Possible mis-firing?
 

So once the temps got below 60...I've been having issues whenever I go WOT.

Best way to discribe it is random quick pops when WOT. You can feel the car let up for a milisecond but continue to pull. It pulls hard...just with these random pops. The pops themselves seem to be random...sometimes it will be 3-5 pops in a second...other times its one pop every second. I have "fuel cut" before...and its definatly not fuel cut. This is not a violent thing...every pop you feel a very slight cut in power.

I've put through 3-4 tanks of gas from completely different gas stations...so it shouldn't be bad gas.

I've looked over all type of logs and everything looks "normal". AFR is fine, Fuel Pressure is holding strong, its not registering as "knock"

No CELs...I thought if it was mis firing...I'd get a CEL. Once again, this issue only happens at WOT. Driving around normally shows no issues.

Any ideas? I'm thinking its misfiring...but like I said before...I'm not getting a CEL. The current spark plugs probably have 20k miles on them...2 years old...possibly leaning to maybe replace them.

ive been getting the same thing. I asked DJ about it I will let you know what he says. Im leaning towards plugs IMO

mine starts doing it around 6000 rpm sucks

Yea let me know...mine does it regardless of RPM...its all based on if I'm WOT or not.

Possibly spark blowout

This for sure. Go to 22's for the colder weather

How many miles on your spark plugs and what gap are they?

well on mine, my last log my maf gs seems stuck for a brief second @ 6000-6100rpm. This is where I felt my issue. do your logs have this happening?

I have 22's already

I have been experiencing this also and I have 22's in the car.... It's been fairly cold up here tho...

check the gap

I will take Log and check... It does not happen all the time I go WOT either and has only started since the cold weather started

Gap those plugs down tighter than stock. Check gap. With use, particularly "spirited driving" they will open up over time. Gap to .026-.028".

I installed mine at.028 not even 10K (Km) ago i will pull and recheck the gap... Maybe do the coil stretch trick aswell :D

Just FYI Misfiring is a type A DTC meaning once it reaches the threshold one time it will set the CEL. Misfire codes are p0300=misfire then p0301-304 to denote which cylinder. If you were missing it would have told you by now.
Back to your post I had the same issue over 22psi on my BNR3, did exactly as everyone said... brought in the gap but also added dielectric grease to both ends of the spring. Helped quite a bit but still happens occasionally. Like to completely fix the problem.

@djuosnteisn

ngk step colder fixed my problem........

Spark blowout from gap or too rich AFR is likely the culprit. As the mixture gets denser with colder weather you need a stronger spark or a hotter plug. Narrow the gap as a first attempt.

Can you post a log?

I havent heard of anyone swapping in one step colder plugs to cure a missfire, thats for detonation. A missfire is a cyl that isnt firing so the last thing you need is an even colder plug. You either need to tweak the afr to get a mix that will ignite or a hotter plug that can ignite a rich mix

I don't think its from being too rich. I've been running 12.2 afr for about 10 months now. I've been running ivt 22s gapped to the stock .28 since I had this motor (lol) for about 20k miles. Not sure if its connected, but I seem to get more pops as the motor is driven longer/is hotter.

Ill try to get some logs tonight...but unless I've completely missed something, the logs look completely normal and you can't even tell there is a problem.

Have you cleaned your MAF lately? Mine was hesitating and popping a little prior to cleaning the MAF. Might be worth a shot.

I've had my MS3 for 5 years and it started happening to me at 115,000 mi. My MS3 has never seen a dealer because I do all my own work, but I have no idea what is causing this. At WOT it sounds like an uneven intermittent whooping sound and it loses power as it's happening. I took it to the dealer for the first to see if a tech could tell me what it was, and sure enough it didn't make the sound when they test drove the car. The tech mentioned that my battery was not producing enough voltage and this could be the problem – I don't think so, but it needs a new battery anyways. I'm going to do new plugs and see what that does because I've done just about everything else. The diagnostic cost me $100,00 so to get my moneys worth I had them test the turbo for smoking and he said it was fine after the 20 minute idle test, so at least I'm happy about that. Please post if you find out what is causing this.

The gaps on plugs widens as they are heat cycled. If you haven't checked it in the last 20k miles, it's not a bad thing to do.

Hey all...sorry about disapearing...I've been flying lately and am at land survival now (FUN). Anyways...the day after I posted this...I took a log and go fucking figure...I didn't have any issues.

Since then I've been going WOT often and have not had a pop since. Weather has been warm and cold...so I'm not sure if this is the issue.

Regardless I'm kind of stumped...I havn't had the issue, and I filled up the car with a new tank of gas when the issue went away. It makes me think it was bad gas because this is the exact same symtoms I had once when I had bad gas...HOWEVER I literally put 3-4 full tanks through the car and had the same issue. I could understand it still doing it 1 tank after the bad gas...but 4 full tanks later? I didn't think the shitty gas would stay in the system that long. And to top it off I was driving to different states so I was going to completely different gas stations in different states lol...the chance of me getting 2 tanks of bad gas from different parts of the country is so slim lol.

I'll keep you all posted if there are any changes...if it comes up again I'll def. look at the spark plug gap. Thanks for that tip Lex.