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Magnuson vs Harrop supercharger

Discussion in 'Performance and Tuning' started by nlg4021, Feb 1, 2020.

  1. Feb 1, 2020 at 9:50 AM
    #1
    nlg4021

    nlg4021 [OP] New Member

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    2" level, 34 Mickey Thompson ATZ, tint, Magnuson SC, pedal commander and katzkin leather
    I asked this question in another thread but figured it would get more attention here. The Harrop SC stage 1 kit works with the 2019+ tundra on the stock tune. The attached document explains the finding from Harrop. So my question here is why would this not be the same case for the Magnuson SC?
     

    Attached Files:

  2. Feb 2, 2020 at 4:42 AM
    #2
    Puba

    Puba Not New Anymore

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    I'm the guy that posted the Harrop doc. Maybe your best bet is to call Magnuson and ask them. They are very helpful once you get a live body on the other end of the line.
     
  3. Feb 2, 2020 at 5:59 AM
    #3
    nlg4021

    nlg4021 [OP] New Member

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    2" level, 34 Mickey Thompson ATZ, tint, Magnuson SC, pedal commander and katzkin leather
    It’s been mentioned on here about someone questioning Magnuson and their response is a canned no. That’s why I’m asking here. Maybe someone with some experience can give an answer that would help everyone. Obviously the components between the two kits are similar which yields the question. Thank you for getting that document too!
     
  4. Feb 2, 2020 at 6:10 AM
    #4
    Puba

    Puba Not New Anymore

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    You're welcome. What I haven't see is install instructions for the Harrop. Magnuson has them posted on their website. That may tell part of the story. Harrop wouldn't send them to me-I didn't press too hard...told me they come with the SC. There is a fair amount of OEM hose mods with the Magnuson, the picture of the Harrop stage 1 kit just looked simpler to my un educated eyes.
     
  5. Feb 15, 2020 at 10:30 AM
    #5
    boatzNhoez

    boatzNhoez Owner / Operator of MS MOTORSPORTS

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    Too many hahahaha
    I thought the Harrop S1 kit needs a tune?
     
  6. Feb 15, 2020 at 10:49 AM
    #6
    Midway

    Midway New Member

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    Pre 2018, yes, calibration required
    2018+ No calibration required (Stage 1 only) as long as the vehicle is stock (No headers or engine mods).
     
    Saltyhero13 likes this.
  7. Feb 15, 2020 at 11:07 AM
    #7
    boatzNhoez

    boatzNhoez Owner / Operator of MS MOTORSPORTS

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    Too many hahahaha
    I got a 19 just debating on what route to go. Harrop sounds enticing since magnuson is behind on the 18+ units.
     
    Midway likes this.
  8. Feb 15, 2020 at 1:41 PM
    #8
    Puba

    Puba Not New Anymore

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    If you get the Harrop and install it stage 1, once these guys figure out the Toyota codes, you can always go to stage 2 with a few more parts and a little more work. Chris at Harrop told me there is an outside chance that stage 2 will work on some of the 2019s. My issue so far has been trying to find a shop with a properly equipped HP Tuner (with EMPVI software) to determine if I can go stage 2 or have to stick with stage 1 for now. I have another appt with a shop this coming Thursday and the guy actually knew what I was talking about...that's good, cuz I don't! I have a stage 2 in my possession. If I have to go stage 1, I need to order an 85mm pulley and one or two smaller pcs to complete....but I'll have everything to go stage 2 when they figure it out.
     
    Saltyhero13 likes this.
  9. Feb 15, 2020 at 2:25 PM
    #9
    boatzNhoez

    boatzNhoez Owner / Operator of MS MOTORSPORTS

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    Too many hahahaha
    what kind of parts are we talking?
     
  10. Feb 15, 2020 at 3:06 PM
    #10
    Puba

    Puba Not New Anymore

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    Stage 2 comes with new Harrop high flow injectors, 80mm pulley and a requires a tune. Stage 1 does not need high flow injectors or a tune but comes with a larger 85mm pulley. That's my most basic assessment from what I've learned.
     
  11. Feb 15, 2020 at 4:43 PM
    #11
    boatzNhoez

    boatzNhoez Owner / Operator of MS MOTORSPORTS

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    @Puba

    Oh I was thinking like internals or something like
     
  12. Feb 21, 2020 at 11:45 AM
    #12
    Puba

    Puba Not New Anymore

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    Harrop Superchargers IN STOCK NOW. Call Chris @ Harrop....stage 1 and 2 available. He has five. I have parts for a stage 1 install on the way.
     
    Midway likes this.
  13. Sep 2, 2020 at 11:41 AM
    #13
    Janzuz

    Janzuz New Member

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    Did you install your Harrop sc already? How is it? Did you upgrade to stage 2?
    Thank you
     
  14. Sep 2, 2020 at 12:03 PM
    #14
    Saltyhero13

    Saltyhero13 Throbbing Member

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    Fuel delete mod Cup holder upgrade
    Per Harrop it requires a mod to the fuel system:
    "Thanks for your interest in our products. This kit as stage 1 is available for 2020 Tundra. Our stage 1 kit uses the factory calibration as we've modified parts of the fuel system to suit our supercharger. I've attached a tech article that better explains this, please review it and let me know if you have any questions. "

    It looks like the you modify the factory regulator with a drill bit; may have some ling term reliability concerns.
     

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