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Welcome to M77 Performance — your go-to source for Subaru WRX tuning, e-tunes, flex fuel support, and more. Run faster, smoother, smarter.
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E-Tune Addons
E-Tune Addons
2 products
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Recommended
Full Flex Fuel Add-on
Price
$150.00
Speed Density Add-on
Price
$100.00
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