Vibration and deep sound at WOT low RPM TP stage 1 map
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This is a discussion on Vibration and deep sound at WOT low RPM TP stage 1 map within the Tuning: Electronic Engine Management forums, part of the Tech & Modifying & General Repairs category; Hi, I run the torqued performance stage 1 map on my WRX 2011 for a month. This just amazing. However, ...

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    Vibration and deep sound at WOT low RPM TP stage 1 map

    Hi,

    I run the torqued performance stage 1 map on my WRX 2011 for a month. This just amazing. However, At low RPM (2000) at wot when I build boost until 3700 rpm there is a strong vibration with a big noise. No exhaust leak, and the bolts of the downpipe are good.

    any idea?

    thank you

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    Sounds likes something your girlfriend would enjoy.
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    Quote Originally Posted by zax View Post
    Sounds likes something your girlfriend would enjoy.
    Actually yes.

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    Then I vote keep it!
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    \_(ツ)_/ Rambo's Avatar
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    What gear are you pulling in? It sounds to me like you're lugging down the engine until you hit boost and the torque curve catches up.

    Also: to Zach.
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    I happen just in 4t and 5th gear. When going wot at low rpm.

    Yes Zach is the man

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    \_(ツ)_/ Rambo's Avatar
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    Quote Originally Posted by rickson View Post
    I happen just in 4t and 5th gear. When going wot at low rpm.
    Well there you go. I never shifted into 4th below 50-ish mph and at least 3.5k rpms.
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    Why not?

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    Quote Originally Posted by rickson View Post
    Why not?
    Because I prefer my car to move. You're not even hitting boost below that point, so why shift?
    Isaac -- 2003 WRX sedan Stg II - Gave its life for mine 6/2013.
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    This is just a way to drive. I read that going WOT at low RPM in 4th or 5th could be bad for cars. True?

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    Quote Originally Posted by rickson View Post
    This is just a way to drive. I read that going WOT at low RPM in 4th or 5th could be bad for cars. True?
    It could be. Lugging can cause sporatic knock issues, and puts undo stress on the connecting rods. Why are you shifting so early? I doubt you'll see much in the way of fuel savings, if that's your goal.
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    Quote Originally Posted by Rambo View Post
    Because I prefer my car to move. You're not even hitting boost below that point, so why shift?
    I usually start my car out in like 3rd or 4th. Why shift at all? Rambo is just a Moody Judy. You'll be fine.

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    You shouldn't be WOT at low rpm in high gears. Not good for the motor. The low rumble and the vibration is shock on your drive train and stress to your engine.

    It's like starting out in 3rd, yeah you can feather you clutch and move your car, doesn't mean you should.

    Just double clutch and Down shift. Get to a higher Rpm then upshift.

    Just my experience and opinion.

    Sent from my Fone

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    Quote Originally Posted by wreckingball man View Post
    I usually start my car out in like 3rd or 4th. Why shift at all?
    Isaac -- 2003 WRX sedan Stg II - Gave its life for mine 6/2013.
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    Quote Originally Posted by Rambo View Post
    It could be. Lugging can cause sporatic knock issues, and puts undo stress on the connecting rods. Why are you shifting so early? I doubt you'll see much in the way of fuel savings, if that's your goal.
    Actually at 60mph I am around 2500rmp. in 5th so .... At wot (for any reason...) I go from 2500 to 3500 where I hit 18psi and herd and feel the vibration.

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