1998–2005 GM 3100/3400 Tuned ECM Ready-to-run derby and off-road ECM — no core required.
This LMMF tuned ECM is built for 1998–2005 GM 3100 and 3400 V6 engines used in demolition derby, race, off-road, and simplified build applications. It is set up to remove factory limitations, simplify the system, and help keep your engine running wh...
Reviews
5.0
7 ratings
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If you’re building on a budget, and wanna have fun but still compete these things are great. Will for sure be buying more of these guys.
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William · August 5, 2026
Lmmf great company definitely will be buy more great customers service
Erick · July 28, 2026
Great customer service and tech support, product works amazing and make the build a breeze!