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Whining Noise on Start Up - SAIS Bypass Kit?

Discussion in '1st Gen Tundras (2000-2006)' started by Bulldog_tundra, Mar 6, 2020.

  1. Mar 6, 2020 at 9:43 PM
    #1
    Bulldog_tundra

    Bulldog_tundra [OP] New Member

    Joined:
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    2006 Double Cab
    Bilstein 5100 (Top Notch Front) 1” Rear Block Flowmaster 40 w/ 3” Tip Bumperplugs Front Plate Delete
    Well, just recently started noticing a high frequency whine, high pitch noise when firing up my ‘06 from a cold start, sounds like a vacuum shutting off after 30 seconds or so. Research says SAIS failure or, at the very least, on its way out.

    Before I get a Check Engine Light or limp mode, should I go ahead and do the bypass kit? If so, is Hewitt-Tech the best option?

    Price isn’t a big concern, I’ve put so much into this truck I’m not cheaping out at this point, just want to do it right and move along.

    Hewitt-Tech kit:

    https://hewitt-tech.com/store/index.php?l=product_detail&p=12

    Thanks in advance!
     
  2. Mar 7, 2020 at 4:33 AM
    #2
    BubbaW

    BubbaW Saw it right off

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  3. Mar 7, 2020 at 6:32 AM
    #3
    tvpierce

    tvpierce Formerly New Member

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    I squirreled that away too -- even thought I don't have a SAIS on my 2000.

    Those DIY instructions will save $160 over the kit.
     
  4. Mar 7, 2020 at 6:35 AM
    #4
    Professional Hand Model

    Professional Hand Model A.K.A ‘Golden Hands’

    Joined:
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    Hand Protectors
    From readings, that looks like the proper kit. Best thing is do it right the first time as you’ve put so much into everything else. You are smart by tackling this issue now.
     
    Bulldog_tundra [OP] likes this.
  5. Mar 7, 2020 at 7:25 AM
    #5
    revtune

    revtune New Member

    Joined:
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    Dane
    Houston Texas
    Vehicle:
    2006 Tundra 4.7 AC 2wd
    2006 Tundra: Stock air intake 3 inch catback Magnaflow 13742 2.5 inch front lift 1.5 inch rear blocks 2014 sr5 4Runner wheels (17x7) 1.5 inch hub centric wheel spacers p285/70/17 Nitto Terra Grappler G2 Weathertech floor liners

    This is the one I’ve got on my 2006.

    https://hewitt-tech.com/store/index.php?l=product_detail&p=12

    It works great and prevents your truck from going into limp mode and eliminates the air injectors.

    I also added this proxy pack to eliminate any check engine lights from the secondary air system.

    https://hewitt-tech.com/store/index.php?l=product_detail&p=17

    Both of these items are plug and play.

    Here is a video of the bypass install.

    https://youtu.be/WDzNfW7Ti5g

    Hope this helps.
     
  6. Mar 7, 2020 at 9:59 PM
    #6
    artsr2002

    artsr2002 2005 Tundra DC SR5

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