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Thread: A/F adjustment needed??

  1. #1
    Join Date
    Dec 2005
    Location
    Kelowna B.C. Canada
    Age
    44
    Posts
    266

    A/F adjustment needed??

    I know I know another Air fuel ratio thread but just curious if it's worth playing with after tune and JLT CAI. I have DR tune (AMAZING) and JLT CAI again best purchases I've ever made for the car...have Flowmasters and res delete tips.I have no access to Dyno and i am no where near Known Marauder specialists...ANYWAY is it worth adjusting A/F to try and get a little more...or is it just a waste of time for 1hp and possible engine damage...so many threads so many different answers.....help
    Thanx

    P.S. no drivability problems just getting power hungry

  2. #2
    Join Date
    Jan 2006
    Location
    Central Ohio
    Posts
    6,218
    Give Dennis a call, and ask him

    1-604-276-5003

    KillJoy

  3. #3
    Join Date
    Nov 2002
    Location
    St. John, IN
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    Posts
    14,251
    That # is 904-276-5003

  4. #4
    Join Date
    Apr 2005
    Location
    The Pitt, PA
    Age
    52
    Posts
    7,021
    Dennis is usually VERY helpful with tunes.

    You can, however, help yourself. Download Extreme Tune from SCT. This will allow you to richen or lean your mixture, adjust timing, adjust shift points etc.

    Making these adjustments on your own is not for the faint of heart and will require trial and error to meet your preferences. You'll have to start by asking DR to email you a base tune.

    Further, while one gains tons of adjustability, loading a tune into the Xcal from Extreme Tune will remove the on-screen adjustable parameters from the Xcal, so you'll have to refer to your PC for future tuning.

    My experience: I ran DR's base tune lean by 4% with absolutely no issues. A few folks down here in SFL, have run his tune ALL THE WAY LEAN at the track without issue, notably on a 100K mile motor.

    Of course YMMV, but that's the best I can tell ya!
    Magindat: (majin-dat) Imagine That.
    2013 Ford Taurus SHO

    Lemonade - living with Fruit Punch - in Blackmobile's Garage...
    FIT Procharger Kit #31 - 3.7 pulley - 9 PSI
    World's first BLOW THRU ProCharged Marauder - Reinhart Tuned

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    boi

  5. #5
    Join Date
    Jan 2004
    Location
    Kansas City
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    55
    Posts
    2,008
    If you don't have access to a dyno at least buy a stand-alone wideband to verify any adjustments on your own.
    Currently Marauderless but looking

  6. #6
    Join Date
    Apr 2005
    Location
    Frederick County, MD
    Posts
    510
    ^ +1

    Don't mess with A/F ratio w/o a wideband o2 handy
    -My Homepage and Panther tech-

    My Mint 96' Mercury Grand Marquis Supercharged LSE -
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    Click My Merc for more Pics!

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