M.F. Kustoms LLC

M.F. Kustoms LLC We build custom automotive wiring harnesses, adapters for aftermarket engine management systems and custom electronic controllers.
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06/02/2026

📢📢📢Update on the 1987-93 PnP dash. PCBs are on order and we hope to have them in roughly 2 weeks. Once we get those back we can finalize the housing for them. If all is good, we will start pre-orders. During the next two weeks we are going to start building some harnesses for them and finalize that up as well. Once done we will be able to announce cost(s).

Few more tweaks and our FoxBody Plug and Play Digital Dash setup will be ready. We’ve had to go through many iterations ...
05/07/2026

Few more tweaks and our FoxBody Plug and Play Digital Dash setup will be ready. We’ve had to go through many iterations to get to this point. Our beta testers have been awesome.

Little sneak peek Thursday.





Always fun to get the opportunity to test other ECU manufacturers with our PnP setup. Thanks to the folks that sent this...
02/28/2026

Always fun to get the opportunity to test other ECU manufacturers with our PnP setup. Thanks to the folks that sent this over for us to mess with.





Meet Minnie, our new Shop Boss 🐾
02/23/2026

Meet Minnie, our new Shop Boss 🐾




02/18/2026

A new added option from MF Kustoms for Terminator X adapter systems! You now have the option to run dual widebands into the Holley Terminator X! This gives the user the ability to monitor both banks air/fuel ratios verifying your engine is running in tip top shape. This does not change the Holley systems closed/open loop/learn controls which is still using the one primary wideband sensor but it gives you the benefit for more data if you want it! This option will also include a second wideband sensor in your MF Kustoms Adapter kit from Anderson Ford Motorsport! Available to pre-order now for all 87-93, 94-95 and 96-98 kits.

🚨 Pre-Orders Start Today! 🚨We’re excited to announce the launch of our 1986–93 and 1994–95 Ford Mustang Plug-and-Play ad...
02/13/2026

🚨 Pre-Orders Start Today! 🚨

We’re excited to announce the launch of our 1986–93 and 1994–95 Ford Mustang Plug-and-Play adapters for the Nexus S3 platform.

We’re proud to expand our lineup to support another standalone ECU option, giving Mustang owners even more flexibility when choosing their engine management system.

🏁 1996–98 customers, yours is coming soon! Testing is currently wrapping up, and an announcement will be made in the near future.





🚨 Pre-Orders Start Today! 🚨We’re excited to announce the release of our 1986–93 and 1994–95 Mustang Dual Wideband Adapte...
02/13/2026

🚨 Pre-Orders Start Today! 🚨

We’re excited to announce the release of our 1986–93 and 1994–95 Mustang Dual Wideband Adapter Kits!

Designed to work with Holley Terminator X and X Max systems, this setup uses the same Bosch 17025 (LSU 4.9) sensors and allows you to monitor both banks of your engine.

Holley will continue to use the primary sensor for closed-loop operation and fuel corrections, while the second sensor gives you added visibility to fine-tune each side as needed.

👀 1996–98 Mustang owners, yours is coming very soon!





02/02/2026

Update: Voicemail has been fixed (2/3/2026)

Our voicemail system is down, working on getting it fixed. Sorry folks.

01/30/2026

Heads up! We’ll be a bit short-staffed next week (2/1/2026), so shipping and replies may be slower than normal. Thanks for bearing with us! If you’re at any of the Sick Week tracks, some of us will be there, come say hi!

Starting another 1986-93 Foxbody Mustang injector harness refresh with modern injector connectors and any other broken c...
01/22/2026

Starting another 1986-93 Foxbody Mustang injector harness refresh with modern injector connectors and any other broken connectors replaced. This one will also be replacing the salt and pepper shakers for a modern Deutsch connectors. Allowing us to completely separate out the injectors and sensors, so if the customer ever wants to go from an EV1 injector to an EV6, we can just ship them a true injector harness. Customer will be using our PnP option to go Holley and wanted everything refreshed. Once completed we will post more photos





Address

15009 Manchester Road #259
Ballwin, MO
63011

Telephone

+13145263221

Website

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