Cobalt Cycles Dyno Sheets

We tune all carbureted and fuel injected Harley Davidson models on a DynoJet 250iX dynamometer. We work with DynoJet Power Vision, Impact Wiring Solutions, TTS Master Tune, Screamin Eagle Race and Street Tuner, as well as all Daytona Twin Tec products. We also offer break in services for many new engine builds! Pre-Twin Cam ignition systems with mechanical advance are also custom tuned with various spring rates, custom weights, and custom pins to control advance slope and total advance. All carbureted models with adjustable electronic ignition systems can be tuned with custom advance slopes to match the build needs.


1966-1984 Shovelhead

1984-2000 Evolution

1999-2006 Twin Cam

  • COMING SOON

2007-2017 Twin Cam

  • 2007 Harley Davidson FLSTSC 96" - SE Stage I Air/C, Bassani FireSweep 2:2 Exh. Tuned w/Dyno Jet Power Vision
  • 2007 Harley Davidson FXD 110" - S&S 89cc Super Stock Heads, HPI 58mm TB, Feuling 6.2 Inj, Feuling BA A/C, Feuling 574, Custom 2:2 Exh. Tuned w/Dyno Jet Power Vision
  • 2008 Harley Davidson FLHTC 107" - Feuling 6.2 g/s Inj, S&S 585, SE Stg I A/C, Bassani Road Rage III Mid Length 2:1 Exh. Tuned w/Dyno Jet Power Vision
  • 2011 Harley Davidson FLHR 107" - 10.8:1, SE Stg I A/C, Feuling 6.2 Inj, S&S 585, SPC 2:1 Shorty Exh. Tuned w/Dyno Jet Power Vision
  • 2014 Harley Davidson FLHXS 103" - Ness Inverted Big Sucker, Andrews 54H, Feuling 6.2 Inj, V&H Power Duals w/SVT Boneshaker Mufflers. Tuned w/Dyno Jet Power Vision
  • 2016 Harley Davidson FLHTK 124" - Branch Heads, HPI 58mm TB, Ness Inverted Big Sucker, Feuling 574, S&S Sidewinder 2:1 Exh, Baker DD7 Trans (Initial Calibration). Tuned w/Dyno Jet Power Vision
  • 2016 Harley Davidson FLHTK 124" - Branch Heads, HPI 58mm TB, Ness Inverted Big Sucker, Feuling 574, SS Sidewinder 2:1 Exh, Baker DD7 Trans (Final Calibration). Tuned w/Dyno Jet Power Vision

2017-2025 Milwaukee 8 Gen 1

  • 2017 Harley Davidson FLHTKSE 128" - S&S 55mm CNC Intake, Feuling 6.1 Inj, SE Heavy Breather, Woods WM8-77X, Decatted Factory Head Pipe w/Khrome Werks 4.5" HP Plus Mufflers w/o Baffles. Tuned w/Dyno Jet Power Vision
  • 2017 Harley Davidson FLTRU 132" - 11.25:1, SE Heads ported by T&T Cycles, SE 64mm TB, Feuling 7.6 g/s Inj, Decatted head pipe w/S&S MK45 Mufflers. Tuned w/Dyno Jet Power Vision
  • 2017 Harley Davidson FLTRXS 124" - 10.8:1, T-Man +1 Heads, SE 64mm TB, Feuling 6.1 Inj, Feuling BA A/C, Khrome Werks Dominator Dual Exh w/Louvered Baffles. Tuned w/Dyno Jet Power Vision
  • 2017 Harley Davidson FLTRXS 129" - SE Stg IV Heads, S&S 550, SE 64mm TB, FM 6.2 Inj, FM A/C, D&D Bobcat 2:1 exh. Tuned w/Dyno Jet Power Vision
  • 2017 Harley Davidson FLTRXS 129" - 10.8:1, T-Man +1 Heads, SE 64mm TB, Feuling 7.6 Inj, Feuling BA A/C, Khrome Werks Dominator Dual Exh w/Louvered Baffles. Tuned w/Dyno Jet Power Vision
  • 2017 Harley Davidson FLTRXS 129" - 11.1:1 w/Stock Heads, SE 64mm TB ported by ADHD Cycles, Feuling 7.6 Inj, Feuling BA A/C, Feuling 487, Twisted Fab 2:1 Shorty Exh, Trask 25/54 Chain Drive. Tuned w/Dyno Jet Power Vision
  • 2019 Harley Davidson FLTRXS 128" - S&S 55mm Cast Intake ported by Cobalt Cycles, Feuling 6.1 Inj, Ness Big Sucker, Feuling 521, Bassani Road Rage III 2:1 Mid Length Exh. Tuned w/Dyno Jet Power Vision
  • 2019 Harley Davidson FLTRXS 128" - VTP 68mm Int Man, SE 68mm TB, Feuling 7.6 Inj, Feuling 68/70 BA A/C, Feuling 521 Cam, Bassani Road Rage III Mid Length Exh. Tuned w/Dyno Jet Power Vision
  • 2019 Harley Davidson FXLR 107" - Mackie 478, Shifter Crew A/C, Twisted Fab 2:1 Exh. Tuned w/Dyno Jet Power Vision
  • 2020 Harley Davidson FLTRXS 120" - SE CNC Heads, S&S 55mm Cast Intake ported by Cobalt Cycles, Feuling 6.1 Inj, HPI V2 A/C, TTS 175, Bassani Competition 2:1 Exh. Tuned w/Dyno Jet Power Vision
  • 2021 Harley Davidson FLTRXS w/RDRS 114"- S&S 55mm CNC Intake, Feuling BA A/C, Feuling 487, Decatted head pipe w/Khrome Werks Slip-Ons w/Louvered inserts. Tuned w/Dyno Jet Power Vision
  • 2021 Harley Davidson FLTRXS w/RDRS 132" - 10.8:1, FM AX Heads, VTP 65mm TB, FM 6.8 Inj, S&S Stinger A/C, FM 2-1-2 Header w/Moonshine HP 4" Slip-Ons. Tuned w/Dyno Jet Power Vision
  • 2022 Harley Davidson FLHCS 114" - S&S 55mm CNC Intake, Feuling 6.1 Inj, Ventilator A/C, Star 30/30 , Tab Performance Slip-Ons w/Zombie Baffles. Tuned w/Dyno Jet Power Vision
  • 2022 Harley Davidson FLHTK w/RDRS 114" - Woods 22XD, S&S Stinger A/C, Fab 28 Bagger Full Length 2:1 Exh. Tuned w/Dyno Jet Power Vision
  • 2022 Harley Davidson FLHTK w/RDRS 114" - S&S 55mm Cast Intake ported by Cobalt Cycles, Feuling 6.1 Inj, Feuling RS BA A/C, Woods 22XE, Fab 28 Bagger Full Length 2:1 Exh modified by ADHD Cycles. Tuned w/Dyno Jet Power Vision
  • 2022 Harley Davidson FLTRXS w/RDRS 114" - S&S 55mm CNC Intake, Feuling 6.1 Inj, Feuling BA A/C, CR483, Khrome Werks Outlaw 2:1 Exh. Tuned w/Dyno Jet Power Vision
  • 2022 Harley Davidson FXLRST 117" - S&S 55mm CNC Intake, Feuling 6.1 Inj, S&S Stinger A/C, Feuling 472, Stealth 2:1 Exh. Tuned w/Dyno Jet Power Vision
  • 2022 Harley Davidson FXRST 117" - SE 64mm TB, Feuling 6.1 Inj, S&S Stealth A/C, Woods 22XD, Thrashin Supply 2:1 AR Exh. Tuned w/Dyno Jet Power Vision
  • 2023 Harley Davidson FXLRST 117" w/RDRS - S&S 55mm CNC Intake, Feuling 6.1 Inj, Feuling BA A/C, Feuling 487, V&H Supersport 2:1 Exh w/o PCX Cat. Tuned w/Dyno Jet Power Vision
  • 2024 Harley Davidson FXLRST w/RDRS 117" - S&S 55mm CNC Intake, Feuling 6.1 Inj, S&S Stinger A/C, S&S 475, Blockhead 2:1 Exh. Tuned w/Dyno Jet Power Vision

2023-2025 Milwaukee 8 Gen 2