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Thread: Weird Flat Spot, File Attached

  1. #1
    Tuner in Training
    Join Date
    Apr 2015
    Posts
    16

    Weird Flat Spot, File Attached

    Hey guys,
    for a while now i have noticed a flat spot when jabbing at the throttle, now that i have HP tuners and a wideband im trying to investigate further, it only happens when im running the car on E85, my injected LPG does not do it (the lpg ECU intercepts the regular E85 injector pulse and then modifies / calibrates it to suit the LPG)

    When this flat spot occurs the motor massively leans out then comes good,
    i thought it maybe injector data, i have bosch 42lb green top injectors, i have loaded in the data (Flow Rate vs KPA) i believe is correct (i think the old data i had was wrong). I have also been told by a few people with these injectors you generally only ever have to change that table and everything else should work fine.

    I can provide a log if need be aswell, but i wont be able to get one until the morning.
    I dont know if i should just dump fuel in the portion of the VE table where the leanout is occuring ? i dont think the VE table is the issue though.

    thanks in advance

    Cheers

    Dan
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