andale927's EFR 6758 NC Miata Build

Discussion in 'MSM & Boosted Miata/MX-5 Build Diaries' started by andale927, Jul 26, 2020.

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  1. andale927

    andale927 Silver Member

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    Since this section exists I may as well post. Thread # 2 and EFR build # 2 lol.

    I picked up a 2013 Miata Club (PRHT) with 35k miles about 2 weeks ago. Its super fun and handling is amazing. Its a shame not to make it fast, the chassis feels like it can handle a lot more power. I admit that I picked it specifically for the MZR 2.5L swap potential.

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    Parked next to the speed

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    I took it to an autocross last weekend and it handles pretty awesome, as a bonus the PO had Azeni RTK615K+ tires and RPF1s on it which definitely helps.

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    I also autocrossed the speed3 the next day and it did great. Boost by gear and the quick spooling turbo feel way better on an autox course than the BNR S4 pre motor build. It grips even better than the miata in a corner with no throttle application. Not really a fair comparison, but whatever lol.

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    Did some baseline data gathering as well:

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    ...pretty interesting AFR curve. Crazy to see it makes such little power. The short gearing and light weight really make it feel like a bit more.

    Did a couple Dragy 0-60 runs as well. Couldn't even get under a 7.0s with 1' rollout lol.

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    Also did a 60-100mph pull for comparison purposes against the speed 3:

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    Not too shabby.... only about 4x longer than the speed :risas3: I gotta fix that.
     
    Last edited: Jul 26, 2020
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  2. andale927

    andale927 Silver Member

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    Location:
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    These Fab9 EFR kits are extremely hard to find used, I got really lucky to find this by posting a WTB thread.

    Some parts of the kit arrived, rest are arriving next week:

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    Fab9 3" Exhaust, parts of it are ovaled to fit the transmission tunnel area.
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    Side by side with my EFR7163, looks identical as expected lol:
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    Also ordered a low boost EFR wastegate, on initial install I will be limiting torque to what the OEM clutch can handle (~220Ft-Lbs). Mostly because I just got the Miata 2 weeks ago and have never driven a RWD car before this. Trying to learn and grow with the car before making it a monstrosity.
     
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  3. andale927

    andale927 Silver Member

    Joined:
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    The rest of the turbo kit came in. Its gonna be a while before I actually install all this, but I'm slowly amassing parts.

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    Ordered a used speed 3 MAF sensor for the additional sensor range. Also got my Tactrix Openport 2.0 for ECUflash. The miata community has some crazy opensource tuning support. Looks like they have ALL of the ecu tables exposed... Also flex fuel support with all the blend tables... Insane capability for free software.

    Broke it in with a crackle tune... versatune would be jelly of my opensource crackles. Might as well ruin the cat before it goes in the trash lol.
     
    Last edited: Jul 31, 2020
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