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Thread: 2.2 LAP ECOTEC general info

  1. #1
    Potential Tuner
    Join Date
    Feb 2018
    Mankato Mn

    2.2 LAP ECOTEC general info

    Hi, I have a 2010 chevy cobalt with the 2.2 lap ecotec, I am just looking for some general info on the motor, like stock injector size at the moment, i am wanting to do an e-85/ flex fuel tune, i did enable the flex fuel option in the pcm, when i run the vcm scanner i do get a ethonal precentage read back, but car has a hell of a time cold starting here in minnesota when the temps dip below 20, i just fill the tank half way when i am playing with e85, other wise i genrealy run on e15-e30 and the care loves it
    Last edited by gearhead105; 02-10-2018 at 02:44 PM.

  2. #2
    Tuning Addict 5FDP's Avatar
    Join Date
    May 2012
    Rogers, MN
    Just click the injector flow rate table to figure out injector size. Though you do need to know what they run for factory fuel pressure, either 43.5 or 58psi.

    A random 2.2 file I looked at in the repository says like 27lb/hr at 408kpa (58psi).

    I feel a problem with what you are doing is that you are did not change the stoich table for the fuel you are running. So if it's still stock at 14.7 for 0-100% alcohol content you are going to run into starting problems. Also I do not know that platform very well but do they have a factory install flex fuel sensor to read alcohol content?
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.