I have a 2018 Subaru WRX 6MT and my car has lately been very jerky when I press the gas in every gear. It doesn't look like my boost is cutting out or my clutch is slipping. The spark plugs have been replaced 3 times because I thought it would fix the issue. And I have cleaned out my intake filter. The problem goes away when I temporarily change the tune on the Cobb Accessport but it goes back to being jerky after roughly a day of driving it. Same thing happens when I go back to my base tune (uninstall the tune from accessport.) I recently changed the battery of my car and the problem when away for roughly a week and then the jerky feeling came back. I've tried everything to spark plugs and fuel injectors and taking it to the mechanic. I don't really have any mods on my car, just an ETS intake but this problem has been happening even before I got it. I also notice that after driving for a long period of time on the highway non stop, It drives normally for a bit then the jerky acceleration comes back. Anyone have any idea how I can fix this?
JustinFlorencio
Very expensive choice to hit the spark plugs multiple times.
Do you have an ots accessport tune? What are you monitoring if so?
Could be dirty MAF and MAP sensors, could be a vacuum leak, could be an issue with the turbo, could be alot of stuff besides the plugs.
Personally my fuel injector was giving bad detonation timing and it the end was the wire harness not the fuel injector itself.
Edit: completely missed the intake your running. Zax is prob right on the money.. all ot sounds you you keep doing is ecm reset and the car re learns the parameters and starts messing up again once it gets out of its lamens settings
Do you have an ots accessport tune? What are you monitoring if so?
Could be dirty MAF and MAP sensors, could be a vacuum leak, could be an issue with the turbo, could be alot of stuff besides the plugs.
Personally my fuel injector was giving bad detonation timing and it the end was the wire harness not the fuel injector itself.
Edit: completely missed the intake your running. Zax is prob right on the money.. all ot sounds you you keep doing is ecm reset and the car re learns the parameters and starts messing up again once it gets out of its lamens settings
There is no OTS maps from cobb ap for an ETS intake, even if you said you had the problem before installing the intake, your just adding another problem because the intake will cause you more problems.
An improper tune for the intake will cause that jerking engine underload.
Whatever you will do won’t fix the problem until you protune for that specific intake that isnt stock.
Sent from my iPhone using Tapatalk
An improper tune for the intake will cause that jerking engine underload.
Whatever you will do won’t fix the problem until you protune for that specific intake that isnt stock.
Sent from my iPhone using Tapatalk
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