M.F. Kustoms LLC

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M.F. Kustoms LLC We build custom automotive wiring harnesses, adapters for aftermarket engine management systems and custom electronic controllers.
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It’s official, we will be taking one of our test mule cars to Sick Week 2027!!! Which one will it be!?!?
10/10/2026

It’s official, we will be taking one of our test mule cars to Sick Week 2027!!! Which one will it be!?!?

10/09/2026

We are working quickly to get our Stepper IAC harnesses back in stock. Goal for those is mid next week. As for the Remote TFI harnesses we will have limited availability mid next week as well. We are waiting on our vendor to get us the TFI connectors we were shorted. Sorry for the delay everyone. Have a great weekend.

Quick shoutout to Jeremy Dover for hooking is up with some Foxbody gauge cluster connectors. Time to get to building ano...
10/07/2026

Quick shoutout to Jeremy Dover for hooking is up with some Foxbody gauge cluster connectors. Time to get to building another test harness and display harness for our PnP products.

Available now in limited quantity. People have asked for a T-shirt, so here it is. If a size shows “Out of Stock” please...
09/29/2026

Available now in limited quantity. People have asked for a T-shirt, so here it is. If a size shows “Out of Stock” please use the “Notify Me” so we can determine how many we should order on the next round. Link in the comments.


09/25/2026

PSA: We will be closing around 11am (Central Time) today, September 25th. Any orders placed today will ship early next week. Have a great weekend everyone!

Little something, something we do from time to time. This is going out to a fellow Mustang shop. It’s our custom 60 pin ...
09/23/2026

Little something, something we do from time to time. This is going out to a fellow Mustang shop. It’s our custom 60 pin (EEC-IV) breakout box. It also has an OBD2 port (what!?!?) for live data viewing for 94/95 Mustang GT/Cobras. We only make a few a year and send them out to shops for an easy way to be able to read sensor data without back probing. One of our ways of giving back to the community. Figured you would all enjoy.

Our bone stock 1999 Mustang Cobra on the Dyno out at The Horsepower Factory. Having a great time out at Ford Takeover 20...
09/11/2026

Our bone stock 1999 Mustang Cobra on the Dyno out at The Horsepower Factory. Having a great time out at Ford Takeover 2026 by Foxcast Media. Hope to see some of you all at the pre-meet today and full event tomorrow!




09/10/2026

We are in Jackson, TN this week attending Foxcast Media Ford Takeover 2026. If you are in the area swing by our booth on Saturday and come check out all the activities going on.

During this time, there will be delays in replies to emails and direct messages, any orders coming in this week will start going out on Monday.

Production is under way. Harnesses are done and going through another round of testing. Building out the custom PnP conn...
08/13/2026

Production is under way. Harnesses are done and going through another round of testing. Building out the custom PnP connector portion now. Pre-Orders look to be on track to start shipping all next week. Thanks for everyone’s patience.





Just going to leave this little Easter egg right here. Happy Tuesday everyone!! All orders placed last week are going o...
08/11/2026

Just going to leave this little Easter egg right here. Happy Tuesday everyone!! All orders placed last week are going out, many went out yesterday and the rest should be out today and tomorrow. Thanks to everyone that stopped by our booth at Motor City Foxfest.

Address

15009 Manchester Road #259
Ballwin, MO
63011

Telephone

+13145263221

Website

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