BFI MK3 1.8T Swap Fueling Upgrade (Stage 2 - K04/FT21)

BFI MK3 1.8T Swap Fueling Upgrade (Stage 2 - K04/FT21)

Marsoni

M251S

$300.00

Get it in 3 business days with 1 day shipping. Friday, May 29

BFI MK3 1.8T Swap Fueling Upgrade (Stage 2 - K04/FT21)This kit includes everything necessary to upgrade your existing Black Forest Industries MK3 1. 8t Turbo Kit from a K03 turbo to the K04 F21 kit. Included are 4 upgraded Audi TT 225 Injectors as well as a specific chip for management, custom made by C2 Motorsports.

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Your BFI MK3 1.8T Swap Fueling Upgrade (Stage 2 - K04/FT21) orders ship within 1-2 business days.

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Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

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You'll receive a tracking link by email once your BFI MK3 1.8T Swap Fueling Upgrade (Stage 2 - K04/FT21) ships.

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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Didn't really believe the hype. Did a little research and watched Project Farm and decided to try. Im not a snake oil guy....but I will say my 2013 common rail TDI is quieter and I get a tad more fuel mileage. Does it pay for itself? Well, it does get better mpg, but I feel the reduction in noise most likely relates to less wear and tear and thats good enough for me. Im only using 1oz per fill up (about 14 gallons) so it lasts a very long time. I get 40mpg and im not light footed.

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Reviewed in the United States on April 2, 2026

Verified Purchase

James Jay

Port Orchard, US

★★★★★ 5

It's a spark plug

What i needwd

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Reviewed in the United States on May 27, 2026

Verified Purchase

Grantham, US