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MSD Ignition 2-Step Launch Master RPM Controller Ford 4.6L Mod Motor


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2-Step Launch Master RPM Controller Ford 4.6L Mod Motor
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2-Step Launch Master RPM Controller
  • Ford 4.6L Mod Motor
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    8734 - MSD Late Model RPM Controllers is rated 4.2 out of 5 by 5.
    Rated 5 out of 5 by from MSD 2-step for modular ford 4.6 auto. installed after reading instructions carefully, install was fairly easy other than routing wires to brake light switch and off/on switch which I use for burnouts at strip. I connected blue/white wire to green wire on brake light. Product works very well in my 2007 Mustang GT which has 3.73 gears & TCI 3000 Stall converter, car leaves very strong but you will need drag radials ,I have M/T street radials. I bracket race this car & have not had enough time in car to determine consistency & dial in a R/T This product seems work very well
    Date published: 2016-06-23
    Rated 5 out of 5 by from Works great, straight forward install.. 2002 Mustang GT perfect fit. install wasn't bad. one of the lines takes patience to get off but easy enough. Only complaint was LED on unit. Instructions indicate hook up and if it lights you are good otherwise reverse wiring. It lit up but didn't work, reversed wiring and was good to go.
    Date published: 2016-05-10
    Rated 5 out of 5 by from Good Quality Easy to install it is straight forward and easy to fallow directions I hooked it to the trans break instead of the clutch. have not been able to test it yet. but very satisfied as of now
    Date published: 2016-02-17
    Rated 5 out of 5 by from Works on the street.....time for the track! All of the underhood install was a snap, however finding the correct clutch wire was not.....no real info given there so it was a trial and error on my end.....Note: use white wire from clutch harness/switch located high above clutch pedal, not wires from lower clutch harness/switch
    Date published: 2015-06-04
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    Will this fit on a 2009 Ford Crown Victoria 4.6?

    Asked by: ChrisB
    Msd 121-8734 should fit a 09 crown vic 4.6l
    Answered by: langus
    Date published: 2022-10-20

    This fit in 05 Mustang 4.0 V6? If not, whats correct model I can use?

    Asked by: MNassar
    MSD does not offer a 2 step for the V6 Mustang. THey do have the universal kit for use with the 6AL box. https://www.jegs.com/i/MSD-Ignition/121/8739/10002/-1
    Answered by: Rusty B
    Date published: 2018-06-11

    Will this fit the 1997 Cobra

    Asked by: Topnotch
    No, this is made to work with 99 and later applications.
    Answered by: Rusty B
    Date published: 2018-04-05

    Would this fit a 2001 ford lightning?

    Asked by: Sapo17
    No, this is made for the 4.6L engine.
    Answered by: Rusty B
    Date published: 2020-10-19
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