★★★★★ 5
Perfect fit
Fit my car perfectly and good quality filter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
BFI MK3 1.8T Swap Software (Stage 2 - K04/FT21) UPGRADE ONLY
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
BFI MK3 1.8T Swap Software (Stage 2 - K04/FT21) UPGRADE ONLYThis is just the software necessary to upgrade you injectors and turbo using the Black Forest Industries MK3 1. 8T Kit. This software is specific to our kit and custom developed by C2 Motorsports.
Quick Dispatch:
Your BFI MK3 1.8T Swap Software (Stage 2 - K04/FT21) UPGRADE ONLY orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your BFI MK3 1.8T Swap Software (Stage 2 - K04/FT21) UPGRADE ONLY ships.
Need Help?
Questions about BFI MK3 1.8T Swap Software (Stage 2 - K04/FT21) UPGRADE ONLY, sizing, or delivery? We're just an email away.
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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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.7 ★★★★★
Based on 1983 reviews
Sort
Product Reviews
★★★★★ 5
Satisfied with my purchase!
Well made, fit perfect and decent price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 1, 2025
★★★★★ 4
New
Looks great no issues with the product am happy with it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 3, 2025
★★★★★ 5
Convenient and economical
I can't believe that I've paid $60+ for years to have my filter replaced. The money that I've spent is mind blowing.
The replacement actually takes 2 minutes! Quality is amazing and it lasts just as long (maybe longer) the dealer's and repair shops version.
Helpful tip: Do it yourself for far less.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 17, 2024
★★★★★ 5
That it fits
Just as good as the factory and over half cheaper
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
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