BNR S2

Discussion in 'Mazdaspeed 3/6 Engine' started by Mtnbker3531, Sep 12, 2021.

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  1. Mtnbker3531

    Mtnbker3531 Gold Member

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    Ok first of all I apologize if this has been answered somewhere and my search skills suck. I feel like this topic has been beat to death in a way but I have not found a good answer.

    I have a 13 Speed3 that is in need of a turbo, still on the stock K04 @139,000 Miles!
    Car is using oil and plugs show no signs of oil fouling. Compression is 185-190 across all cylinders, PCV valve is a year old and was done when I did my valve clean.

    I initially was going to just do a BNR S1 as I am not tuned and don't plan to until next spring. I am still on the stock HPFP and will do Corksport internals and the rebuild kit when I install the new turbo. I bought the car used in 14 with 13,000 miles and the original owner had installed a Corksport intake. I have never had an problems with the car and it runs great other than oil use as of late. The only other mod is a cat back but I am still on the stock DP and midpipe.

    My question for everyone is can I safely run the S2 on the stock tune with a HPFP upgrade?
    My goals for a tune would just be to optimize everything and stay conservative and hopefully pick up some safe HP.

    This car is my DD and I want to keep it around for quite some time as I am very happy with the car and honestly enjoy taking care of it and replacing parts as needed.
     
  2. Easter Bunny

    Easter Bunny Professional Engineer Platinum Member

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    No

    At a minimum you need a hpfp and tuning solution to install that turbo. I would suggest just putting oil into it until you are ready to do as above and then once you are buying those parts I would go all the way to the bnr s3.
     
    Easter Bunny, via a mobile device, Sep 12, 2021
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  3. Easter Bunny

    Easter Bunny Professional Engineer Platinum Member

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    Hpfp S3 and tune
     
    Easter Bunny, via a mobile device, Sep 13, 2021
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  4. L337TurboZ

    L337TurboZ Master Technician Silver Member

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    I agree with EB. An S3, HPFP and tune will definitely wake the car up. The S1 is fine as a basic upgrade but I still felt it lacked the top end power. I noticed a massive difference going to a larger turbo.

    It depends on your goal for the time being. If you want to keep the car on the road and not kill your wallet this turbo is available.
     
    L337TurboZ, via a Motorola device, Sep 13, 2021
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  5. Mtnbker3531

    Mtnbker3531 Gold Member

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    L337, again I appreciate the offer but I think I'm going to go with a new S2 and a tune I'm not really looking to make a lot of power but if I can pick up another 30-50 on a safe conservative tune I'd be fine with that. I can't really think of any down side to running a safe tune and a more efficient turbo.
     
    Mtnbker3531, via a mobile device, Sep 14, 2021
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  6. Lilloui05

    Lilloui05 Silver Member

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    I enjoyed my s2 for the couple months I was running it. It was nice not needing more mods like bigger intake and other things. First mods to my ms6 were bnrs2, hpfp internals, 3" downpipe, access port, freektuned. It really did wake the car up.
     
    Lilloui05, via a mobile device, Sep 14, 2021
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  7. Mtnbker3531

    Mtnbker3531 Gold Member

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    What kind of boost where you running on the S2?
     
    Mtnbker3531, via a mobile device, Sep 15, 2021
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  8. Lilloui05

    Lilloui05 Silver Member

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    My last datalog shows 21.3 lbs peak boost
     
    Lilloui05, via a mobile device, Sep 15, 2021
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