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After my throttle body install....

This is a discussion on After my throttle body install.... within the General Help forums, part of the LSx Technical Help Section category; installed a shaner S3, everything works fine, car runs great with it. The only issue I am having is that ...

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    Senior Member TransAm11973's Avatar
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    After my throttle body install....

    installed a shaner S3, everything works fine, car runs great with it. The only issue I am having is that at start up for like a minute or so there is this sort of whistling coming from the intake. It never did this with the old TB, mind you it does it for a minute or less and stops. Just wanted to see if anyone had something similar happen or any info. Thanks

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    Senior Member ss~zoso~ss's Avatar
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    i've heard something like this happening if your TB gasket is not alligned, its the gasket on the intake manifold that matches up with the TB, you could try taking the TB off and putting it back on

    or you could call Mark, he'd be glad to help ya!

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    Senior Member karpetcm's Avatar
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    Funny thing, this is the first ive heard of the whistle sound from another person. When i had my Brand new 01 SS back in 01 as soon as i changed the lid and filter it made this loud whistle noise and then after a minute would disappear. It sounded cool especially when you tap the throttle. No one had any idea as to what i was talking about, i didnt have a leak anywere just swapped the lid and put in a K&N. I was told it flows more air so it'll make that noise but definitly doesnt happen very often.

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    Veteran 0rion's Avatar
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    probably just the amount of air you're flowing. Mine does pretty much the same thing. On start up it sounds like a hoover vacuum cleaner that's run by a jet engine. I kinda like it.

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    Senior Member TransAm11973's Avatar
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    Quote Originally Posted by 0rion View Post
    probably just the amount of air you're flowing. Mine does pretty much the same thing. On start up it sounds like a hoover vacuum cleaner that's run by a jet engine. I kinda like it.
    thats exactly what it sounds like.....only for a minute or so and then gone, maybe its just when the rpms settle down

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    Veteran 0rion's Avatar
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    Quote Originally Posted by TransAm11973 View Post
    thats exactly what it sounds like.....only for a minute or so and then gone, maybe its just when the rpms settle down
    there is extra start up air that's added on start ups and it decays out

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    Senior Member TransAm11973's Avatar
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    Quote Originally Posted by 0rion View Post
    there is extra start up air that's added on start ups and it decays out
    makes sense because it doesnt do it after the engine is warm and i have shut the car off but then start it back up

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    Quote Originally Posted by 0rion View Post
    probably just the amount of air you're flowing. Mine does pretty much the same thing. On start up it sounds like a hoover vacuum cleaner that's run by a jet engine. I kinda like it.
    Exactly

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    Homebrew Master irishpenguin13's Avatar
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    it happened on my BBK TB, sounded like a turbo goin down the road.

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    Member jambofla's Avatar
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    same here on a 90 mm Nick Williams and 90 mm FAST LSX

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    Senior Member ss~zoso~ss's Avatar
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    Quote Originally Posted by 0rion View Post
    there is extra start up air that's added on start ups and it decays out
    oh, ok, in this case you may be hearing the AIR pump

    its supposed to dilute the exhaust emissions due to the CAT not being warmed up

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    Impounded
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    <-- no emission here

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    Senior Member ss~zoso~ss's Avatar
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    no cats here! although it may appear that i have a cat

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    Impounded
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    Quote Originally Posted by ss~zoso~ss View Post
    no cats here! although it may appear that i have a cat
    Same

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    Senior Member TransAm11973's Avatar
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    same hahaha

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    TJEA Retirement Home Dr.Crash's Avatar
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    Quote Originally Posted by ss~zoso~ss View Post
    no cats here! although it may appear that i have a cat
    what are these "cats" you speak of?

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    Member c5z28's Avatar
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    Quote Originally Posted by Dr.Crash View Post
    what are these "cats" you speak of?
    I will refer you to the California ref he should be able to fill you in

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    TJEA Retirement Home Dr.Crash's Avatar
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    Quote Originally Posted by c5z28 View Post
    I will refer you to the California ref he should be able to fill you in
    I am a ref! so good luck

  19. #19
    Senior Member ss~zoso~ss's Avatar
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    Quote Originally Posted by Dr.Crash View Post
    what are these "cats" you speak of?
    cats, they keep burglars away from the car

    I only have a picture of one in the window!

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    TJEA Retirement Home Dr.Crash's Avatar
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    Quote Originally Posted by ss~zoso~ss View Post
    cats, they keep burglars away from the car

    I only have a picture of one in the window!
    oh ok i see now. Thanks for helping me out on that one.

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