2015 WRX stutter with hard acceleration
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This is a discussion on 2015 WRX stutter with hard acceleration within the North Central States forums, part of the Regional Discussion category; I've got about 3K miles on my 2015 WRX. Had noted previously when slightly pushing her in 2nd and 3rd ...

  1. #1
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    Jan 2015

    2015 WRX stutter with hard acceleration

    I've got about 3K miles on my 2015 WRX. Had noted previously when slightly pushing her in 2nd and 3rd gear, that I'd get this slight stutter sensation, almost like the turbo couldn't decide whether to fully kick in or not. Then while driving this evening, I pushed her hard while getting on the freeway, and noted this stutter sensation again while in 2nd, 3rd, and 4th from 3000-5500+ rpm, as if the engine wasn't getting adequate air or fuel. Very non-smooth acceleration. Just filled up with 91 octane. Thoughts?

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  3. #2
    zax is offline
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    Second post.

    My god is the motor smooth. However, I cannot speak kindly about the boost control on the FA20. As boost builds, the car shakes and stutters. Remember those dynographs posted comparing the WRX and WRX STi? Remember how wild the torque curve looked on the WRX? It feels 100x as wild to drive. I am confident that this will be resolved with a 3-port and good boost mapping. Then, we will truly see what the FA20 can do!
    2015 CWP WRX STi ... But how did I get roped back into an EJ motor?!
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