M8 Softail Tuners / Fuel Systems

What Is In This Collection

Engine management and fuel delivery for the M8 Softail - tuners, piggyback modules and replacement ECMs, fuel injectors and fuel rail kits, intake manifolds, oxygen sensors and their extensions, and forced-induction kits.

M8 Softail Fitment

M8 Softail covers '18-'26 - Street Bob, Fat Bob, Low Rider S and ST, Fat Boy, Heritage, Breakout, Sport Glide and Softail Slim. Every M8 is throttle-by-wire, so cable-throttle grips and controls do not apply.

Years that change what fits:

• 2018 - the M8 Softail replaced both the Twin Cam Softail and the Dyna on an all-new frame.

Worth knowing: FXDR and FXDRS are M8 Softails despite the FXD letters, FLXRST is the Low Rider ST and FLXRS the Low Rider S, and FLHC and FLSB are Softails rather than Touring bikes.

Why You Need One

A stock ECM is calibrated for the stock intake and exhaust. Open either one up and the mixture goes lean, which costs you the power you just paid for and runs the motor hotter than it should. Tuners come in two broad types: a piggyback that modifies the signal to the stock ECM, and a replacement ECM that takes over entirely. Auto-tune systems correct themselves as you ride using a wideband oxygen sensor; others need a map loaded or a dyno session.

More For Your M8 Softail

All M8 Softail Parts · M8 Softail Lighting & Turn Signals · M8 Softail Grips · M8 Softail Seats & Sissy Bars · M8 Softail Risers · M8 Softail Handlebars · M8 Softail Suspension & Front End Components · M8 Softail Hardware · M8 Softail Transmission / Clutch

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