haven’t checked any numbers since then. The other day, I was changing my low beam bulb and am 90% sure I knocked the Cobb filter and moved it out of position. I used this video to also clean my MAF and MAP at the same time. Had to readjust my filter several times, but my numbers are finally closer to zero. Thank you!!
Just for added measure for anyone else experiencing -11 or higher af learning: For me, anything further than -10.16 is usually the result of a coupler coming loose on my charge pipe where it meets my turbo. I have a Perrin FMIC. For example: if I start getting -11.xx, -12.xx, or more af learning 1 readings, my coupler has been the culprit every time 😂 Hope this helps.
Brooo thanks so much for watching!!! Feel free to share to spread the word! The intake filter placement is something people overlook. I’m glad it worked it for you.
Had similar issues on 13wrx with a ej257. Stay away from the cobb intakes. Make sure all pipes and hoses are tight. Be careful with aftermarket 02 sensors or maf sensors. Inspect sensors for dirtiness and clean with correct chemical. If you do have a cobb switch out the filter to aem or k and n and get a t style clamp. Make sure you get a tune!!
Found your channel not too long ago! I am super thankful for this video, I cleaned my maf and it worked perfectly and fixed my issue! So thanks again for helpful video
omg dude no way thank you i just came across your video and i took my maf sensor out and cleaned it and omg dude it’s fixed it was running -17 and now it’s below 5 when i would rev it, it would go to like the 15 and now it stays below 5 thank you so much i subbed to your channel thank you for helping so much!!
Bro thank you so much for this video. I did everything and reflashed and it’s running so much smoother with numbers -5/+5. Soooo relieved. Thank you again.
Thank you for explaining this and helping me troubleshoot. I was hitting AF learning 1 +/- 36 % at one point with a too-rich code. Once I cleaned my MAP and MAF sensors with MAF cleaner along with double-checking my filter, my car now works perfectly. AF learning 1 at +/- 10%. 2016 wrx almost FBO - manifold, FF and turbo
I'm so glad I came across this video. I've been trying everything I could think of but never knew about the MAP sensor. Hopefully it's the culprit. I'll have to give it a try.
I cleaned the map sensor. It was covered in black oil. I also recleaned the maf sensor and repositioned my air intake. I also reflashed my tune. I have always just put the intake on exactly 1 inch. But this time I tried it in different positions as you've shown. It turns out that on my car it works best at just over 1/2 inch. I've put over 100 miles on since and my A/F readings have been looking great. Again thanks so much for the video and the information.
@@codymccormick2787no, didn’t seem to make a difference. It’s crazy. I can reflash it and it’ll be perfect for like 350 miles. Then right back to same issues. Not sure what to do at this point.
I have the same issue on my 2021 WRX, I recently got a new replacement filter for my Cobb Big SF intake, and I cleaned my MAF a few weeks ago, but my AF is still -20 to -28 when idling sometimes. I'll try cleaning the MAP sensor.
@@blackdiamondyt2838 I pretty much tried everything I saw on NASIOC and other forums regarding this issue. Long story short, a walnut blast fixed the P0172, which by the way is necessary and very worth the money for many other reasons. However, my AF learning still dips below -10 sometimes, but never below -18 anymore. The BigSF intake is the biggest culprit, since it has an inherent design flaw in its piping layout and MAF mount, and my tuner and shop both recommend going to the new SF intake. I'm still saving up for that as well as a couple other mods, but in the meantime it's been running fine.
I had this exact problem and here are the steps that I took to fix it: Things to check to fix rough idle problem or intermittent stalling on a WRX 1. Fouled throttle body, follow steps a ruclips.net/video/mQ0u-3qPFDQ/видео.html to clean the throttle body. 2. Dirty Mass Air Flow sensor, follow directions on box for cleaning sensor and filter. Alternatively, search the internet for detailed instructions. 3. Clean or replace the idle air control valve (IACV). Search the internet for 'clean Subaru IACV valve' for instructions. 4. Perform the Subaru Idle Relearn process. I initially thought that it was a joke but it actually works. See www.perth-wrx.com/vb/mechanicals/59901-e-throttle-idle-relearn-procedure.html for one of many examples on the internet. 5. Reset the car computer by disconnecting both terminals and then touching them together for 30 seconds. Alternatively, if you are running an aftermarket tuning device (such as the Cobb Accessport), change the map to 'Stage 0', then reset the ECU (via the Accessport) and then change the map back to the original. This should temporarily resolve the issue for a week or so, at least well enough to let you drive from A to B for a while 4. Perform IAG EGR delete, see ruclips.net/video/gvVmCU2ElN0/видео.html for instructions 5. Replace upstream O2 Sensor (pre CAT). While it is possible to change this sensor with a 22 mm wrench you'll save yourself a headache if you just rent or borrow the O2 sensor wrench that can be found at most auto parts stores. 6. Replace the downstream O2 sensor (post CAT). While highly unlikely that this will be the culprit, in some rare cases this sensor can be problematic. After trying nearly every one of these steps, my problem ended up being a bad upstream O2 sensor, once I replaced it my WRX drives as well as the day I bought it.
You’re a lifesaver man, I didn’t even know Subaru had some idle relearn procedure. Car started idling weird two days ago and now it’s fixed because of you.
My af correction is at 20-30 at idle, what would be the cuase of that, I checked vacuum lines all seem good. Also when I rev the car up and let go of gas the rooms drop and feel like the car is going to turn off
If you have an aftermarket intake, I would look into that. I found out my intake tube was bent which caused some issues. ruclips.net/video/lDGN-05stKs/видео.htmlsi=fKiymiH8h8LiEC7A It could be a bunch of other things too, like the turbo inlet, cracked BPV, etc.
No problem, thanks for watching it! Yes, definitely. Any leak Pre-catback may cause af numbers to be skewed. I only know from experience because when my tmic coupler popped off during WOT, my Af correction went to -50+%. But yes, any leak pre-catback can cause abnormal numbers.
Would replacing o2 sensor would work? My car it’s at -20/-32 and when I accelerate slowly it stays at -18 it’s kinda misfiring but I have no codes I’m guessing my tuner (Mikey) disable that any suggestions?
If it’s misfiring then I would check the spark plugs and coil packs. Mine recently shut off after a WOT pull in 3rd and I’m thinking it’s cutting out due to the plugs. Hard to say if it’s due to the o2 sensor or not.
That’s exactly what mine did and the intake filter placement fixed the issue. It took a while to find the “right” spot but once you do, your numbers shouldn’t exceed that amount anymore.
I have a 2019 wrx & installed a cat back exhaust & my af learning stays normally between 12-/+. On open throttle it goes closer to 20. Idk if that’s normal or something to look into. & after installing it , my idle is lower than normal. It idles at 750? The second bar , sometimes it’ll almost stall out from the rpm’s dropping to zero.& it sounds like my engines overheating when it isn’t. Today I drove it & I had some noise coming from my engine bay in 1st . Any ideas ?
Seems like you have an exhaust leak somewhere, especially if you hear a clunk. I would make sure your bolts on the j-pipe to catback connection is tight. If they’re tight already, you probably need a donut gasket or adapter of some sort to ensure that it’s fully sealed.
Hey bro i recently installed a cobb big sf intake and stage 1+ OTS tune on my 2020 WRX. When my buddy was driving behind me, he noticed when I floor it, the car would let out some black smoke from the exhaust. I was reading that this is due to running rich, is this true? and id so would these steps help me? my car only has 15k miles so i doubt my sensor is dirty, but i’m not sure. Thankyou!
Before anything, I would make sure your intake filter placement is spot on. If that doesn’t help, then I’d carefully check the sensors. Not sure if the black smoke has anything to due with running rich. It could be the OTS tune itself.
@@ronfromportland Thank you so much for getting back to me on a video you posted 2 years ago! Assuming that the intake placement is okay and the sensors are clean do you think there is a possibility that the OTS tune has a “break in period”? If not would you recommend going back to stock until I get a custom tune?
@@rishi5803 hmmm I’ve never heard of a break in period for tunes. Typically you let it idle for a few mins and drive smoothly/lightly for a few miles after installing a tune. I had no issues with my OTS tune when I had it but it doesn’t mean it’ll be the same for everyone. I personally would just save all my parts until the protune but that’s just me!
was having -15% to -20% af learning before, now i have +3 to +7 and on WOT it doesn’t zero out, did you have this problem? i did strip the map bolt but replaced it. any ideas?
That is strange, I’ve never had that happen. Only thing I could think of is the intake filter placement. I’d continue moving it around until the values are better. Sounds like your car is running lean due to the positive values.
I KEEP GETTING +10 AND -3 ON AF LEARNING, BUT I ALSO FEEL LIKE IM NOT GETTING ALL THE BOOST THAT I SHOULD. USE TO PEAK AT 21ISH AND NOW I HAVE TO GO WOT TO GET TO 18
So I just watched your video and I haven’t performed anything yet besides moving the filter a little bit on the intake, but my numbers for AF correction are at wide-open throttle -27.34 and positive 10.94, and then my AF learning is -14.06 and right now idol it’s 1.56… should I be worried? Lol. It is dynotuned
Are you referring to the min and max numbers for AF Correction after you do a WOT pull? If so, that’s normal. If you see the number on the top (the large one) constantly at those values then it’s cause for concern. AF Learning seems fine!
@@ronfromportland yes I’m referring to the two smaller numbers for AF correction, it usually sits around -28 and 10+ The larger number usually hits around there if I just step on the pedal and release it quick without hitting full boost when I’m wide-open throttle it doesn’t always hit those numbers there a little bit lower. It’s just weird to me lol
I just install stage 1+ on my 18 wrx base with accessport everything was going well tested drive using ots map but out nowhere I got a check engine light some other light? I’m using 91 octane ots map
Hey bro! My Af Learning 1 is always at -11. At times it goes lower, but goes quickly back to -11. I have no place to work on my car, so i'm planning on waiting until June-July till winter is over and no snow. Do you think i should be worried for leaving it till then ?
Does the a/f learning stay in memory when engine is shut off? My learning is at -14% at light throttle and just last week was in the single digits i dont like it
Hey man so before i change my sparkplugs i was running at -8.59 to +8.59 af learning 1 readings. But when i changed my sparkplugs it rose up to 0.00 to +30. What do you think would be the problem? Earlier today my car got stall when i was at stoplight then i got a cel code p0171. Then i tried deleting the code then kinda fixing the positioning of my intake and cleaning the maf sensor then reflash my ots tune. Now i have -4.59 to +10.59 readings and when im driving i have 0.00 af learning 1. Do you think is it normal now? Or should i try cleaning the map sensor too
Cleaning the map sensor wouldn’t hurt. Just be very careful with that bolt on the intake manifold since it’s very easy to strip. Are you sure the spark plugs were properly gapped?
-20 isn’t the worst but I would suggest looking into possible leaks. Here’s the latest issue I found with my car: ruclips.net/video/lDGN-05stKs/видео.html
I just installed my Cobb Sf big intake and IAG AOS and im having code p0171 issue so ill be falling these steps and my AF is high during idle like 30s and 40s.
@@ronfromportland Yea that was my first thought so Im going to do a smoke test along with going over cleaning the MAP and MAF sensors just to make sure.
@@ronfromportland the problems are kicking up, just got a code for running too lean, along with a code for running too rich. I take that I should be worried about this but what causes this because I really got the 2 codes at the same time?
@@carlitos.1 that I’m not entirely sure since I’ve never had both codes at the same time. Can start by cleaning the MAF extension harness. Those often get corrosion which causes these types of issues.
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More AF issues! Be sure to check your intake tube! Here’s what I found: ruclips.net/video/lDGN-05stKs/видео.html
This worked! I've had the Cobb Stage 1+ Big SF going for around a year now, when all of sudden the DAM started dropping with FKL going erratic with a few -4 Feedback Knocks here and there. I read somewhere else about the MAF sensor and the filter position, but thanks for pointing out the MAP sensor. It was covered in oil and black stuff too. Now my DAM is happily on it's way back up with no knocks (other than phantom), and positive FKL values.
Glad it worked out man!!!
I was just tuned by JR, so I haven’t checked any numbers since then. The other day, I was changing my low beam bulb and am 90% sure I knocked the Cobb filter and moved it out of position. I used this video to also clean my MAF and MAP at the same time. Had to readjust my filter several times, but my numbers are finally closer to zero. Thank you!!
Man thank you so much! Knowing I was able to help means the world to me!!!
Just for added measure for anyone else experiencing -11 or higher af learning:
For me, anything further than -10.16 is usually the result of a coupler coming loose on my charge pipe where it meets my turbo. I have a Perrin FMIC.
For example: if I start getting -11.xx, -12.xx, or more af learning 1 readings, my coupler has been the culprit every time 😂
Hope this helps.
Great video!!! Had AF readings from -15 to -20 and got back to zero with these simple steps!!
Brooo thanks so much for watching!!! Feel free to share to spread the word! The intake filter placement is something people overlook. I’m glad it worked it for you.
Had similar issues on 13wrx with a ej257. Stay away from the cobb intakes. Make sure all pipes and hoses are tight. Be careful with aftermarket 02 sensors or maf sensors. Inspect sensors for dirtiness and clean with correct chemical. If you do have a cobb switch out the filter to aem or k and n and get a t style clamp. Make sure you get a tune!!
@@scoutsniper762 💯 !!
Found your channel not too long ago! I am super thankful for this video, I cleaned my maf and it worked perfectly and fixed my issue! So thanks again for helpful video
So glad to hear that, man! Glad to hear it worked for you. Thanks for checking out the video!
yeah those cold starts always throw people off. Good video!
Every time! Thank you 🙏
omg dude no way thank you i just came across your video and i took my maf sensor out and cleaned it and omg dude it’s fixed it was running -17 and now it’s below 5 when i would rev it, it would go to like the 15 and now it stays below 5 thank you so much i subbed to your channel thank you for helping so much!!
That’s what I’m talking about! Glad it worked out for you. Thanks for subbing to the channel! 🙏
Bro thank you so much for this video. I did everything and reflashed and it’s running so much smoother with numbers -5/+5. Soooo relieved. Thank you again.
That’s what’s up bro! Glad it worked out for you! 🔥
Thank you for explaining this and helping me troubleshoot. I was hitting AF learning 1 +/- 36 % at one point with a too-rich code. Once I cleaned my MAP and MAF sensors with MAF cleaner along with double-checking my filter, my car now works perfectly. AF learning 1 at +/- 10%.
2016 wrx almost FBO - manifold, FF and turbo
Dude that is so good to hear! Glad I was able to help! You just made my day man.
I'm so glad I came across this video. I've been trying everything I could think of but never knew about the MAP sensor. Hopefully it's the culprit. I'll have to give it a try.
Good luck! Let me know how it goes.
I cleaned the map sensor. It was covered in black oil. I also recleaned the maf sensor and repositioned my air intake. I also reflashed my tune.
I have always just put the intake on exactly 1 inch. But this time I tried it in different positions as you've shown. It turns out that on my car it works best at just over 1/2 inch.
I've put over 100 miles on since and my A/F readings have been looking great.
Again thanks so much for the video and the information.
@@anonamus_guy that’s what I’m talkin’ about! Glad it worked out for you. Thanks for reporting back!
Very good guide, my AF reading is now back to normal, I thought it was the dirty intake. Thanks!
Glad to help! Thanks for watching!
Im going to have to try this I think im running super lean. I’ve got dead spots and hesitation around 50% throttle and up.
Did this fix it?? I’m having the same issue on my 16 wrx
@@codymccormick2787no, didn’t seem to make a difference. It’s crazy. I can reflash it and it’ll be perfect for like 350 miles. Then right back to same issues. Not sure what to do at this point.
@JDubMoto try unplugging your front o2 sensor closer to the turbo. It's the problem goes away replace your o2.
@@jdubmotohaving the same problem
Thanks bro, that worked. Saves me some money!
@@agile823 glad it worked out for you!
I have the same issue on my 2021 WRX, I recently got a new replacement filter for my Cobb Big SF intake, and I cleaned my MAF a few weeks ago, but my AF is still -20 to -28 when idling sometimes. I'll try cleaning the MAP sensor.
Did you figure out the issues? I have the same year and intake.
@@blackdiamondyt2838 I pretty much tried everything I saw on NASIOC and other forums regarding this issue. Long story short, a walnut blast fixed the P0172, which by the way is necessary and very worth the money for many other reasons. However, my AF learning still dips below -10 sometimes, but never below -18 anymore. The BigSF intake is the biggest culprit, since it has an inherent design flaw in its piping layout and MAF mount, and my tuner and shop both recommend going to the new SF intake. I'm still saving up for that as well as a couple other mods, but in the meantime it's been running fine.
Thanks for the steps man! hopefully it will help me get my AF values better! Subbed!
I appreciate it man! I hope it works out for you!
Good info my dude I will keep this in mind I run into issues!👍👍👍👍
Thanks for checking out the video! One of my first ones uploaded.
Having this issue rn just started to e tune and can’t even move forward from first data log. Hoping weighing it around will help
Good luck man, let me know how it goes!
Cleaned my maf and started popping on start up and cleared out scared to clean the map sensor.....
When you stripped that map sensor are you saying you just replaced the bolt or the entire manifold for a fix ?
Replaced the bolt with a slightly larger one just enough for it to bite.
I had this exact problem and here are the steps that I took to fix it:
Things to check to fix rough idle problem or intermittent stalling on a WRX
1. Fouled throttle body, follow steps a ruclips.net/video/mQ0u-3qPFDQ/видео.html to clean the throttle body.
2. Dirty Mass Air Flow sensor, follow directions on box for cleaning sensor and filter. Alternatively, search the internet for detailed instructions.
3. Clean or replace the idle air control valve (IACV). Search the internet for 'clean Subaru IACV valve' for instructions.
4. Perform the Subaru Idle Relearn process. I initially thought that it was a joke but it actually works. See www.perth-wrx.com/vb/mechanicals/59901-e-throttle-idle-relearn-procedure.html for one of many examples on the internet.
5. Reset the car computer by disconnecting both terminals and then touching them together for 30 seconds. Alternatively, if you are running an aftermarket tuning device (such as the Cobb Accessport), change the map to 'Stage 0', then reset the ECU (via the Accessport) and then change the map back to the original. This should temporarily resolve the issue for a week or so, at least well enough to let you drive from A to B for a while
4. Perform IAG EGR delete, see ruclips.net/video/gvVmCU2ElN0/видео.html for instructions
5. Replace upstream O2 Sensor (pre CAT). While it is possible to change this sensor with a 22 mm wrench you'll save yourself a headache if you just rent or borrow the O2 sensor wrench that can be found at most auto parts stores.
6. Replace the downstream O2 sensor (post CAT). While highly unlikely that this will be the culprit, in some rare cases this sensor can be problematic.
After trying nearly every one of these steps, my problem ended up being a bad upstream O2 sensor, once I replaced it my WRX drives as well as the day I bought it.
Thank you so much for your detailed information!!!! I will pin this comment so others can check it out!
You’re a lifesaver man, I didn’t even know Subaru had some idle relearn procedure. Car started idling weird two days ago and now it’s fixed because of you.
Did you had an engine light for your 02 sensor? I’m having the same issues only after installing the big sf intake. Had stage 1
And no issues
My af correction is at 20-30 at idle, what would be the cuase of that, I checked vacuum lines all seem good. Also when I rev the car up and let go of gas the rooms drop and feel like the car is going to turn off
If you have an aftermarket intake, I would look into that. I found out my intake tube was bent which caused some issues. ruclips.net/video/lDGN-05stKs/видео.htmlsi=fKiymiH8h8LiEC7A
It could be a bunch of other things too, like the turbo inlet, cracked BPV, etc.
I know this is an old video but was that filter dry? i didnt see any oil on it, or now that i think about it you might have the clear oil
The filter itself is supposed to be oiled but only lightly so it may appear to be dry.
Thank you for this video! You think a small header leak can make my af correction number rich?
No problem, thanks for watching it! Yes, definitely. Any leak Pre-catback may cause af numbers to be skewed. I only know from experience because when my tmic coupler popped off during WOT, my Af correction went to -50+%. But yes, any leak pre-catback can cause abnormal numbers.
Would replacing o2 sensor would work? My car it’s at -20/-32 and when I accelerate slowly it stays at -18 it’s kinda misfiring but I have no codes I’m guessing my tuner (Mikey) disable that any suggestions?
If it’s misfiring then I would check the spark plugs and coil packs. Mine recently shut off after a WOT pull in 3rd and I’m thinking it’s cutting out due to the plugs. Hard to say if it’s due to the o2 sensor or not.
For my AF Learning 1 I’m sitting around 32, but on WOT it goes back to 0 for a split second. Could that be the filter placement by itself?
That’s exactly what mine did and the intake filter placement fixed the issue. It took a while to find the “right” spot but once you do, your numbers shouldn’t exceed that amount anymore.
Great video man. Did the filter placement have any effect on your DAM readings?
Thanks man. Nope, DAM was at a constant 1 regardless of the AF numbers.
@@ronfromportland did u ever have low DAM with the OTS 1+ map?
@@redrexx12 nope, never. Only a couple of times, most likely due to bad gas.
I recently picked up a 2016 wrx. My AF learning 1 Negative is -38. its slowly been going up. how serious could this be??
Depending on your mods, there could be vacuum leak somewhere. I’d check all lines around the turbo inlet/BPV.
I have a 2019 wrx & installed a cat back exhaust & my af learning stays normally between 12-/+. On open throttle it goes closer to 20. Idk if that’s normal or something to look into. & after installing it , my idle is lower than normal. It idles at 750? The second bar , sometimes it’ll almost stall out from the rpm’s dropping to zero.& it sounds like my engines overheating when it isn’t. Today I drove it & I had some noise coming from my engine bay in 1st . Any ideas ?
Seems like you have an exhaust leak somewhere, especially if you hear a clunk. I would make sure your bolts on the j-pipe to catback connection is tight. If they’re tight already, you probably need a donut gasket or adapter of some sort to ensure that it’s fully sealed.
Hey bro i recently installed a cobb big sf intake and stage 1+ OTS tune on my 2020 WRX. When my buddy was driving behind me, he noticed when I floor it, the car would let out some black smoke from the exhaust. I was reading that this is due to running rich, is this true? and id so would these steps help me? my car only has 15k miles so i doubt my sensor is dirty, but i’m not sure. Thankyou!
Before anything, I would make sure your intake filter placement is spot on. If that doesn’t help, then I’d carefully check the sensors. Not sure if the black smoke has anything to due with running rich. It could be the OTS tune itself.
@@ronfromportland Thank you so much for getting back to me on a video you posted 2 years ago!
Assuming that the intake placement is okay and the sensors are clean do you think there is a possibility that the OTS tune has a “break in period”?
If not would you recommend going back to stock until I get a custom tune?
@@rishi5803 hmmm I’ve never heard of a break in period for tunes. Typically you let it idle for a few mins and drive smoothly/lightly for a few miles after installing a tune. I had no issues with my OTS tune when I had it but it doesn’t mean it’ll be the same for everyone. I personally would just save all my parts until the protune but that’s just me!
After u found the issue, do the codes disappear? Or one u know u found the issue, then clear the code?
Codes should disappear once you correct the issue.
When you say angle, as in angle down or up?
Either or, whichever position makes the car happy. For mine, I had to angle it down.
was having -15% to -20% af learning before, now i have +3 to +7 and on WOT it doesn’t zero out, did you have this problem? i did strip the map bolt but replaced it. any ideas?
That is strange, I’ve never had that happen. Only thing I could think of is the intake filter placement. I’d continue moving it around until the values are better. Sounds like your car is running lean due to the positive values.
what are the normal ranges for af learning 1 on FA engines?
I’ve read +-20% is normal but I think around +-15% is good.
Good luck finding CRC MAF cleaner anywhere, been trying to take care of this for 2 weeks now and no auto parts store has any
I KEEP GETTING +10 AND -3 ON AF LEARNING, BUT I ALSO FEEL LIKE IM NOT GETTING ALL THE BOOST THAT I SHOULD. USE TO PEAK AT 21ISH AND NOW I HAVE TO GO WOT TO GET TO 18
Sounds like a vacuum leak somewhere man. I’d double check all of the connections, especially the intercooler coupler.
@@ronfromportland thanks
@@xxmiguelmartinezxx no problem man. Let me know how it goes. Also check the charge pipe connection. That tends to get loose too.
@@ronfromportland I did it all before I left work because of the light, my AF correction went crazy -15 +15 but my learning stayed -3 to +7
dude my af learning 1 is currently sitting at 12.5 idle and peaked at 17.19
That’s on the normal side. I wouldn’t worry about it tbh!
So I just watched your video and I haven’t performed anything yet besides moving the filter a little bit on the intake, but my numbers for AF correction are at wide-open throttle -27.34 and positive 10.94, and then my AF learning is -14.06 and right now idol it’s 1.56… should I be worried? Lol. It is dynotuned
Are you referring to the min and max numbers for AF Correction after you do a WOT pull? If so, that’s normal. If you see the number on the top (the large one) constantly at those values then it’s cause for concern. AF Learning seems fine!
@@ronfromportland yes I’m referring to the two smaller numbers for AF correction, it usually sits around -28 and 10+ The larger number usually hits around there if I just step on the pedal and release it quick without hitting full boost when I’m wide-open throttle it doesn’t always hit those numbers there a little bit lower. It’s just weird to me lol
Would any of these sensor trigger a check engine light?
Potentially, yes.
Use the AccessPort to scan for error codes. Sometimes they pop up there even without a CEL.
@@ronfromportland thank you 🙏 and thanks for all the content I subbed!
@@kcovac2029 Glad to help! Thank you!
I just install stage 1+ on my 18 wrx base with accessport everything was going well tested drive using ots map but out nowhere I got a check engine light some other light? I’m using 91 octane ots map
Use the AccessPort to pull up the codes to get more info on them. It could be anything. You sure you installed the correct map?
I downloaded right map now everything running great thx
Thanks bro!
🙏🙏🙏
Hey bro! My Af Learning 1 is always at -11. At times it goes lower, but goes quickly back to -11. I have no place to work on my car, so i'm planning on waiting until June-July till winter is over and no snow. Do you think i should be worried for leaving it till then ?
I wouldn’t be worried about -11. Cobb says that up to + - 20 is acceptable. If it goes beyond 20 then I would look into it for sure.
Does the a/f learning stay in memory when engine is shut off? My learning is at -14% at light throttle and just last week was in the single digits i dont like it
Not entirely sure but I would assume so. Mine tends to fluctuate until it “learns” the correct values again.
hey i stripped my bolt too what size did you use ??? or do i just need to go a bit bigger ??
I just went a size up, just enough for it to secure the MAP sensor.
Hey man so before i change my sparkplugs i was running at -8.59 to +8.59 af learning 1 readings. But when i changed my sparkplugs it rose up to 0.00 to +30. What do you think would be the problem? Earlier today my car got stall when i was at stoplight then i got a cel code p0171. Then i tried deleting the code then kinda fixing the positioning of my intake and cleaning the maf sensor then reflash my ots tune. Now i have -4.59 to +10.59 readings and when im driving i have 0.00 af learning 1. Do you think is it normal now? Or should i try cleaning the map sensor too
Cleaning the map sensor wouldn’t hurt. Just be very careful with that bolt on the intake manifold since it’s very easy to strip. Are you sure the spark plugs were properly gapped?
2018wrx just got pro tuned and my af reads -20 and idle and then when I give it gas it goes to normal do you think that’s normal ?
-20 isn’t the worst but I would suggest looking into possible leaks. Here’s the latest issue I found with my car: ruclips.net/video/lDGN-05stKs/видео.html
I just installed my Cobb Sf big intake and IAG AOS and im having code p0171 issue so ill be falling these steps and my AF is high during idle like 30s and 40s.
Willing to bet you have a vacuum leak somewhere, especially after installing the intake and AOS.
@@ronfromportland Yea that was my first thought so Im going to do a smoke test along with going over cleaning the MAP and MAF sensors just to make sure.
Can I refer to this video in a 06 legacy gt? It has the ej 255
Layout will be different but concept should be the same, depending on your intake. I had an 08 Legacy GT but it never had AF issues.
@@ronfromportland mine has af issues, driving it it’s around -7% then when idling it goes down to -13%
@@ronfromportland the problems are kicking up, just got a code for running too lean, along with a code for running too rich. I take that I should be worried about this but what causes this because I really got the 2 codes at the same time?
@@carlitos.1 that I’m not entirely sure since I’ve never had both codes at the same time. Can start by cleaning the MAF extension harness. Those often get corrosion which causes these types of issues.
Good content
Thank you 👏
My af learning is always 0. My corrections is running up to -50%
Af correction is -31 and all he told me is I have a af leak
Are you tuned by Clint Summerfelt?
I am not but I’ve chatted with him here and there.
I just got the code p0171 help
Running lean. Follow the steps and see if that helps.
fk the cobb intake. its junkk. i hate myself for buying it. what a waste
Here was the latest issue with mine ruclips.net/video/lDGN-05stKs/видео.html
Don’t but these, complete waste of time and money
@@kcovac2029 I mean, if that’s how you feel !