Results 1 to 3 of 3

Thread: No fuel tables Ford ecm

  1. #1
    Potential Tuner
    Join Date
    Jun 2023
    Location
    Panama City Beach
    Posts
    8

    No fuel tables Ford ecm

    I just finished building my motor and Im trying to change fuel tables. However, there is no base fuel I can change. After talking with hp support they said there are no parameters for base fuel and stoichiometrics.

    So am I just missing something here? Like is the ecm just using cold/warmup tables for everything?

    2010 f150 4.6 2v
    Green Oak 2368K, Ford OS: OKGD9A5

    Ill upload the tune when I get to my pc if anyone could help me out.

  2. #2
    Potential Tuner
    Join Date
    Oct 2023
    Posts
    1
    Im having the same issue/question
    2010 f150 4.6 3v 6r80
    Green Oak : 2368K
    Operating System : RXGE7C3

    I as well am rebuilding the motor at the moment and since I'm getting close to final assembly and it does have ford hot rod cams for 3v as well as other mods
    I decided to take a look at the file for it and noticed there's no main Fuel Base tables like original poster stated there is Fuel Base Cold tables but and they do run up to 210F and 0.8 load on my f150 file
    So i think it might work in the following ways but am here so that someone with more understanding can verify and/or correct my idea of how it works when not in Fuel Base Cold for partial throttle or does it stay/use in the Fuel Base Cold tables for partial throttle as well?
    I think this is very unlikely but maybe someone with more experienced can let us know as I'm kind of a novice in tuning?

    #1 maybe they just don't show the fuel base table but its running in the background if so why not present it maybe a difficult software issue that causes weird issues and/or its an f150 so its not worth their time witch i get but do hope it can be addressed

    #2 I noticed there's an extra Power Enrich under the Fuel tab there are a few extra table's on my file its these under Fuel -->Power Enrich-->Throttle i have a Fuel Enrichment Pedal table that uses Throttle POS as units/values and Engine Speed (RPM) as row axis all throttle pos values in the table are oe set to 90% POS AKA (WOT)
    After that there's Power Enrichment under that there's 2 tables in order from top to bottom it goes WOT Lambda table and then there's WOT Lambda FFV the

    1WOT Lambda is a table containing target A/F ratio Units/Values and at row axis is Engine Speed (RPM) range Values so i only assume this is like a fuel base table for WOT that
    gets active after the Throttle POS---> Fuel Enrich Pedal table reaches (and/or other throttle settings that specify WOT within entire file) what WOT is considered [Then this table
    activates as a WOT fuel base we can control?] AND then there's a

    2WOT Lambda FFV witch hase some irrational values for RPM on row and some commanded A/F Ratio Units/Values this is like an else if (elif) table for ethanol exactly like the
    WOT Lambda but on mine its turned off and flex fuel is Disabled at the switch and the table witch can be switched to on and changing the values from irrational to rational ones

    So is (WOT Lambda)this our fuel base controller under WOT on these f150 pcm's and my main question is what tables are for partial throttle are they in the background working but not made an option to mess with or does it use some other way to figure out its Desired A/F Ratio other than the Stoichiometry number unit/value under Fuel --> General --> Stoichiometry --> Stoich AFR

    So obviously there's a way to control the desired AFR at WOT but what if i want a more responsive feel and/or have more air coming in down low in the partial throttle % area now than previously did before a certain mod and i want bit more fuel after tuning the MAF Airflow VS voltage table
    will just rescaling the MAF curve work enough to compensate the fuel for the extra air coming (Probably)but even after that if i wanted it to be a bit richer down low in partial throttle ?
    Is it something that's just not possible like it is in the Hardware : Spanish Oak 1024K, ECM, Ford Operating System : FBJR3G5 2005 mustang GT 4.6 3v in Fuel Base table i know there's other stuff
    I can do like turning up the fuel pump voltage i believe or messing with the Fuel --> General --> Stoichiometry --> Stoich AFR value but that's not the way i learned to do it on the 4.6 3v in the s197
    All i use Stoichiometry --> Stoich AFR value for in the s197 is to adjust for the 10% ethanol in most fuels in usa or when i add some more but i dont use in the way mentioned before,
    Would that work in the f150 to trick/Command the partial throttle A/F Ratios to change into a desired richer A/F Ratio without other weird issues or what kind of issues should i expect if i tried enriching the AFR this way i know i would have to calculate/notice the difference to adjust the WOT Lambda <--- Power Enrichment because when you do this it Kinda throws off the calculations somehow of what the actual number it's calling for in an AFR unit commanded table's
    Example is if you set the value of the Stoichiometry --> Stoich AFR to 14.1 from 14.6 and your using regular 91or93 aka premium with 0% ethanol the values in Fuel Base Cold at 14.6 AFR wont be accurate any more they'll command a richer afr than the number present because of the .5 difference that we change in Stoichiometry --> Stoich AFR value itll work like a multiplier
    Example : @93 Premium 0%ethanol Stoichiometry --> Stoich AFR @ 14.6 and the fuel base cold @ 0.1 load @70F ECT itll command a unit of 14.6 and in a perfect world with perfect tune itll be actual 14.6 @ AFR gauge but in next
    Example : @ 93 Premium 0%ethanol Stoichiometry --> Stoich AFR @ 14.1 and the fuel base cold @ 0.1 load @70f ECT it'll have a unit number of 14.6 AFR to command but it'll actually command around 14.1 and im guesstimating so it wont be accurate but richer for sure it would probably with everything else in order in the tune be a reading of around 14.1 @ the AFR gauge
    So i Believe it will have this effect and hope it will have a bit richer commanded AFR in partial throttle as well its effect of richer fuel would also have an effect on WOT Lambda table and the Fuel Base Cold table so they would have to be adjusted appropriately or else might be too rich for what you want good thing is they did make the Power Enrich tab with its tables within it AVAILABLE!!!
    So knowing it throws off the fuel this way if you tweak the Stoichiometry --> Stoich AFR value what other weird issues will it cause will it cause weird shifting issues? , will it throw off other important calculations or something else odd i cant remember or just don't know in a positive or negative way?

    Honestly tho you could just tune it just fine with out doing all this and just mess under the Fuel --> Power Enrich tab table's for power and just use WOT for pulls , rips or hits and hopefully and probably with MAF vs Voltage curve adjusted properly will make it a nice daily driver with target oe AFR and some power behind WOT after all they are f150 trucks and im all for cool trucks but they're not sport cars so maybe thats why hp tuners didnt feel it was important to implement a fuel base table like in the s197 they weren't concerned for best throttle response as its a truck or maybe its how the PCM works from ford and its as reasonable as it allowed them to make it
    also it is a 2010 so idk when they stared putting the 5.0 into this f150 but im guessing around 2011 same as the s197?
    So at hp tuners they probably started to put more work/attention to the 5.0 as its newer and they pay attention to newer cars that will yield them a better market for the product to grow Smart!!


    So if anyone read this far thx for the attention and i would appreciate any responses from anyone positive or negative
    PLEASE leave an explanation if you could of why something i mentioned is incorrect or correct maybe if i left out something valuable to the subject
    Thx

    I will be installing the motor soon and then mess with the tune
    so ill be back with results on what did what ill probably do some regular stuff first for the break in period and then after ill try enrichening the partial throttle hopefully someone else responds with some more info so i can know a bit more of what to expect

  3. #3
    bump on the green oak