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Anyone running the stage1 blower kit from harrop?

Discussion in 'Performance and Tuning' started by Davetheplumber321, Mar 18, 2021.

  1. Mar 18, 2021 at 6:24 AM
    #1
    Davetheplumber321

    Davetheplumber321 [OP] New Member

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    I talked with someone from harrop over the phone yesterday and their kit apparently works with 2019+ models by supplying a fuel pump replacement and regulator with the kit, keeping the AFR within stock parameters allowing the stock ecu to dial it in. Has anyone tried this? Do us 2019+ models still get the same hp/tq increase?
     
    dorton likes this.
  2. Mar 18, 2021 at 7:14 AM
    #2
    Davetheplumber321

    Davetheplumber321 [OP] New Member

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    This is the install file I was sent as well I figured it was an appropriate place to put it.
     

    Attached Files:

  3. Mar 18, 2021 at 7:30 AM
    #3
    Saltyhero13

    Saltyhero13 Throbbing Member

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    My understanding is Stage 1 does not require a tune. Fuel quality is the only constraint on getting their numbers.

    I ordered one for my 2020, I won't have it installed until late spring/early summer. When I reached out to Harrop asking about support for the 2020s this was their reply:

    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.

    I've attached the file they supplied as well. Edit: I had to remove the file due to the "Commercial in Confidence" markings. If you reach out to Harrop USA they will provide you the document I wanted to share.

    Hope this helps
     
    Last edited: Mar 18, 2021
  4. Apr 8, 2021 at 10:49 AM
    #4
    Downytide

    Downytide New Member

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    A thought on that statement from Harrop, if stage 1 requires no tune, wouldn't technically Magnuson's kit work on 2020+ trucks as well? consider TVS1900 pushes less air, thus less likely to run lean?
     
  5. Apr 8, 2021 at 12:25 PM
    #5
    Saltyhero13

    Saltyhero13 Throbbing Member

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    Good question since they are both TVS type blowers.
     
  6. Apr 19, 2021 at 2:13 PM
    #6
    Platinum714

    Platinum714 A--A

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    I called up a performance shop in orange, CA to see if they would install a Harrop supercharger. They stated they have done a bunch of magnuson tundras and feel comfortable doing it. They double checked to see whether the ecu for my year was available or not (2019 isn’t yet) and stated that without a tune it wasn’t appropriate for Harrop to sell it that way. It sounded like I will have to wait until the ecu is available before they would install and they would be more comfortable with their work warranty also. The CARB EO states no tune is required but would shops be willing to take that risk installing without a tune. And then if I do get a tune, then I void the CARB EO??!!!
     
  7. Apr 19, 2021 at 4:42 PM
    #7
    Saltyhero13

    Saltyhero13 Throbbing Member

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    @Platinum714 If you want a blower with a tune someone posted their install and some pulls over on reddit with the Maggie installed on their 2019. The installer used OV Tune for the calibration.

    If you reach out to Harrop they'll send you their tech guide. They recommend a tune in their documentation but explain why it isn't necessary for their Stage 1 kit.

    "To summarize, Harrop recognise a tuned option would be best. Where one does not exist, Harrop opted to test the operation of the stock tune with the Supercharger and are content that the modest boost upgrade of the Stage 1 kit works within the limits of the factory tune. The parameters of the stock tune extend satisfactorily to within the increased airflow of the upgrade as is evident by timing and knock control when combined with 98RON (93 AKI) fuel, component enrichment protection, increased shift torque reduction and the absence of modification induced MIL light from increased air flow.
    Very recently, tuning has become available on some 3UR-FE ECUs so further analysis of higher output and the respective limits became possible. The results were that re-calibration of 3UR-FE Vehicles was not advantageous for the Stage 1 kit (Ø85mm pulley), as long as the Harrop Supercharger kit is Installed as supplied, completely and without further modifications."


    Maybe someone with experience like @ViktorG can explain if and why a tune is required for the base Harrop Stage 1 and how safe it is without one.
     
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  8. Apr 20, 2021 at 9:06 AM
    #8
    nobodyintexas

    nobodyintexas New Member

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    I'm getting the Stage 1 Harrop installed in the next 2 weeks.

    I'll let y'all know if I blow up.
     
  9. Apr 20, 2021 at 10:01 AM
    #9
    Saltyhero13

    Saltyhero13 Throbbing Member

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    Me too. Dropping off May 1st. Should get it back by the end of the week.
     
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  10. Apr 29, 2021 at 5:28 PM
    #10
    Platinum714

    Platinum714 A--A

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    Will you guys be getting the ovtune after supercharging? Will the tune be similar between TRD and Harrop?
     
  11. Apr 29, 2021 at 5:44 PM
    #11
    Saltyhero13

    Saltyhero13 Throbbing Member

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    Nope. I’ll never put any OVtune product on any of my vehicles. If the blower doesn’t run properly it goes back on the shelf until another tuner company cracks the 2020 ECU.

    As to your second question I doubt they are interchangeable tunes. I’ve not heard of people putting Maggie tune profiles on their Harrop builds. If it were possible the Harrops for 2019s would be supported; Harrop could just copy the Maggie tune
     
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  12. Apr 29, 2021 at 5:51 PM
    #12
    Platinum714

    Platinum714 A--A

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    That’s interesting to know. Have you had a bad experience with Ovtune?

    Yeah I wasn’t sure when I saw that they offered tunes for supercharger that maybe they could be used for the Harrop. Glad I asked.

    i just got my fuel pump recall completed so getting it ready for install. Pretty soon mine should be shipping soon!
     
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  13. Apr 29, 2021 at 8:00 PM
    #13
    Saltyhero13

    Saltyhero13 Throbbing Member

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    Keep in mind most folks (from what we can see) seem happy with OV. Ask your installer. Unless you are tuning it yourself it is their opinion that matters.

    I didn't get that far. When I was shopping for blowers and an installer several of the shops I talked to strongly recommended against using the product.

    As to not appear like I'm talking ship about one of the beloved vendors here, there is a big OV tune development thread you can read through. If they didn't nuke all the negative comments and exchanges you'll see why I won't do business with them. Same thing over on the Taco forums. There are some folks over on reddit that have used them for their Maggie install on a 2019 Tundra, you can ask for their second opinions if you like (there are two Tundra subreddits).

    I really don't know the answer for sure. I'm have an electronics and computer background, I've cross trained into some mechanical work but by no means an expert in tuning.

    I'm not sure why Harrop doesn't support their blower with OV Tuner; Magnuson switched shortly after they cracked the 2019s (their 2018s and below use HP Tuner). So I don't know for sure if they are interchangeable or not. Performance wise the Maggie is about the same as the Stage 1 Harrop but I'm sure there are some nuanced differences besides the volume they can push. I know there was a video comparison of the two bolt on systems exploring build quality and other aspects.

    I'm stoked for you! If all goes well I'll be joining you in the S/C club by next Friday.
     
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  14. Apr 29, 2021 at 8:39 PM
    #14
    AZTundra

    AZTundra No Longer a New Member

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    Almost 12k miles on my Magnuson and still brings smiles.

    20200221_175057.jpg
     
  15. Apr 30, 2021 at 4:35 AM
    #15
    nobodyintexas

    nobodyintexas New Member

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    I'm skipping the tune on my Harrop stage 1 because of the following from Harrop:


    To summarize, Harrop recognise a tuned option would be best. Where one does not exist, Harrop opted to test the operation of the stock tune with the Supercharger and are content that the modest boost upgrade of the Stage 1 kit works within the limits of the factory tune. The parameters of the stock tune extend satisfactorily to within the increased airflow of the upgrade as is evident by timing and knock control when combined with 98RON (93 AKI) fuel, component enrichment protection, increased shift torque reduction and the absence of modification induced MIL light from increased air flow.

    Very recently, tuning has become available on some 3UR-FE ECUs so further analysis of higher output and the respective limits became possible. The results were that re-calibration of 3UR-FE Vehicles was not advantageous for the Stage 1 kit (Ø85mm pulley), as long as the Harrop Supercharger kit is Installed as supplied, completely and without further modifications.

    So, in late May....I'll enjoy forced induction. That is until 2020 ECU's can be accessed by HPTuners, and then Stage 2 will find a welcome home.

    How much should I budget for rear tires? <smiling like a jackass eating bed-slats>
     
  16. May 12, 2021 at 4:28 AM
    #16
    nobodyintexas

    nobodyintexas New Member

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    just pondering here....

    from reading Harrop's whitepaper....

    can one add HP to a stage 1 Harrop by increasing the octane?

    Stage 1, on 93 octane, appears to knock less than a NA 5.7 on 87 octane

    so would 95 octane knock even less and allow more timing advance?
     
  17. May 12, 2021 at 8:38 AM
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    Saltyhero13

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    I wouldn't expect a large amount of additional HP by switching to 95 from 93 but its possible the 5.7 is more responsive to the change in fuel. Im interested in hearing what the pros think.
     
  18. May 12, 2021 at 9:04 AM
    #18
    armyoffoo

    armyoffoo New Member

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    The ECU won't advance the timing due to better fuel, but it will retard timing less with better fuel.
     
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  19. May 19, 2021 at 4:36 PM
    #19
    HonorNotInner

    HonorNotInner New Member

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    @Saltyhero13 did you get your stage 1 installed?

    @nobodyintexas I assume you're in Tejas? What shop are you having do the install?
     
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  20. May 19, 2021 at 4:50 PM
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    Saltyhero13

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    Yep! Barring any issues I pick up this weekend!
     
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  21. May 19, 2021 at 5:04 PM
    #21
    Vizsla

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    :popcorn::burnrubber:
     
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  22. May 19, 2021 at 5:38 PM
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    Downytide

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    This forum is seriously full of temptations.

    Ordering day: "oh gosh, I'll just do tires since it has decent suspension, yes, makes sense, I will not do anymore mods"
    First week: "hey intake is on sale"
    Second week: "hey, look at those cool trail boxes"
    third week: "look at those cool tie downs"
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    2 months: "I need to re-gear, yes, to tow the trailer better, yes, I need the transmission cooler kit too"
    now: "stupid neighbor with that TRX, I can build my own Tundra version, its just widebody and 700hp right"
     
  23. May 19, 2021 at 5:39 PM
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    Platinum714

    Platinum714 A--A

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    I have my Harrop appointment for early July!
     
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  24. May 20, 2021 at 3:27 AM
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    nobodyintexas

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    Harrop recommended Peitz Performance. I should be scheduling next week.
     
  25. May 20, 2021 at 3:28 AM
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    nobodyintexas

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    details...we will need the gory details.
     
  26. May 20, 2021 at 12:18 PM
    #26
    OhEmmBee

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    Following. so far I only know 2 (only one with a 2020 Tundra) people with Harrop SC and it'son my list to get one. One guy in Denver runnin4tacos has one installed on their 2020 Tundra. Should give them a call or email about one
     
  27. May 21, 2021 at 5:28 AM
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    HonorNotInner

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    Are there any dyno numbers for a stage 1 that has no tune? Because I feel like all the ones I’ve seen people or harrop post still had HP tune. (I think) if not, one of you guys should dyno just to see where the power level is at without a tune.
     
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  28. May 21, 2021 at 5:35 AM
    #28
    Saltyhero13

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    I'll post the before and after #s when I get that information. I expect the numbers will be close to the Maggie
     
    Last edited: May 21, 2021
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  29. May 21, 2021 at 5:38 AM
    #29
    Jbehredt

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    They’re off 70th and Washington. The tundra is parked out front during business hours. I take the long way home to avoid seeing it every day. Too much temptation.
     
  30. May 21, 2021 at 5:49 AM
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    armyoffoo

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    Stock with no SC: 310/377

    The 2650 gets it to 492/475 on a stock 2018, their stage 2 kit gets it up to 513/514 at 8.6psi

    Stock tune:
    https://www.youtube.com/watch?v=UBfW3qqxgjY

    HP Tuners tuned Stage 2:
    https://www.youtube.com/watch?v=Oo8d1e-1yJQ

    My Truck, 2650 with 85mm pulley, upgraded fuel system, larger intake, full exhaust, custom HP Tuners tuned
    upload_2021-5-21_7-45-46.jpg
     
    Last edited: May 21, 2021

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