2015 wrx boost question
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This is a discussion on 2015 wrx boost question within the Everyday Impreza Talk forums, part of the Community - Meet other Enthusiasts category; So ive had my 2015 for almost 2 months...i traded in my 2012 WrX. This car seems much much slower....now ...

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    2015 wrx boost question

    So ive had my 2015 for almost 2 months...i traded in my 2012 WrX. This car seems much much slower....now if i step on it in 1st gear....it will put me back in my seat....just like in the 2012...however this is the only gear it will do so...

    In my 2012 if i was cruising at 20 mph in 2nd gear and stepped on it...turbo would spool up and boost kick in and id launch forward and get put back in my seat...

    This does not happen in my 15..ive tested this several times....all that hAppens is rpms go up...and i accelerate but not boost feeling (we all know what it feels like) it wont put me back in my seat...it only will in 1st gear...and sometimes in 3rd...

    This car feels super slow and its very frustrating. And i just dont know if this is just how this car is now or what....i miss feeling exhilarating when stepping on it. Anyone have any thoughts on this?


    Outside the 6 speed and harmon karmon stereo im seriously missing my 2012 now.....it isnt right

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    I drove my buddy's '15 and pulled through the first three gears without problems.

    Have you verified that you're not boosting by watching the boost gauge in the problematic gears/areas?

    It's under warranty so take it to the dealer if it is not boostin'.

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    zax
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    It's in your head. The torque surge of an old-school turbo car makes the car FEEL faster. In reality, the 2015 is just as quick, possibly even quicker.
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    Registered User Ghostie's Avatar
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    What are your numbers for boost through the gears?
    My '15 pushes me back in my seat plenty well enough.
    My peak boost right now it 19.8psi.
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    Quote Originally Posted by Ghostie View Post
    What are your numbers for boost through the gears?
    My '15 pushes me back in my seat plenty well enough.
    My peak boost right now it 19.8psi.
    Please ignore the peak boost statement. You should be looking at the steady state boost. At what altitude do you reside?
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    ^ zax is right. People have hit over 20 pounds depending on temp and altitude and some have hit way under
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    Registered User Ghostie's Avatar
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    Quote Originally Posted by zax View Post
    Please ignore the peak boost statement. You should be looking at the steady state boost. At what altitude do you reside?
    I'm not using peak boost for much of anything. BUT, it's a really quick way to check and see if you are able to hit in the ball park for boost on these cars. Obviously it's better to watch the gauge and get a better, whole picture but often times while driving I have to watch other things...like the road.
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    For External Use Only irickchad's Avatar
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    That's the glory of twin scroll. It may feel slower on the butt dyno, like Zax said, when in reality it's just due to a smoother power delivery.
    The Anti-N00b. Use "Search", YES, you need a tune. NO, you don't need a BOV. Don't try to make you car shoot fire, and change your freaking oil.

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    Registered User Exhale's Avatar
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    I get sucked into my seat. I know peak isn't much of a determining factor but my peak boost has gotten over 22. I usually reset it every drive and I'm around 18 or so, which is where I'm usually floating. I haven't had any issues in power delivery or boosting so far in my 15

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    I hit 22.5 psi at the drag strip 14.05 @ 98. Mph 60ft time 1.83

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    Quote Originally Posted by zax View Post
    At what altitude do you reside?
    Altitude seems to affect the car a fair bit. Either way, a good tune will make a huge difference (if you don't care so much about the warranty).

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    something else forever Germz to Japz's Avatar
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    completely sorry if this is "taking over" the thread but what boost level (in PSI of course) should a stock 2014 wrx have?
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  14. #13
    zax
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    Quote Originally Posted by Germz to Japz View Post
    completely sorry if this is "taking over" the thread but what boost level (in PSI of course) should a stock 2014 wrx have?
    2014 Subaru WRX and STI research page: WRX, Premium, Limited, and STI, STI Limited, 4 door sedan, 5 door hatchback

    14.2 PSI
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    Quote Originally Posted by Exhale View Post
    I get sucked into my seat. I know peak isn't much of a determining factor but my peak boost has gotten over 22. I usually reset it every drive and I'm around 18 or so, which is where I'm usually floating. I haven't had any issues in power delivery or boosting so far in my 15
    I should expand on what Zax was saying about the stock tune- you briefly spike at a much higher figure than target boost, but it's the figure which you sustain for any period of time which is important. Unfortunately the spike registers as a peak boost figure so you can't use the gauge to determine what you are really hitting at top. Target is 15.9 I believe, and that will be adjusted down in colder weather and at altitude.

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